Cover of the hatch of the ship |
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IPC classes for russian patent Cover of the hatch of the ship (RU 2143366):
                
 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 the hull structures, ship superstructures, etc. Cover of the hatch of the vessel contains a cross-section of the border of front and back sides. At least on the border of the front and/or rear side and/or at least one of the vertices of the cross section along at least part of its border is made in the form of a fragment and/or combinations of fragments oblique conic sections of a right circular cone. Angle of at least one of the peaks of the cross-section may be less than 180o. Cover may have a variable thickness. This thickness may be increased or decreased in the direction from the inner part of the cross section along at least one edge. This thickness may increase in the direction from one edge of the section to another. The thickness of the cover may change multiple times, increasing and decreasing. It can periodically and repeatedly to change. On the length of the boundary line, at least one of the parties relative to the centerline of the cross section can be convex or concave. This line can be performed stepwise. At least one edge of the cover may be curved and/or ACC. The bending length of the boundary line, at least one of the parties may be executed with at least one recess or protrusion. At least one top section of the cover can be performed with at least one recess or protrusion. The thickness of the cover may have at least one gap. The gap thickness can be repeated and periodic. The technical result of the invention is the improvement of performance characteristics of the cover. 20 C.p. f-crystals. 18 Il. The invention relates to the field of shipbuilding and can be used in the construction of hull, superstructures, etc. ArtSimilar to the proposed device can be considered as the panel sections of the hull. C. the USSR N 1172812 op. 15.08.85, MCI B 63 B 3/00, containing in the cross section of the border front and back sides. The disadvantages are the counterpart: A) lack of 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 the hatch of the ship. When designing structures, generally known future scheme of loading hatch of the ship. I.e. on known parameters of loading last may, including calculation methods the/P> 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) 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. B) 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 the failure in the extreme, the Rheine 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 "Cloth marine corps design".with. USSR N 1102710, op. 15.07.84, MCI B 63 B 3/14 containing cross-sectional boundaries of the front and rear. The disadvantages of the prototype are: A) lack of 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 the hatch of the ship. When designing structures, generally known future scheme of loading hatch of the ship. 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 irrational, the weight of the hatch and in General part of the design of the vessel containing the hatch. B) lack of constructive zalojeno the tion 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. B) 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 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 part of the boundary line of the cross-section may be in the form of fragm the th 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 hatch cover of the vessel, provides: 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 hatch; increased 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. This technical result of the invention is achieved by the fact that the cover of the hatch of the vessel contains a cross-section of the border front and back sides and at least on the border of the front and/or rear side and/or at least one of the vertices of the cross section along at least part of the boundary line section is made in the form of a fragment and/or a combination of the fragment is active 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. Creating ravnopolochny design of the cover of the hatch of the ship 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. I.e. manhole cover is made of a vessel with a defined cross-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 longitudinal section. C) increased reliability determine the manufacturer of the hatch of the vessel due to the presence in it (for example, at the boundary of the cross section) of a manufacturer ID. Currently used to label products are short-lived, and branding lead to the first cast out the 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 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 the specific manufacturer (its features) first quarter will be from the area of an ellipse, hyperbola or parabola. Any curves, United by the concept of "conic section", is uniquely identified using known mathematics the two labels and branding 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, 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. Mentioned identifiers and methods of their application to the objects described in the descriptions of the Patents of 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,; the tion made the cover of the hatch of the vessel 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 of the invention, 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 set of essential features set forth in the claims, is unknown. This allows us to conclude that it conforms to the criterion "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. The unknown impact of the distinctive features on the specified set of technical results. Therefore, the claimed invention meets the criterion of "inventive step". Cover of the hatch of the vessel can be performed with the formation of an angle of at least one of the vertices of the cross section (edge section) is less than 180othat will improve the manufacturability of the Assembly structure containing the hatch. Cover of the hatch