| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 030347000 |
Rotary
| 37 |
| 030346500 |
Razor blade
| 35 |
| 030350000 |
Metallurgical feature
| 14 |
| 030355000 |
Toothed or waved
| 12 |
| 030353000 |
Plural cutting edge | 5 |
| 20080201964 | Dual-Cut Saw Blade - A saw blade having a concavely curved sawing edge and two oppositely-directed sets of teeth. During reciprocation of the blade, a first set of the teeth may cut during a first stroke direction and the second set of teeth may cut during a second stroke direction. | 08-28-2008 |
| 20090031568 | Saw blade having helical structure - A saw blade includes an elongate and helical or flexible blade member having an outer peripheral cutting edge for allowing the blade member to be engaged into and engaged around a work piece without being maintained perpendicular to the work pieces and for allowing the blade member to be operated by the users. The blade member may include two elongate and planar blade elements superposed with each other and each having the cutting edge formed on the outer portion and extended out of an inner portion of the other blade elements for allowing the cutting edges of the blade elements to be exposed for easily working on or cutting the work pieces. | 02-05-2009 |
| 20110265333 | DUAL PURPOSE UTILITY KNIFE - A utility knife suitable for use both as a knife and a sheet cutter includes a casing for securing a blade having cutting edges on opposing sides. The casing includes a gathering finger extending from one side of the casing and spaced from a side of the casing to define a guideway leading to an exposed first edge of the blade for cutting sheet material. The finger is disposed in a spaced manner over the first edge of the blade to prevent inadvertent contact with the blade. A second opposite edge of the blade extends out of the opposite side of the casing to expose a forward portion of the blade for more conventional use as a knife. The blade is manually movable to a retracted portion wherein the blade's second edge is disposed within the casing. | 11-03-2011 |
| 20130167382 | HOOK BLADE ACCESSORY TOOL FOR AN OSCILLATING TOOL - An accessory tool for an oscillating power tool includes a mounting portion and a blade portion that extends from the mounting portion. The blade portion includes a first lateral edge portion, a second lateral edge portion, and a leading edge portion. A cutting edge is defined in the second lateral edge portion that includes a rearward facing portion that extends generally laterally from a distal end portion of the second lateral edge portion toward the first lateral edge portion and a forward facing cutting edge portion that extends from said second lateral edge portion toward said first lateral edge portion. The rearward facing cutting edge portion is at least partially interposed between the leading edge portion and the mounting portion, and the forward facing cutting edge portion is at least partially interposed between the rearward facing cutting edge portion and the mounting portion. | 07-04-2013 |
| 20140000117 | DOUBLE SIDED HAND HACK SAW BLADE AND METHOD OF MANUFACTURE | 01-02-2014 |
| 030357000 |
Edge structure | 5 |
| 20080235960 | Blade, Structural Components of a Blade, and Method For Manufacturing a Blade and the Structural Components of a Blade - The invention concerns a method for manufacturing a blade ( | 10-02-2008 |
| 20110113636 | BLADE FOR PAPER PUNCHES - A blade for paper punches includes a hollow tubular body with a passage defined axially therethrough and an inclined edge is defined in a lower end of the body. An angle between the inclined edge and a stack of paper sheet is in a range between 15 to 50 degrees. A spring is located in the passage of the body so as to bias a push rod which is movable in the passage to remove debris from the passage. | 05-19-2011 |
| 20120042526 | KNIFE BLADE - A knife blade includes a blade body having first and second major surfaces which respectively have marginal regions that extend toward a cutting line to form a cutting edge. The cutting edge includes successive cutting edge areas, at least one of which is cut along an inclined plane to form upstream and downstream surfaces. The downstream surface is configured to extend to join one of the first and second major surfaces to form, in terms of one cutting direction, a leading edge which forms a piercing site at the corresponding cutting edge area. With the cutting edge together with the piercing site of the leading edge, a food product having soft and hard textures may be cut effortlessly. | 02-23-2012 |
| 20120102763 | Metal Shear Head Center Blade - An improved longer life center blade for use in an existing metal cutting shear, by providing a center blade with a unique yoke profile, a reinforced bottom and a larger grind transition location. | 05-03-2012 |
| 20130111767 | Knife - A knife blade with a back, and a cutting edge with a shoulder, characterised in that the knife blade has a blade profile perpendicular to the blade edge that, starting at the shoulder and moving towards the back, has the following thickness, as ground prior to any polishing or subsequent steps, at the position indicated: at the shoulder a thickness of AA; at about 1/16″ from the shoulder a thickness of BB; and at about ⅛″ from the shoulder a thickness of CC; where AA is about 16 to 23 thousandths of an inch (0.41 mm to 0.58 mm); BB is AA plus about 3 thousandths of an inch (0.076 mm); and CC is BB plus about 2 thousandths of an inch. (0.051 mm). | 05-09-2013 |
