Class 30/356 - Longitudinally curved

Subclass of Class 30 - Cutlery
Definition: Blades which are curved longitudinally or along their length.
No. of patents: 40
Last issue date: 06/17/2008

Number	Title	Issue Date
7386941	Slit pick and hold triple function graphic arts safety blade A triple function slitting, picking, and holding safety blade for use in the graphic arts trade; for slitting through, picking up, and holding portions of computer cut vinyl adhesive material. A slight rotation of a user's blade holding tool changes a blade's functi...	06/17/2008
7290341	Beveled edge thin cutting knife A knife is disclosed for cutting crop materials, and includes a base portion having an interior edge and a pair of end edges. The base portion has an exterior region opposite the interior edge and has opposite major faces. The knife further includes a plurality of t...	11/06/2007
7228633	Saber For use as a law enforcement weapon, a saber is provided having an elongated blade and a hilt affixed to one end thereof The blade has a triangular cross section including a pair of concave sides converging to a sharp common edge. The third side in opposed relation ...	06/12/2007
7013569	Cutting tool with curved distal portion and associated methods A cutting tool includes an elongate handle to be grasped by a user, and an elongate blade connected to the elongate handle. The elongate blade includes a substantially linear proximal portion extending longitudinally outwardly from an end of the handle, and a curved...	03/21/2006
6722969	Folding precision taxidermy cutting system A precision micro taxidermy cutting instrument is provided which includes a single hold tailless frame member to which a pivotable body member is attached. The body member can provide a blade element which is concave and through which a lifting edge which cuts and a...	04/20/2004
6591508	Knife for cutting insulation batts A knife for cutting fibrous insulation batts in a single motion with one hand consists of a blade having a smooth, curved edge adapted to both compress and cut the insulation batt along the entire length of the curved edge without tearing the insulation b...	07/15/2003
6553885	Knife blade for cutting food products A knife blade for cutting food products includes a cutting edge having a concave circular curved central portion and opposed linear end portions tangentially intersecting and extending away from opposite sides of the circular curved central portion. The s...	04/29/2003
6471577	Precision micro cutting system A precision micro taxidermy cutting instrument can include a single hole tailless frame member, a pivotable body member, a concave blade element, a lifting edge and a retention edge with a centering feature enhanced by blade body designs which also center...	10/29/2002
6401341	Knife set for removing thorns from cactus A knife set for removing thorns from the surface of the nopal cactus petal which, in one aspect, is comprised of a cutting tool with a handle and a curved cutting blade extending out of a handle member. The handle is configured in a plane that is elevated...	06/11/2002
6203418	Precision taxidermy and field-use micro cutting system A precision micro taxidermy cutting instrument is provided which includes a single hold tailless frame member to which a pivotable body member is attached. The body member can provide a blade element which is concave and through which a lifting edge which...	03/20/2001
6122831	Knife for cutting insulation batts A knife for cutting fibrous insulation batts in a single motion with one hand consists of a blade having a smooth, curved edge adapted to both compress and cut the insulation batt along the entire length of the curved edge without tearing the insulation b...	09/26/2000
6045911	Cutting filament The present invention relates to a cutting filament intended for trimming and cutting vegetation, such a cutting filament being used on rotary-head motorized cultivators such as brush cutters and edge trimmers. During use such cutting filaments generate a...	04/04/2000
5979056	Body shaving device with curved razor blade strip A manually operated, finger and/or hand-manipulatable non-electric body shaving device for shaving substantially curved portions of the body such as the legs, arms and underarm regions, includes a handle portion and a curved razor blade strip base support...	11/09/1999
5920992	Two handle pizza cutter A pizza cutter with a dull convex cutting blade and a handle having two upwardly tilting ends. The non-cutting edge of the blade is fixed into a downwardly extending portion of the handle member. One end of the handle member includes a substantially oval ...	07/13/1999
5819417	Hose clamp cutting device A tool for cutting elastomeric type hose clamps that are applied by shrink wrapping techniques includes a tubular member with a telescoping rod therein. A blade is attached to the rod. As the handle grips, attached to the rod and the tube, are manually ma...	10/13/1998
5787591	Knife blade edge A knife blade has an edge provided with a recessed portion of a wavy profile and extending from the heel to the tip of the blade. The recessed portion of the edge is composed of a plurality of thick segments and thin segments. The thick segments press aga...	08/04/1998
5724739	Self-defense knife A self-defense knife has a handle and a blade. A user of the knife preferably holds it by the handle such that the blade extends toward the elbow of the user. The blade has a blunt edge and an opposite sharp edge. The knife is preferably held, more partic...	03/10/1998
5697453	Subsurface cutting tool A subsurface weed tool which makes use of a variety of different detachable blade attachments to cut the roots of and other plants. The tool can be provided with a variety of different attachments, permitting it to be used for other purposes such as aerat...	12/16/1997
5669142	Knife for cutting insulation batts A knife for cutting fibrous insulation batts in a single motion with one hand consists of a blade having a smooth, curved edge adapted to both compress and cut the insulation batt along the entire length of the curved edge without tearing the insulation b...	09/23/1997
