Cover of the hatch of the ship layered |
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IPC classes for russian patent Cover of the hatch of the ship layered (RU 2143367):
                   
 Cover of the hatch of the ship / 2143366
The invention relates to shipbuilding and can be used in the hull structures, ship superstructures, etc
 The device priotkryvaya hatch / 2083429
 Lugovoe closing / 2028245
 Lugovoe closure of the vessel / 2020107
The invention relates to the field of shipbuilding, and specifically to the design of hatch covers vessels
 Device for cracking-open access hatch cover / 2268191
Proposed device includes swivel member articulated on cover coaming and engageable with twin brackets secured on cover by means of clamps. Swivel member is made in form of cylindrical body filled with heat-transfer fluid and provided with movable rod with drive made in form of bellows from memorized-shape effect material.
 Shipboard hydraulic drive / 2299829
Proposed hydraulic drive has common hydraulic power supply system, hydraulic distributor, double-acting hydraulic cylinder connected to it and interlocking valve whose inlet is connected with one of working chambers of hydraulic cylinder and outlet is connected with user. Hydraulic drive is provided with bypass controllable valve made in form of hydraulic lock with piston chamber, rod chamber and valve chamber. Piston chamber is hydraulically connected in parallel with hydraulic distributor and other working chamber of hydraulic cylinder; rod chamber is connected with return line of hydraulic system and valve chamber is connected with interlocking valve outlet; it is made for parallel hydraulic connection with user. Besides that, hydraulic drive is provided with throttle valve mounted for hydraulic connection with valve chamber of bypass controllable valve and in parallel with interlocking valve outlet on side of inlet and for connection with user on side of outlet.
 Hatch cover opening device / 2317224
Invention relates to devices for opening of hatches closed by sliding shields or covers. Proposed device placed between pressure and outer hulls of underwater craft has shield installed on hatch of outer hull, signaling device pipeline, hydraulic cylinder with union and movable rod and articulated lever. Foundation is rigidly installed on outer hull with fitted-on bottle filled with working medium and hydraulic cylinder with union, which are interconnected by pipeline. Bottle with working medium is connected with engagement line by diaphragm. Movable rod of hydraulic cylinder is telescopic, and it is connected with articulated lever by means of guide bracket connected with shield which is also provided with central and side brackets with fitted-on runners to provide movement in guides secured on outer hull and made in form of profile following outlet of outer hull. Shield is installed on support foundation secured on outer hull and is provided with brake buffer made, for instance, of rubber-cord material.
 Access hatchway cover opening device / 2340509
Proposed device comprises a pair of brackets arranged on the cover and on hatch coaming and a rotary element pivoted in the coaming bracket grooves and locked to prevent axial shift, the said rotary element representing a lead screw with a square-section tail. The screw threaded part supports a nut-pivot arranged in a case with journals and clamps interacting with the aforesaid brackets grooves. The leas screw tail supports a globoidal gear wheel interacting with the screw, both being arranged in a casing. A lever with pedal is arranged on the aforesaid globoidal gear screw tail to rotate in one direction. The said globoidal gear casing is linked with the rotary element nut-pivot.
 Hydraulic drive for hatch covers / 2364542
Invention relates to ship building, particularly to hydraulic drive of hatch covers. Proposed hydraulic drive comprises at least two hinged-together sections, actuating double-acting hydraulic cylinders, three-position hydraulic control valves and pump station. The latter communicates, via the first three-position hydraulic control valve, pressure and drain lines, with rod and head ends of actuating hydraulic cylinders. Each of the latter is pivoted to the base and drive section hinged to the base to turn in vertical plane. Driven section end part has rolls for them to roll over the hatch coaming guides. Pressure lines communicates with actuating hydraulic cylinder head ends via the second three-position hydraulic control valve or via two-way hydraulic lock and flow rate regulator with return valve, or via two-way hydraulic lock. Hydraulic drive comprises hydraulic cylinder of hitch cover with its housing attached to the drive section, while its rod interacts with the driven section. Head and rod ends of hydraulic cylinder communicate, via appropriate hydraulic lines, head and rod ends of actuating hydraulic cylinders. Head end of hatch cover hydraulic cylinder can communicate with rod ends of actuating cylinders via additional yawing throttle with adjustable check valve.