of a vessel may be made of variable thickness that will ensure the manufacturability of the Assembly structure containing the hatch. Cover of the hatch of a vessel may be made with a thickness increasing in the direction from one edge of the section to another, which will provide constructive pledged change the thickness of the hatch cover. Cover of the hatch of a vessel may be made with a thickness increasing in the direction from the inner part of the cross section along at least one edge that will allow for constructive pledged change the thickness of the hatch cover. Cover of the hatch of a vessel may be made with a thickness decreasing in the direction from the inner part of the cross section along at least one edge that will allow for constructive pledged change the thickness of the hatch cover. Cover of the hatch of the vessel can be made with thicknesses is olseni hatch. Cover of the hatch of the vessel can be performed with thickness, changing repeatedly and periodically, which will provide constructive pledged change the thickness of the hatch cover. Cover of the hatch of the 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 that will provide constructive pledged change the thickness of the hatch cover. Cover of the hatch of a vessel may be made with a concave part length of the boundary line, at least one of the parties relative to the centerline of the cross section that will provide constructive pledged change the thickness of the hatch cover. Cover of the hatch of the vessel can be performed with a stepped part of the length of the boundary line, at least one of the parties that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with steps that may have increasing or decreasing the thickness of the material at the transition from one step to another, which will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of a vessel may be made by bending and/or bending at least one is Edna can be performed with repeated bending and/or bending of the material, including the change in concavity including opposite that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with at least one recess on the length of the boundary line, at least one of the parties that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with at least one protrusion on the length of the boundary line, at least one of the parties that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with at least one recess on at least one of the vertices of the cross section that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with at least one protrusion on at least one of the vertices of the cross section that will improve the manufacturability of the Assembly of the structure containing the hatch. Cover of the hatch of the vessel can be performed with at least one of the vertices of the cross section and/or part of the length of the border at least one side of the section containing the section fragments, or a combination of perejevaite accurate Assembly designs. Cover of the hatch of the vessel can be performed with at least one gap thickness in cross section. Moreover, the gap thickness can be performed repeatedly and periodically that will improve the manufacturability of the Assembly of the structure containing the hatch. The terms used in the application The term "top" refers to the portion of the section of material adjacent to the pair of front and back sides, or where the pairing of one of the parties to the border of the segment connecting the front and back sides. 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 is of tificate (labels) 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 form of the lateral surface. The term "identification" is used in this context throughout the description, 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 the 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, ultimate tekeu processing, the introduction of alloying elements in the alloys, radiation exposure, the use of reinforced and composite materials, the formation of the transverse (longitudinal) cross-section with a maximum 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, the Scriptures, including the claims. The term "thickness of cap" refers to the distance between the upper and lower lines (front and back) the boundaries of the cross section of the hatch. The term "thickness of the hatch cover" is used in this context 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" pontii some 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 the form of equations. If the equation of a line has the form F(x,y), where F(x,y) is a polynomial of n-th degree in x, y, then the line is called an 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 (for example, 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 longitudinal section of the cap of the vessel of Fig. 2-7 depict examples of aqueous execute parts of the cross-section of a cover of the hatch of the ship. Cover of the hatch of the vessel (Fig. 1) contains in longitudinal section the boundary line of the front 1 and rear 2 side, and at least a portion of the boundary line of the cross section at the boundary 1 of the front side and/or on the border of 2 rear side and/or at least one of the vertices of the 3-section made in the form of a fragment of conic sections 4 of a right circular cone. In the examples of constructive perform a cover of the hatch of the vessel depicted in Fig. 1 and 2, formed by the vertices of the 3 angle 5 can be made smaller than 180o. In the examples of constructive perform a cover of the hatch of the vessel depicted in Fig. 1 - 13, the latter performed with variable thickness in cross section. In the example of structural embodiment of the cap of the vessel depicted in Fig. 2, the thickness of the latter is reduced in the direction from one edge of the section 6 to the opposite edge 7. In the example of structural embodiment of the cap of the vessel depicted in Fig. 3, the thickness of the latter is increased in the direction from the inner part 8 section to the edges 6 and 7. In the example of structural embodiment of the