| 030351000 |
Apertured, notched or lugged | 4 |
| 20080295344 | Utility knife blade - The utility knife blade is a blade for a utility knife having a slot formed in the blade that is especially useful when scoring drywall. The slot may engage a tape measure adjacent the tape hook so that the cutting edge at the scoring tip of the blade extends below the tape measure hook to engage the sheet of drywall. The slot extends through the cutting edge into the body of the blade at a slight angle relative to normal, preferably about 10°. The blade has a slot at each end so that the blade may be reversed when one end is dulled or broken. The blade has an otherwise standard configuration, typically having a trapezoidal body with a cutting edge extending along the longer parallel edge and a pair of notches in the shorter parallel edge for engaging knife holder retainer pins in the slidable utility knife holder carriage. | 12-04-2008 |
| 20130036616 | Dual point hobby knife blade - The apex portion of a triangular shape hobby knife blade has a linear cutting edge margin angling inward toward the apex, and an opposing lineal blunt edge margin having a single blunt edge notch to form both a blunt edge corner point within the blunt edge, and a cutting edge point tip at a distal end of the cutting edge. A concave portion of the notch is intermediate a beginning and ending portion; and with the notch as defined by the ending portion being directionally oriented to the elongate edges between a first angle and a second angle. The corner point and notch impede a penetration of the blade after the distal cutting tip impresses or pierces the skin; and also enables a motion toward the apex by the user to maneuver cut away substrate pieces without piercing damage. Shifting the blade toward the die cut or grinding forming means creates a larger notch to establish a new sharp distal cutting edge point tip within a previously damaged blade to serve as a cheaper alternative to the segmented break away blades. | 02-14-2013 |
| 20140182144 | UTILITY KNIFE BLADES HAVING MULTIPLE CUTTING EDGES AND SECURING CONNECTIONS - A three-sided, multi-edged disposable cutting blade for use within a utility knife. The cutting blade features between three and six distinct cutting edges. The cutting blade may be rotated and flipped such that each cutting edge may be presented from the utility knife as the active cutting edge. Features of the cutting blade include a wear-coat indicator which is located at or near each cutting edge and indicates when an edge has been used; grippable locations on the body of the blade to increase the grippibility of the blade when removing and handling the blade; multiple mounting-hole orientations; and mass-reducing punch-outs which reduce cutting friction of the blade against the object being cut. | 07-03-2014 |
| 20140366388 | RECIP BLADE - A recip blade has a blade body and a tang located at one end of the blade body. The blade body has a distal portion located on an opposite end of the blade body relative to the tang. The distal portion defines a tip and at least one aperture extending through the blade body. A cutting edge extends along the blade body between the tang and the tip. | 12-18-2014 |
| 030356000 |
Longitudinally curved | 2 |
| 20080250656 | COMPOSITE KNIFE BLADE - A composite knife blade includes a cutting-edge piece of a first alloy, a back piece of a second alloy different from the first alloy, the cutting-edge piece and the back piece are brazed together at a serpentine joint. The cutting-edge piece has a high Rockwell hardness value, as compared to a hardness of the back piece. A method of manufacture of the knife blade includes fine blanking the back piece of from a sheet of the first alloy, laser cutting the cutting-edge piece from a sheet of the second alloy, and brazing the first piece to the second piece to form a composite blade. The composite blade is then cooled from the brazing temperature to an austenizing temperature of the cutting-edge piece, and quenched, to harden the cutting-edge piece. | 10-16-2008 |
| 20140345148 | Cutting Blade For Use With Oscillating Power Tool - An oscillating cutting blade has a body with an attachment mechanism to couple the oscillating cutting blade with an oscillating tool. The attachment mechanism enables rotation of the body on the oscillating tool. A first cutting surface on the body cuts a workpiece in a pulling direction. A second cutting surface on the body cuts the workpiece in a pushing direction. | 11-27-2014 |
| 030348000 |
Reinforced | 1 |