 Device for lid closing and successive opening / 2457161
Invention relates to space technology, namely to devices providing opening or closing entry to sealed cubicles of space vehicles. Device for lid closing and successive opening contains installed on lid drive with attached to the lid handle, locks as well as lid-removing mechanism fixed on mating ring. One part of each of locks is mounted on lid and the second part made as engagement member is installed on mating ring of hatch. The first parts of locks are fixed along lid periphery each one of which is made as cam shaft with gripper hook. Cam shafts are interconnected with each other and drive by n+1 gimbal gears. Gripper hooks are interacting with corresponding engagement members on mating ring
 Hatchway cover / 2557576
Hatchway cover contains lid along the perimeter of which vertical projection is made. The lid is made capable to be accommodated in hatchway opening along the perimeter of which sealing element is performed which element contains bead provided with seal made of resilient material. The seal is made with possibility to contact with lid vertical projection. Locking mechanism includes horizontal planks rigidly secured with lid along its perimeter. The planks are made capable to be located in deck niches made along perimeter of hatchway opening. Fixing element is made as cam rigidly secured with horizontal shaft and provided with opening for lever fixation. Niche wall distant from hatchway opening makes obtuse angle with its bottom. Vertical walls of the niche are provided with planks rigidly secured with its walls. The planks are provided with slits opened to inclined wall of niche. The lid is provided with retainers located above horizontal planks and made capable to contact with corresponding fixing element.
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(57) Abstract: The invention relates to shipbuilding and can be used in ship hull structures, superstructures, etc., Layered cover of the hatch of the vessel cross-section contains at least two layers. At least on the border of the front and/or back sides of at least one layer and/or at least one of the vertices of at least one of the layers of the cross section along at least part of the boundary line section is made in the form of a fragment and/or combinations of fragments oblique conical section of a right circular cone. Angle of at least one vertex of at least one of the layers of the cross section may be less than 180o. At least one of the layers can have a variable thickness. The thickness of the at least one of the layers increases in a direction from one end section to the other. It can increase or decrease from the inner part of the cross section along at least one edge. The thickness of the at least one layer can significantly increase or decrease or change repeatedly and periodically. On the length of the boundary line at least one side of at least one of the layers may be convex or concave otnositel bending and/or ACC with multiple changes concavity, including the opposite. On part of the length of this line can be performed with at least one protrusion or at least one recess. At least one of the layers may be metal. The technical result of the invention is the improvement of operational properties of layered cover of the hatch of the ship. 23 C.p. f-crystals, 21 ill. The technical fieldThe invention relates to the field of shipbuilding and can be used in the construction of hull, superstructures, etc. Art Similar to the proposed device can be considered: 1. Sandwich panel for shipbuilding. C. the USSR N 464477 op. 25.3.75, MCI B 63 B 3/00) containing a cross-section of at least two layers and the boundaries of the front and back sides. The disadvantages are the counterpart: A. No constructive pledged directional strength properties under conditions of vibration and the inability to localize and prevent crack formation in periodic and/or alternating loads, which greatly aggravates the design of hatch covers ship layered. When designing structures, generally known future scheme of loading hatch of the ship layered, i.e., by the known parameters of the characteristic part of the structure of the vessel, contains the hatch. Creating ravnopolochny design of hatch covers in all directions in this situation is unsustainable, heavier hatch and in General part of the design of the vessel containing the hatch. B. the Lack of constructive pledged natural frequencies of the structure of the vessel containing the hatch. The creation part of the design of the vessel containing the hatch with the same thickness along the length of the hatch cover section (boundary section in the form of straight lines) does not structurally incorporated the natural frequency of the structure of the vessel. The execution of a design different from equal length sections of the hatch covers will allow you to avoid resonance phenomena part of the design of the vessel containing the hatch. C. Low reliability determine the manufacturer of the hatch of the vessel due to the lack on its surface (for example, the boundaries of the cross-section) of a manufacturer ID and the location of the hatch in the design of the vessel. Currently used to label products are short-lived, and branding lead to weakening of the structure of the hatch cover, the appearance on it of zones with concentrators of stresses and microcracks. edificator manufacturer, extremely