RussianPatents.com

Knife. RU patent 2269409.

FIELD: hand-held cutting tools.

SUBSTANCE: knife comprises handle, body with blade and back edge provided with the stop mounted for permitting movement along the back of the knife body. The blade is horizontal. The knife body is provided with the additional blade at an blunt angle to the horizontal blade. The stop is provided with the rectangular shank having L-shaped tip with a groove in its vertical wall. The stop is provided with the groove along the axis of symmetry from below, whose width is equal to the thickness of the knife body, and, from above, with the ellipsoidal area which smoothly goes into the rectangular shank. The handle is secured to the knife body above the horizontal blade and back and is provided with the horizontal groove from above, whose depth is equal to the thickness of the rectangular shank of the stop for setting the rectangular shank of the stop having a hollow for the free receiving of L-shaped stop tip at its end. To provide movement of the stop, a screw with the head is mounted in the top section of the handle face . The L-shaped tip of the stop is made for permitting free setting in the vertical wall on the cross-piece of the screw head. From the back face, the screw head has a thickening whose width is greater than the width of the L-shaped tip of the stop, and the hollow in the groove of the handle with L-shaped tip of the stop is provided with wax flush-mounted with the surface of the handle .

EFFECT: expanded functional capabilities.

5 dwg

IPC classes for russian patent Knife. RU patent 2269409. (RU 2269409):

B26B9/02 - characterised by the shape of the cutting edge, e.g. wavy

B26B3/02 - Table-knives (B26B0009020000 takes precedence);;

Another patents in same IPC classes:

Knife / 2269409
Knife comprises handle, body with blade and back edge provided with the stop mounted for permitting movement along the back of the knife body. The blade is horizontal. The knife body is provided with the additional blade at an blunt angle to the horizontal blade. The stop is provided with the rectangular shank having L-shaped tip with a groove in its vertical wall. The stop is provided with the groove along the axis of symmetry from below, whose width is equal to the thickness of the knife body, and, from above, with the ellipsoidal area which smoothly goes into the rectangular shank. The handle is secured to the knife body above the horizontal blade and back and is provided with the horizontal groove from above, whose depth is equal to the thickness of the rectangular shank of the stop for setting the rectangular shank of the stop having a hollow for the free receiving of L-shaped stop tip at its end. To provide movement of the stop, a screw with the head is mounted in the top section of the handle face . The L-shaped tip of the stop is made for permitting free setting in the vertical wall on the cross-piece of the screw head. From the back face, the screw head has a thickening whose width is greater than the width of the L-shaped tip of the stop, and the hollow in the groove of the handle with L-shaped tip of the stop is provided with wax flush-mounted with the surface of the handle .

Knife / 2277468
Knife, namely knife for household, includes cutting portion with notched zone and two surfaces, each passing at one side from central plane. Notched zone has recesses formed at both sides from central plane in such a way that said recesses alternate in one and other surfaces of knife. Recesses extend from one surface of knife to its other surface till central plane and beyond it for forming cutting edge that (in side view) passes on surface of knife up and down. Said recesses are rounded ones.

Cutter for cutting out holes in elastic sheet material / 2292257
Cutter is in the form of pipe. Pointed cutting edge is formed on pipe. Several teeth having pointed apexes and lateral cutting edges are alternatively arranged along length on pipe with mutual overlapping along circle in their widest portion. Each tooth has two cutouts near its root; length of said cutout in direction of cutting motion exceeds thickness of cut-out material.

Disk cutter / 2297902
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