| 20150075013 | RECIP BLADE WITH RIB, AND METHOD FOR MANUFACTURING THE SAME - A recip blade includes a blade body, a tang, a distal end, a cutting edge, and a rib. The tang is located an end of the blade body. The distal end is located at an opposite end of the blade body relative to the tang. The cutting edge extends in a lengthwise direction at least substantially between the tang and the distal end. The rib extends along at least a portion of the blade body. The rib and the cutting edge are spaced from one another by a heightwise-extending distance. A method includes: (i) providing a recip blade including the blade body, the tang, the distal end, and the cutting edge; (ii) forming the rib by increasing a widthwise-extending thickness of the blade body at the rib in comparison to a widthwise-extending thickness of the blade body at an adjacent portion of the blade body. | 03-19-2015 |
| Entries |
| Document | Title | Date |
|---|
| 20090007436 | Silicon blades for surgical and non-surgical use - Ophthalmic surgical blades are manufactured from either a crystalline or polycrystalline material, preferably in the form of a wafer. The method comprises preparing the crystalline or polycrystalline wafers by mounting them and machining trenches into the wafers. Methods for machining the trenches, which form the bevel blade surfaces, include a diamond blade saw, laser system, ultrasonic machine, a hot forge press and a router. The wafers are then placed in an etchant solution which isotropically etches the wafers in a uniform manner, such that layers of crystalline or polycrystalline material are removed uniformly, producing single, double or multiple bevel blades. Nearly any bevel angle can be machined into the wafer which remains after etching. The resulting radii of the blade edges is 5-500 nm, which is the same caliber as a diamond edged blade, but manufactured at a fraction of the cost. The ophthalmic surgical blades can be used for cataract and refractive surgical procedures, as well as microsurgical, biological and non-medical, non-biological purposes. | 01-08-2009 |
| 20100212166 | Hydro-tension releasing knife blade - A surface friction reducing and hydro-tension releasing knife blade having a cutting edge, a back edge, a first side, an opposing second side and a tip. A plurality of spacedly arrayed protrusions on the first side and on the opposing second side between the cutting edge and back edge provide a plurality of spacedly arrayed inclined ramps from the planar blade side to a crest that separate the item cut from the blade side to reduce surface friction and to relieve hydro-tension. | 08-26-2010 |
| 20100251554 | KNIFE ASSEMBLY - A knife assembly is formed by a blade provided for cutting an object and a handle provided for holding a knife. Small grooves are engraved on a surface of the blade and disposed equidistantly from each other on a small section of the surface of the blade, and upper and lower ends of the grooves are extended to a knife back and a blade edge, such that if the knife is used for cutting an object, an airflow is produced outside the surface of the blade, and thus the cut object will not be attached or adhered onto the surface of the blade, so as to achieve the effect of completing the cutting operation smoothly and successfully. | 10-07-2010 |
| 20100325902 | METHOD OF MANUFACTURING OF CUTTING KNIVES USING DIRECT METAL DEPOSITION - Direct metal deposition (DMD) is used to fabricate knife edges with extended service life. A metal alloy powder is deposited along a blank and melted with a laser beam so that the powder solidifies into a strip of material having a hardness and/or wear resistance greater than that of the starting material. The piece is then finished to produce a sharp edge in the solidified material. The powder may be melted while it is being deposited, or it may be melted after being deposited. A slot or groove may be formed in the blank with the metal alloy powder being deposited into the slot or groove. A hardened steel alloy powder is deposited onto a mild steel blank. For example, a tool steel or vanadium steel powder may be deposited onto a 1018 steel blank. An invention line-beam nozzle may be used for deposition and/or powder melting. | 12-30-2010 |
| 20120198707 | Cutlery Implement with Release Bumps - A cutlery implement has a blade with opposed side surfaces and a knife edge along one terminal edge of the blade. One or more bumps protrude from at least one or both of the opposed side surfaces and are arranged along the blade and spaced from the knife edge | 08-09-2012 |
| 20130205603 | CHISEL - A chisel according to the present technology has a reduced tendency to jam in a substrate. The chisel is on an axis in the striking direction with successively a striking surface, a shank, a spreading element and a tip. The spreading element has multiple ribs around the axis extending along the axis | 08-15-2013 |
| 20140317940 | Anti-Stick Knife Blade - An anti-stick kitchen knife blade consisting of a plurality of channels or scallops formed into the blade sides which begin at the top of the blade, along the spine of the blade, and continue towards the sharp edge of the blade, thereby providing an uninterrupted source of air between the knife blade sides and the material being cut. The channels or scallops end before reaching the blade edge. However, the air which is allowed to move within the scallops or channels helps to prevent a vacuum suction from being formed between the blade sides and the material during the action of cutting, regardless of the thickness of the material. This is especially effective for cutting moist materials such as fruits, vegetables and meats. | 10-30-2014 |