difficult the process of finding the manufacturer and eliminate the cause of a malfunction. The closest in technical essence a prototype of the proposed device is "the body of the container.with. USSR N 680940 op. in 25.8.79, MCI B 63 B 3/13) containing a cross-section of at least two layers and boundaries of the front and back sides. The disadvantages of the prototype are: A. No constructive pledged directional strength properties under conditions of vibration and the inability to localize and prevent crack formation in periodic and/or alternating loads that greater weight design of hatch covers ship layered. When designing structures, generally known future scheme of loading hatch of the ship layered, i.e. on known parameters of loading last may, including computational methods, to determine the strength and stiffness characteristics of the structure of the vessel containing the hatch. Creating ravnopolochny design of hatch covers in all directions in this situation is unsustainable, heavier hatch and in General part of the design of the vessel containing the hatch. B. The Lack Of The>/P>The creation part of the design of the vessel containing the hatch with the same thickness along the length of the hatch cover section (boundary section in the form of straight lines) does not structurally incorporated the natural frequency of the structure of the vessel. The execution of a design different from equal length sections of the hatch covers will allow you to avoid resonance phenomena part of the design of the vessel containing the hatch. C. Low reliability determine the manufacturer of the hatch of the vessel due to the lack on its surface (for example the boundaries of the cross-section) of a manufacturer ID and the location of the hatch in the design of the vessel. Currently used to label products are short-lived, and branding lead to weakening of the structure of the hatch cover, the appearance on it of zones with concentrators of stresses and microcracks. When failure of at least part of a design or accident through the fault of the hatch cover, no case ID manufacturer, it is difficult to locate the manufacturer and eliminate the cause of a malfunction. To improve the reliability determine the manufacturer of the hatch of the ship layered part of the boundary line of the priest is considered as a circular cone, i.e., line segment, which forms a surface of a right circular cone and the clipping plane not passing through its vertex. To identify a particular manufacturer it does not matter the particular special case of this line, i.e., the ellipse is, hyperbola or parabola. The invention The objective of the invention is to provide a cover of the hatch of the ship layered, providing constructive pledged direction strength properties under conditions of vibration and containment and prevention of crack formation in periodic and/or alternating loads; structurally incorporated the natural frequency of the structure of the vessel containing the sunroof, high reliability determine the manufacturer of the hatch of the ship by making its body (for example, the boundaries of the cross-section) with the vendor ID and location of the hatch in the design of the vessel. These technical results of the invention are achieved by the fact that the cover of the hatch of the vessel contains a cross-section of at least two layers, and at least on the border of the front and/or back side of at least one of the layers, and/or at least one of the vertices of at least about and fragments oblique conic sections of a right circular cone. It provides: A. Constructive pledged direction strength properties under conditions of vibration and containment and prevention of crack formation in periodic and/or alternating loads. When designing structures, generally known future scheme and parameters of the loading hatch of the ship layered. Creating ravnopolochny design of the cover of the hatch of the ship layered in all directions in this situation is unsustainable, the weight of the hatch cover and overall design of the ship. To set the hatch of a vessel required strength properties at a known schema and loading parameters of the design is formed constructive inception directional strength properties (hardness and elastic compliance) hatch of the ship layered. I.e. manhole cover is made of a vessel with a defined longitudinal section. B. Constructive pledged natural frequency part of the design of the vessel containing the hatch. To set the hatch of the vessel with the required frequency of oscillations of the manhole cover is made of a vessel with a defined cross-section. Century Increased to the cross-section) of a manufacturer ID. Currently used to label products are short-lived, and branding lead to changes in the strength characteristics of the design of the hatch of the ship, the appearance on it of zones with concentrators of stresses and microcracks. When failure of at least part of a design or accident through the fault of the hatch cover, no case of vendor ID, extremely difficult process of finding the manufacturer and eliminate the cause of a malfunction. To improve the reliability determine the manufacturer of the hatch of the ship layered part of the boundary line of the cross-section may be in the form of a fragment or combination of fragments oblique conic sections of a right circular cone, i.e., line segment, which forms a surface of a right circular cone and the