Detachable Cutting Edge Patents (Class 30/349)
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Patent number: 11716982Abstract: A fishing tool includes a main body and a holding assembly coupled to the main body. The holding assembly includes a bottom holding jaw and a top holding jaw rotatably coupled to the bottom holding jaw and movable relative to the bottom holding jaw between an open holding position and a closed holding position to selectively hold a fish hook in place. The holding assembly is rotatable relative to the main body and configured to be secured relative to the main body in a fixed number of positions.Type: GrantFiled: February 2, 2018Date of Patent: August 8, 2023Assignee: FISKARS BRANDS, INC.Inventors: Hal Hardinge, Keith Langenwalter, Charlie Hartzell, Seth Jaramus
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Patent number: 11565435Abstract: The modular cutter assembly for cutting composite material and for use in a composite placement machine wherein the cutter assembly includes a base and a cutting member. The cutting member being removably attachable to the base by a mechanical connection.Type: GrantFiled: January 14, 2019Date of Patent: January 31, 2023Assignee: CRAFTSTECH, INC.Inventors: Jeffrey C. Roberts, Thomas Kuhl, Rakesh N. Patel
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Patent number: 11534930Abstract: The present application discloses a blade mechanism and an electric scissors having the blade mechanism. The blade mechanism includes a setting blade, a moving blade, and a rotating shaft assembly. The rotating shaft assembly respectively passes through the setting blade and the moving blade to allow the setting blade and the moving blade being rotatablely connected. The cutting edge of the moving blade is automatically ground when the moving blade frictionally rotates relative to the setting blade. According to the present application, the moving blade and the setting blade of the blade mechanism open or close to generate friction, allowing the cutting edge of the moving blade to be automatically ground by the setting blade, thus the durability of the moving blade is improved.Type: GrantFiled: June 10, 2020Date of Patent: December 27, 2022Assignee: YONGKANG WEIDE INDUSTRY AND TRADE CO., LTD.Inventor: Huahua Lu
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Patent number: 10850414Abstract: A sheet material processing device 3 for performing processing on a having-been-conveyed sheet material along a direction perpendicular to the conveyance direction of the sheet material, includes: a blade member 4 including an upper blade part 42 and a lower blade part 41 that extend in the perpendicular direction and then pressing both blade parts 41 and 42 to each other so as to perform predetermined processing on the sheet material located between both blade parts; a pressing mechanism 5 for pressing both blade parts to each other; and a moving mechanism 6 for moving the blade member in the perpendicular direction, wherein in the upper blade part 42, a processing blade 421 is formed at one or more sites in the perpendicular direction, and wherein in the lower blade part 41, a receiving part for the processing blade is formed over the section facing the processing blade 421.Type: GrantFiled: May 20, 2016Date of Patent: December 1, 2020Assignee: DUPLO SEIKO CORPORATIONInventor: Hideki Oiwa
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Patent number: 10245738Abstract: Embodiments of the present invention provide a pair of sampling scissors and a method for using the sampling scissors. With the sampling scissors and the method, a sample of a rubbing cloth for testing may be obtained in a single operation, and damage to the rubbing cloth during the sampling process is thus decreased, so that the rubbing cloth will meet the requirement of uniformity of rubbing alignment.Type: GrantFiled: July 15, 2015Date of Patent: April 2, 2019Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Jie Zhang
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Patent number: 9840019Abstract: A blade and assembly provides for a blade that has a front beveled cutting edge and at least two recesses defined within the back, or non-cutting edge, of the blade. A substantially cylindrical cavity or bore extends inwardly into the blade from each recess, the bores being defined in planes that are parallel to the top and bottom surfaces of the blade. A plurality of “T-shaped” legs is provided, each leg having a cross bar or “foot” that is secured at one end of a rod. In the preferred embodiment, three such legs are used, although the present invention is not limited to that number. The rod of each leg is used for insertion into a blade bore. Means for fixing the position of the rod within the blade bore is also provided. This allows the blade to be properly positioned within the holder thereby compensating for blade wear.Type: GrantFiled: October 24, 2014Date of Patent: December 12, 2017Assignee: THE KINETIC CO., INC.Inventors: Runyon McClain Tolliver, Paul Edward Lewandowski
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Patent number: 9333570Abstract: A piercing tip assembly has two piercing tips, each having two sets of piercing and shearing edges. The tip is reversible so that the tip can be detached from the shears, its orientation changed, and replaced on the shears so a fresh, sharp set of piercing and shearing edges is exposed during use. The tips are reverse by rotating each tip and replacing the tip mounted on the right side of the jaw, and switching the tip on the left side of the jaw to the right side, and the tip on the right side of the jaw to the left side. The piercing tip assembly protects a substantial portion of the upper jaw of a metal shears from wear.Type: GrantFiled: September 27, 2007Date of Patent: May 10, 2016Assignee: Caterpillar Inc.Inventors: John Kevin Clemons, Jeffrey R. Peterson, John M. Stamey