5581887	Conch extractor tool A conch extraction tool for removing a conch from its shell. The tool is generally comprised of a flat helically shaped spring like material which is inserted near the foot of the conch and gently twisted into the shell and manipulated therein to disconne...	12/10/1996
5568688	Hair shaving device with curved razor blade strip A manually operated, finger-manipulatable non-electric hair trimming device is provided for shaving nostril hair, ear hair or the like. The hair trimming device includes a head structure sized to fit within a small body cavity, such as a person's nostril ...	10/29/1996
5424128	Flexible cutting line with controlled drag A monofilament line for a rotating string trimmer has a main body portion of a generally circular configuration. One or more sharp longitudinal cutting edges are integrally formed with the main body portion and protrude from the main body portion at an an...	06/13/1995
5417777	Alloy for backing steel of a bimetallic band saw blade A bimetallic band saw blade has a high speed cutting edge welded to a backing band of a steel alloy containing the following elements percentages by weight: Cr - 0.5% to no more than 1.5% V - 0.10% to 0.75% Mo - 1.5% to 2.5% wherein said backing band comprises...	05/23/1995
5401208	Oyster knife A knife which is used to open shells of oysters and shellfish having a blade which extends from a handle having a void therein, wherein the blade has a relatively flat bottom surface which joins a top surface at a point opposite said handle, and the top s...	03/28/1995
5322277	Fencing blade A fencing blade is described comprising a substantially planar elongate strip having at least a portion thereof shaped to be non-planar in cross-section. In a preferred embodiment of the invention, a foil or sabre type blade is made from a planar, taperin...	06/21/1994
5291813	Paper perforating device A sheet perforating punch formed of hard polymeric material formed of a punch plate with punching teeth and a die plate with holes intended to be registered with the teeth, snap-together hinging being provided for rotatably coupling the two plates togethe...	03/08/1994
5111583	Bladed implement A bladed implement such as a knife, has a flexible blade extending from a handle. The blade can be rigidified for use by a series of slides which run along a slot in the blade and which can be forced into and held in end to end contact by an operating mec...	05/12/1992
5107593	Scraper blade and method of making same A blank for a scraper blade is disclosed. The blade is designed to fit into a utility knife and is bent so as to be useful as a scraper....	04/28/1992
5056388	Blind cutting machine A cutting member and machine for cutting elongate members is disclosed. The cutting member comprises a body having a cutting edge defining a cavity such that the cutting edge contacts a surface to be cut at at least two points. The cutting machine compris...	10/15/1991
4980974	Contoured shaving blades A conventional shaving razor having one or more vertically stacked razor blades. Each upper blade having the same length but a width less than that of the lower blade. The cutting edges of each double-edged blade is contoured on approximately a six inch r...	01/01/1991
4970786	Produce peeling device A curved knife for manually peeling produce and especially for simultaneously peeling the sides and bottom of produce halves, such as avocados and melons, while keeping the flesh in one intact piece as the device is rotated around the interior wall of the...	11/20/1990
4945638	Hedge cutting, trimming and pruning tool A tool for manually cutting, trimming and pruning hedges and the like. This cutting tool has a semi-circular curved blade, with a cutting surface on the inner side thereof, said blade being attached to a handle by wing nuts and bolts or other fastening me...	08/07/1990
4936884	Grass cutting device A cutting device is provided to replace a conventional lawnmower blade which offers improved safety, outstanding grass cutting ability, improved grass bagging suction, and a reduction in the strain on the engine. The device includes an elongated, downward...	06/26/1990
4825552	Fillet knife having a flexible handle A knife according to the invention has a handle with improved flexibility and gripping characteristics. The tang embedded in the unitary handle has a series of spaced-apart flex sites at which the tang can resiliently bend. The handle is made of a resilie...	05/02/1989
4709481	Shaving tool There is disclosed herein an instrument for use in efficiently and sanitarily extricating an ingrown hair from the skin, the instrument comprising an elongate handle and a tip attached to the handle, wherein the tip comprises a curved and tapered blade....	12/01/1987
4502484	Nasal surgical saw A surgical saw including a shank extension is adapted for securement within a reciprocating power handle held within the hand of a surgeon. The saw comprises an elongated, concave, curved, relatively thin blade, the blade having X-, Y-, and Z- axes, the c...	03/05/1985
4215471	Fruit knife A fruit knife has a handle, and a blade connected with the handle and having a plurality of throughgoing apertures. This permits the juice produced during movement of the blade through the fruit to flow through the apertures and thereby prevents spurting ...	08/05/1980
4203214	Knife A multi-purpose knife has an arcuate shaped blade and a denticulate cutting surface on a curved portion of the blade. The cutting surface includes a continuous cutting edge and a pair of beveled surfaces associated with each denticle which intersect at th...	05/20/1980
4117593	Knife A knife has a generally flat blade with a sharp curved lower cutting edge which terminates forwardly and rearwardly in sharp cutting ends; an upper surface of the blade opposite the cutting edge is extended upwardly and forms a stem, and a curved cross se...	10/03/1978
4057087	Corrugated blade for tree harvester An apparatus includes a pair of corrugated blades, each defining parallel elongated ridges running from the cutting edges thereof substantially the full length thereof. The apparatus may be positioned so that the cutting edges of the blades may be brought...	11/08/1977

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Class 30/356 - Longitudinally curved