clipping plane not passing through its vertex. Moreover, to identify a particular manufacturer it does not matter the particular special case of this line, i.e., the ellipse is, hyperbola or parabola. So, for example, to identify one of the manufacturers can be selected the first quarter section line, and the second quarter - to identify other manufacturer. In addition, depending on concretely. Any curves, United by the concept of "conic section", is uniquely identified using known mathematical methods [1-5]. The proposed IDs favorably used in the present labeling and marking due to the simplicity of their measurement known metrological methods and unambiguous recognition of their well-known mathematical methods. Marking on the products are short-lived, and branding lead to weakening of the structure of the hatch of the ship layered, the appearance on it of zones with concentrators of stresses and microcracks. When failure of at least part of a design or accident through the fault of the hatch cover, no case of vendor ID, extremely difficult process of finding the manufacturer and eliminate the cause of a malfunction. It should be noted that currently widespread identification product labels with barcodes, symbolic, numeric, alphanumeric codes, and sensor IDs, made in the form of oscillatory LC-circuits. The combination of the code of letters, numbers, and frequency settings LC-circuit is ID and uniquely identifies the object in the days before Russia: N 2045780, MCI G 06 K 11/00, op. 10.10.95,; N 2074696, MKI A 61 H 39/00, op. 10.03.97,; N 2102246, MCI B 42 D 15/00, op. 20.01.98,; N 2106689, MCI G 06 K 17/00, op. 10.03.98,; N 2112958, MCI G 01 N 21/64, op. 10.06.98,, and in descriptions to certificate of utility model: N 0005883, MCI G 09 F 3/02, op. 16.01.98,; N 0006461, MCI G 09 F 3/02, op. 16.04.98, However, the use of the above inventions for identification produced cover of the hatch of the ship layered due to the nature of the latter is impractical and inefficient. Thus, the goal of the invention is achieved. In the process of developing materials of the invention and, in particular, the technical result and the independent claim. The applicant has carried out the assessment of novelty of the invention according to the General principles and the assessment of inventive step according to the General principles, as well as "negative" and "positive" rules using the Rules of drafting, filing and examination of an application for the grant of a patent on the invention (20 September 1993) and Guidelines on the examination of applications for inventions and utility models (2nd Edition, 1997). The analysis of the prior art showed that the claimed combination with the accordance to the criterion of "novelty." To check the compliance of the claimed invention, the criterion of "inventive step" conducted an additional search of known technical solutions in order to identify characteristics that match the distinctive features of the prototype of the characteristics of the claimed technical solution. Found that the claimed technical solution is not obvious from the prior art. Not identified solutions that have the signs consistent with the distinctive features of the invention, and is not confirmed by the popularity of the influence of distinctive features on the specified set of technical results. Therefore, the claimed invention meets the criterion of "inventive step". Manhole cover layered vessel may contain a cross section of part of the boundary line of the front side of at least one of the layers is made in the form of a fragment and/or combinations of fragments oblique conic sections of a right circular cone (fragment hyperbola, parabola, ellipse), and fragments oblique conic sections of a right circular cone can degenerate into each other, providing smooth contours of the cap in the design of the vessel. Provided constructive pledged upraviteljskih and/or alternating loads; structurally incorporated natural frequency part of the design of the vessel containing the hatch; increased reliability determine the manufacturer of the hatch of the ship by making its body with the vendor ID and location of the hatch in the design of the vessel. Manhole cover layered vessel may contain a cross section of part of the boundary line of the back side of at least one of the layers is made in the form of a fragment and/or combinations of fragments oblique conic sections of a right circular cone (fragment hyperbola, parabola, ellipse), and fragments oblique conic sections of a right circular cone can degenerate into each other, providing smooth contours of the cap in the design of the vessel. Provided constructive pledged direction strength properties under conditions of vibration and containment and prevention of crack formation in periodic and/or alternating loads; structurally incorporated natural frequency part of the design of the vessel containing the hatch; increased reliability determine the manufacturer of the hatch of the ship by making its body with the vendor ID and location of the hatch in Eunice peaks at least one of the layers, made in the form of a fragment and/or combinations of fragments oblique conic sections of a right circular cone (fragment hyperbola, parabola, ellipse), and fragments oblique conic sections of a right circular cone can degenerate into each other, providing smooth contours of the cap in the design of the vessel. Provided