cap of the vessel depicted in Fig. 4, the thickness of the latter is reduced in the direction from the inner part 8 section to the edge 7. In the use of the but increasing and decreasing. In the example of structural embodiment of the cap of the vessel depicted in Fig. 6, the thickness of the latter is changed repeatedly and periodically. In the example of structural embodiment of the cap of the vessel depicted in Fig. 7, a portion of the length of the boundary line of the front side 1 relative to the centerline of the cross section is made convex, as part of the length of the boundary line of the back side 2 relative to the centerline of the cross section is made concave. In the example of structural embodiment of the cap of the vessel depicted in Fig. 8, a portion of the length of the boundary line of the front side 1 is made with step 9. Stage 9 can be performed (Fig. 9) as with increasing thickness of the transition from one stage to another, and with a reduction. In the example of structural embodiment of the cap of the vessel depicted in Fig. 10, the latter is curved and/or ACC 10. In the example of structural embodiment of the cap of the vessel depicted in Fig. 11, the bending and/or ACC 10 hatch executed multiple times, including with the change of concavity on the opposite. In the example of structural embodiment of the cap of the vessel depicted in Fig. 12, a portion of the length of the line Grani, is depicted in Fig. 13, a portion of the length of the boundary line of the front side 1 is made with the tab 12. In the example of structural embodiment of the cap of the vessel depicted in Fig. 14, the top 3 hatch cover is made with a recess 13. In the example of structural embodiment of the cap of the vessel depicted in Fig. 15, the top 3 hatch cover is made with a ledge 14. In the example of structural embodiment of the cap of the vessel depicted in Fig. 16, the edge of the hatch cover contains a fragment of a circle 20. In the section of the hatch cover at least one of the vertices of the 3-section and/or part of the length of the border line (side section 1 (2) may contain in section fragments and/or combinations of fragments: polygon (square 15, rectangle 16, line 17, rhombus 18, triangle 19 and so on and so forth), conic sections of a right circular cone (circle 20, ellipses, 21 and so on and so forth). In the example of structural embodiment of the cap of the vessel depicted in Fig. 17, the thickness of the hatch cover section has a gap 22. In the example of structural embodiment of the cap of the vessel depicted in Fig. 18, the gaps 22 thickness executed repeatedly and periodically. Thus, the application of this cap, sonic mathematics - M.: Nauka, 1980. - 975 S. 2. Yusupov R. M. Statistical methods of processing the results of observations): MO, 1984. - S. 557 3. Profitable M. J. Analytical geometry. M: 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. Cover of the hatch of the vessel containing the cross section of the border of front and back sides, wherein at least on the border of the front and/or rear side and/or at least one of the vertices 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. Manhole cover under item 1, characterized in that the angle of at least one of the vertices of the cross section is less than 180o. 3. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that it is made of variable thickness. 4. Cover of the hatch of a vessel under item 3, characterized in that the thickness of the latter increases in napravlenii increases in a direction from the inner part of the cross section along at least one edge. 6. Cover of the hatch of a vessel under item 3, characterized in that the thickness of the latter is reduced in the direction from the inner part of the cross section along at least one edge. 7. Cover of the hatch of a vessel under item 3, characterized in that the thickness of the latter is changed multiple times, increasing and decreasing. 8. Cover of the hatch of a vessel under item 3, characterized in that the thickness of the latter is changed repeatedly and periodically. 9. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line, at least one of the parties relative to the centerline of the cross section is made convex. 10. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line, at least one of the parties relative to the centerline of the cross section is made concave. 11. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line of at least one of the parties has executed step. 12. Cover of the hatch of the ship on p. 11, characterized in that the step can be made by increasing the thickness of the washer during the transition from one step to another, and with a reduction. 13. Cover of the hatch of a vessel on any the m 14. Cover of the hatch of a vessel under item 13, characterized in that the bending and/or bending may be performed multiple times with the change of concavity including opposite. 15. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line, at least one of the parties made at least one notch. 16. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that a part of the length of the boundary line, at least one of the parties made at least one ledge. 17. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that at least one of the vertices of the cross section is made with at least one recess. 18. Cover of the hatch of a vessel according to any one of the preceding paragraphs, characterized in that at least one of the vertices of the section made at least one ledge. 19. Cover of the hatch of a vessel according to any one of paragraphs.9 to 18, characterized in that at least one of the vertices of the cross section and/or part of the length of the boundary line of the at least one side section is made from a group containing section fragments and/or a combination of blending into each other fragments: polygon, contem, what thickness has at least one gap. 21. Cover of the hatch of the ship on p. 20, characterized in that the gaps thickness executed repeatedly and periodically.
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