constructive pledged direction strength properties under conditions of vibration and containment and prevention of crack formation in periodic and/or alternating loads; structurally incorporated natural frequency part of the design of the vessel containing the hatch; increased reliability determine the manufacturer of the hatch of the ship by making its body with the vendor ID and location of the hatch in the design of the vessel. The combination of the elements of the cross-section of a cover of the hatch of the ship layered in the form of fragments oblique conic sections of a right circular cone, (fragments of the hyperbola, parabola, ellipse), which can degenerate into each other in the process of molding operations ensures the achievement of a rational form of the final product. This provides structurally laid on the periodic and/or alternating loads; structurally incorporated natural frequency part of the design of the vessel containing the hatch; increased reliability determine the manufacturer of the hatch of the ship by making its body with the vendor ID and location of the hatch in the design of the vessel. Manhole cover layered vessel can be performed with the formation of an angle of at least one of the vertices of the cross section of at least one of the layers of the cross section is less than 180othat will improve the manufacturability of the Assembly structure containing the hatch. Manhole cover layered vessel can be performed with at least one layer of variable thickness that will provide constructive pledged changing the thickness of the hatch of the ship. Cover of the hatch of the ship layered can be made with a thickness of at least one of the layers, increasing in the direction from one edge of the section to another, which will provide constructive pledged changing the thickness of the hatch of the ship. Cover of the hatch of the ship layered can be made with a thickness of at least one of the layers, increasing in the direction from the inner part of the cross section along at least one edge that will allow is to be made with a thickness of at least one of the layers, decreases in the direction from the inner part of the cross section along at least one edge that will allow for constructive pledged changing the thickness of the hatch of the ship. Cover of the hatch of the ship layered can be made with a thickness of at least one of the layers, changing many times, increasing and decreasing, which will provide constructive pledged changing the thickness of the hatch of the ship. Cover of the hatch of the ship layered can be made with a thickness of at least one of the layers, changing repeatedly and periodically, which will provide constructive pledged changing the thickness of the hatch of the ship. Manhole cover layered vessel can be performed with a convex part length of the boundary line, at least one of the parties relative to the centerline of the cross section of at least one of the layers that will provide constructive pledged changing the thickness of the hatch of the ship. Manhole cover layered vessel can be performed with a concave part length of the boundary line, at least one of the parties relative to the centerline of the cross section of at least one of the layers that will provide constructive pledged changing the thickness of the research Institute of the boundaries of at least one side of at least one of the layers, that will improve the manufacturability of the Assembly of the structure of the vessel containing the hatch. Manhole cover layered vessel can be performed with steps that can be increased or decreased thickness of at least one of the layers of material in the transition from one step to another, which will improve the manufacturability of the Assembly of the structure of the vessel containing the hatch. Manhole cover layered vessel may be accomplished by bending and/or bending at least one edge of the material that will improve the manufacturability of the Assembly of the structure of the vessel containing the hatch. Manhole cover layered vessel can be performed with repeated bending and/or bending of the material, including changes concavity including opposite that will improve the manufacturability of the Assembly of the structure of the vessel containing the hatch. Cover of the hatch of the ship, layered can be performed with at least one recess on the length of the boundary line of the at least one side of at least one of the layers that will improve the manufacturability of the Assembly of the structure of the vessel containing the hatch. Manhole cover layered vessel can be performed with at least one protrusion on the th manufacturability of the Assembly of the structure of the vessel, contains the hatch. Manhole cover layered vessel can be performed with at least one metal layer, and also any part of any other layer of metal or non-metal that will improve the corrosion resistance of the hatch of the ship layered. Manhole cover layered vessel can be performed with at least one cavity for at least part of the length of the boundary line at least between two adjacent layers, which allows to increase the insulating properties of the cover of the hatch of the ship layered. Manhole cover layered vessel can be performed with periodic cavities on at least part of the length of the boundary line at least between two adjacent layers, which allows to increase the insulating properties of the cover of the hatch of the ship layered. Manhole cover layered vessel can be performed with at least one recess on at least one of the vertices of at least one of the layers section that will improve the manufacturability of the Assembly of the structure from the cover of the hatch of the ship layered. Manhole cover layered vessel can be performed with at least one protrusion on at least one of the vertices of at least one of the Sabbath."> Manhole cover layered vessel can be performed with at least one vertex of at least one of the layers section and/or part of the length of the border at least one side of at least one of the layers of the cross section containing the section fragments and/or combinations of fragments: polygons, conic sections of a right circular cone that will improve the accuracy of Assembly of the structure from the cover of the hatch of the ship layered when connecting protrusion and the recess. Manhole cover layered vessel can be performed with at least one gap thickness of at least one of the layers. Moreover, the gap thickness can be performed repeatedly and periodically that will improve the manufacturability of the Assembly of the structure from the cover of the hatch of the ship layered. The terms used in the applicationThe term "top" refers to the part of the cross-section of at least one layer of material adjacent to the pair of front and back sides of the layer or to the site mate one side of this layer with the border parts section of this layer, connecting the front and back sides of this layer. "Face layer" should be considered side layer lying closer to the front side Moroni hatch of the ship layered. The term "front side layer" is used in this context throughout the description, including the claims. The term "back layer" is used in this context throughout the description, including the claims. The term "peak" is used in this context throughout the description, including the claims. The term "oblique conic section" should be understood line, which forms a surface of a right circular cone and the clipping plane not passing through its top, provided that the angle between the plane and the axis of a right circular cone is different from the right angle [6]. The term "oblique conic section" is used in this context throughout the description, including the claims. The term "identification" should be understood to establish whether as a party of interest, and a piece of an object (product) to its individual identification sign. Identification can be done by drawing identifier (a label) to the product or the introduction of ID in the item (on its surface), for example, the information signal about the manufacturer of the product in the Institute of all descriptions, including the claims. The term "mechanical properties" shall mean the ability of a material and its design to resist damage, and changes in the form, including irreversible change in the shape (plastic deformation) under the action of external loads, in the narrow sense - only fracture resistance. Strength properties of solids due ultimately the forces of interaction between atoms and ions that make up the body. The term "mechanical properties" wider than strength, and actually combines the strength, stiffness and stability. Mechanical properties depend not only on the material, shape of the transverse or longitudinal section, and the stress (tensile, compression, bending and other), operating conditions (temperature, loading rate, duration and number of cycles of loading, environmental effects and so on). Depending on all these factors in the technique adopted various measures strength: tensile strength, yield strength, fatigue limit, etc. Increase the strength properties of materials is achieved by thermal and mechanical treatment, the introduction of alloying elements in the alloys, radiation exposure,ximala possible moment of inertia in the plane of bending (twisting) of the moment. The term "mechanical properties" is used in this context throughout the description, including the claims. The term "stiffness" in the narrow sense refers to the characteristic of the structural element, which determines its ability to resist deformation (stretching, bending, torsion, and so on); depends on the geometrical characteristics of the cross section and the physical properties of the material (modulus of elasticity). The term "stiffness" is used in this context throughout the description, including the claims. The term "warp" (from lat. deformatio - distortion) refers to the change in the relative positions of points of a rigid body, which changes the distance between them as a result of external influences. The deformation is called elastic if it disappears after removal of the impact, and plastic, if it does not disappear completely. The most common types of deformation - tension, compression, bending, torsion. The term "deformation" is used in this context throughout the description, including the claims. The term "thickness of cap" refers to the distance between the upper and lower lines (front and back)Exte throughout the description, including the claims. The term "plane" is the simplest surface. The concept of the plane (like a point and a line) belongs to the basic concepts of geometry. The plane has the property that any straight line connecting two points belongs to her. The intersection of the planes forms a line. The term "plane" is used in this context throughout the description, including the claims. The term "slope" refers to the type of deformation, characterized by the curvature (the curvature changing) axis or median surface element (beam, rod, plate, etc.,) under the action of external loads. There are curves: clean, transverse, longitudinal, longitudinal-transverse. The term "curve" is used in this context throughout the description, including the claims. The term "line" refers to (from lat. linea) the common part of two adjacent areas of the surface. Moving point describes when moving a certain line. In analytic geometry in the plane of the line are expressed as equations between the coordinates of their points. In a rectangular coordinate system lines are separated depending on vilalta algebraic curve of n-th order. Line 1-th order is direct. Conic sections are lines of 1st and 2nd order. Examples algebraicheskikh line - graphs of trigonometric functions, logarithmic functions, exponential functions. The term "line" is used in this context throughout the description, including the claims. The term "combination" means (from Postnet. combinatio connection) combination, the mutual position of something (e.g., the combination of fragments of lines). The term "combination" is used in this context throughout the description, including the claims. Information confirming the possibility of carrying out the invention The essence of the invention and the possibility of its practical implementation is illustrated by drawings, where Fig.1 shows a cross-section of a cover of the hatch of the ship layered in Fig. 2-7 depict examples of constructive execution of the cross-section of a cover of the hatch of the ship layered in Fig.8-21 shows examples of the constructive execution of parts of the cross-section of a cover of the hatch of the ship layered. Cover of the hatch of the ship layered (Fig. 1) contains a cross-section of at least two layers 1 and 2 with the boundaries of the front 3 and t 3 front side, and/or on the border of 4 rear side and/or at least one of the vertices 5, at least one of the layers of the cross section is made in the form of a fragment of an oblique conical combination 6 of a right circular cone. In the examples of constructive perform a cover of the hatch of the ship layered depicted in Fig.1 and 2, formed by the vertices 5 angle 7 can be made smaller than 180o. In the examples of constructive perform a cover of the hatch of the ship layered depicted in Fig.1 - 13, one of the layers 1 (2) is made of variable thickness. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.2, the thickness of the layer 2 increases in a direction from one edge of section 8 to the opposite edge 9. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig. 3, the thickness of the layer 2 is reduced in the direction from the inner part 10 section to the edges 8 and 9. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig. 4, the thickness of the layer 2 is reduced in the direction from the inner part 10 section to the edge 9. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.5, the thickness of the layer 1 is changed repeatedly the Oh in Fig.6, the thickness of layer 1 (2) changes repeatedly and periodically. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.7, a portion of the length of the boundary line of the front side 3 relative to the centerline of the cross section of the layer 1 is made convex, as part of the length of the boundary line of the back side 4 relative to the centerline of the cross section of the layer 1 is made concave. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.8, a portion of the length of the boundary line of the front side 3 of the layer 2 (back side 4 layer 1) is performed with step 11. Stage 11 can be performed (Fig. 9) as with increasing thickness of at least one of the layers (1) hatch cover layered vessel when passing from one level to another, and with a reduction. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.10, the latter is curved and/or the ACC 12. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.11, the bending and/or ACC 12 material performed multiple times, including with the change of concavity on the opposite. In the example of structural embodiment of a cover of the hatch of the ship layered image is constructive perform a cover of the hatch of the ship layered, is depicted in Fig.13, a portion of the length of the boundary line of the front side 3 of the layer 1 is made with a ledge 14. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.14, a layer 2 of a material made of metal, and the layer 1 is made from non-metal part 15 and with metal part 16. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.15, between layers 1 and 2 material made cavity 17. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.16, between layers 1 and 2 material made periodic cavity 17. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.17, the top 5 layer 1 material made with the notch 18. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.18, the top 5 layer 1 material made with the tab 19. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.19, the edge layer 1 of the hatch of the ship layered contains a fragment of a circle 25. In the layered sheet construction material of at least one of the peaks of section 5 and/or part of the length of an edge is ATA 20, rectangle 21, line 22, 23 diamond, triangle 24 and so on and so forth), conic sections of a right circular cone (circle 25, ellipse, 26 and so on and so forth). In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.20, the thickness of the layer 1 material has a gap 27. In the example of structural embodiment of a cover of the hatch of the ship layered depicted in Fig.24, the gaps 27 layer 1 is made repeatedly and periodically. Thus, the application of this cap layered vessel will help achieve the objectives of the invention. Literature: 1. Bronstein, I. N., Semendjajew K. A. Handbook of mathematics - M.: Nauka, 1980. - 975 S. 2. Yusupov P. M. Statistical methods of processing the results of observations): MO, 1984. - S. 557 3. Profitable M. J. Analytical geometry): Fizmatgiz, 1963. - 468 S. 4. Ermakov, S. M. the Mathematical theory of optimal experiment - M.: Nauka, 1987. - 317 S. 5. Demidenko E. H. Linear and nonlinear regression - M.: Finance and statistics, 1981. - 291 S. 6. Mathematical encyclopedic dictionary): "Soviet encyclopedia", 1988, 847 S. 1. Manhole cover layered vessel containing a cross-section along the extreme is e one of the layers and/or at least one of the vertices of at least one of the layers of the cross section along at least part of the boundary line section is made in the form of a fragment and/or combinations of fragments oblique conic sections of a right circular cone. 2. Cover of the hatch of the ship layered under item 1, characterized in that the angle of at least one vertex of at least one of the layers of the cross section is less than 180o. 3. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that at least one of the layers is made of variable thickness. 4. Cover of the hatch of the ship layered under item 3, characterized in that the thickness of at least one of the layers increases in a direction from one end section to the other. 5. Cover of the hatch of the ship layered under item 3, characterized in that the thickness of at least one of the layers increases in a direction from the inner part of the cross section along at least one edge. 6. Cover of the hatch of the ship layered under item 3, characterized in that the thickness of at least one of the layers decreases in the direction from the inner part of the cross section along at least one edge. 7. Cover of the hatch of the ship layered according to any one of paragraphs.3 to 6, characterized in that the thickness of at least one of the layers is changed multiple times, increasing and decreasing. 8. Cover of the hatch of the ship layered according to any one of paragraphs.3 to 6, characterized in that the thickness of at least one of the layers is changed repeatedly and periodicaliy the boundary line of the at least one side of at least one of the layers relative to the centerline of the cross section of the layer is made convex. 10. Cover of the hatch of the ship layered according to any one of paragraphs.1 to 8, characterized in that the portion of the length of the boundary line of the at least one side of at least one of the layers relative to the centerline of the cross section is made concave. 11. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that the portion of the length of the boundary line of the at least one side of at least one of the layers is made staggered. 12. Cover of the hatch of the ship layered on p. 11, characterized in that the step can be made by increasing the thickness of the material layer at the transition from one stage to another, and with a reduction. 13. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that at least one edge of the material is made by bending and/or ACC. 14. Cover of the hatch of the ship layered on p. 13, characterized in that the bending and/or bending of the material may be performed including repeated with change of concavity including opposite. 15. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that the portion of the length of the boundary line of the at least one side of at least one of the layers of wypadkow, characterized in that a portion of the length of the boundary line of the at least one side of at least one of the layers is made of at least one ledge. 17. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that at least one of the layers is made of metal, and any part of any other layer is made of a metallic or non-metallic. 18. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line at least between two adjacent layers is made of at least one cavity. 19. Cover of the hatch of a vessel under item 18, characterized in that the cavity is made periodic. 20. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that at least one vertex of at least one of the layers of the cross section is made with at least one recess. 21. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that at least one vertex of at least one of the layers of the section made at least one ledge. 22. Cover of the hatch of a vessel according to any one of paragraphs.9 - 21, different tema least one side of at least one layer section made of a group, containing section fragments and/or combinations of fragments: polygons, conic sections of a right circular cone. 23. Cover of the hatch of the ship layered according to any one of the preceding paragraphs, characterized in that the thickness of at least one of the layers has at least one gap. 24. Cover of the hatch of the ship on p. 23, characterized in that the gaps thickness executed repeatedly and periodically.
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