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Patent number: 8898911Abstract: A cutting tool utilizing a replaceable blade has a body which defines a blade-accepting pocket having an interior within which the body of the blade is nestingly accepted when inserted within the pocket and for releasable securement of the blade within the blade-accepting pocket. Furthermore, the blade-accepting pocket includes an abutment surface against which a surface of the blade body bears against when the cutting edge of the blade is moved into cutting engagement with an item being cut with the tool.Type: GrantFiled: April 28, 2011Date of Patent: December 2, 2014Assignee: iTool Equipment Holding LLCInventors: David S. Jordan, Michael C. Jordan
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Publication number: 20120255181Abstract: The invention features an indexable wear plate/piercing tip insert that is configured to be removably and repositionably attached to the front, nose portion of the upper, movable jaw of a metal demolition shears. The insert functions as both a wear plate and a piercing tip and is indexable in that a non-worn or less worn portion of the wear surface of the wear plate portion of the insert, and non-worn shearing and piercing edges of the piercing tip portion of the insert, can be presented simultaneously simply by rotating the insert 180° and reattaching it to the nose portion of the upper, movable jaw of a metal demolition shears.Type: ApplicationFiled: June 22, 2012Publication date: October 11, 2012Applicant: STANLEY BLACK & DECKER, INC.Inventors: Karl Johnson, Louis Maggio, Clayton Sederberg
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Patent number: 8257148Abstract: A grinding head of a grinder is provided with a knife assembly that includes a knife holder with a number of arms, each having a knife insert slot, for receiving a matching number of knife inserts. The knife inserts have a blade or cutting edge and a bottom edge. The bottom edge, rather than being a straight edge, is shaped to define a pair of bearing portions that fit within the slot of the knife holder arm and allow the knife insert to be firmly retained in the slot. A recessed area is located between the bearing portions. The recessed area accommodates any imperfections in the floor of the insert slot, and provides a void area within which any material contained within the slot can be received when the knife insert is engaged within the slot.Type: GrantFiled: January 6, 2009Date of Patent: September 4, 2012Assignee: Reliance Controls CorporationInventors: E. William Wight, Christopher E. Albrecht
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Patent number: 8162784Abstract: A survival tool and system for use in hunting or camping may be provided in a compact and easy to carry package. The tool system may include a substantially rigid base with an outer edge and a substantially flat face. A relief may be provided in the substantially rigid base defining one or more edged tools in the substantially flat face. Applying pressure to the edged tool may cause the tool to separate from the substantially rigid base. The edged tools may be in the shape of an arrowhead or other utility element. One or more secondary tools may be incorporated into the outer edge, including a knife blade, a saw blade, an arrow scraper, a flat scraper and a bow rail. An elastic element may be fastened to the base and used to launch a projectile such as an arrow. One or more bases may be sized to fit in a common sized “tin” or similar in size to a dog tag and may be carried around the neck of a user. A sheath may also be provided to cover one or more of the outer edges.Type: GrantFiled: June 9, 2010Date of Patent: April 24, 2012Inventor: Philip E. Bellefeuille
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Publication number: 20110185580Abstract: A power operated rotary knife having a large diameter, annular rotary knife blade and interfitting blade housing wherein the rotary knife blade includes notched bearing race providing for an enhanced or enlarged area of bearing contact between the blade bearing race and the corresponding blade housing bearing structure. The enhanced area of bearing contact is offset radially inwardly of and axially from a radial outer surface of a drive gear region of the blade thereby reducing wear on the radial outer surface of the blade drive gear region.Type: ApplicationFiled: February 1, 2010Publication date: August 4, 2011Applicant: Bettcher Industries, Inc.Inventor: Jeffrey A. Whited
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Patent number: 7930831Abstract: The invention relates to a scraper blade assembly structure. The scraper includes a stem for hand grip and a scraping section in the front. The scraping section includes a jaw plate, a blade and a fastening button. The jaw plate extends backward to form an arm. The jaw plate is attached to the inside of the jaw plate groove of the scraping section by a fastener that also serves as a lever pivot for swinging back and forth. When a fastening button goes into the inside of the jaw plate of the scraping section, it pushes the inner side of the arm of the jaw plate, and so as to generate a great holding power for the front of the jaw plate. Further, the fastening button can be a handle protruding from one side of the scraping section.Type: GrantFiled: August 6, 2008Date of Patent: April 26, 2011Inventor: Wen-Chen Lin
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Publication number: 20100071216Abstract: A utility knife blade comprising a blade body defining a first side, a second side opposite the first side, a back edge and a cutting edge opposite the back edge. The cutting edge includes a plurality of serrated portions and substantially non-serrated portions. The blade further defines two opposing lateral edges extending between the back edge and the cutting edge. A plurality of score lines laterally spaced relative to each other along the cutting edge extend across at least one of the first and second sides of the blade between the cutting edge and the back edge, the score lines defining a plurality of blade segments therebetween. The score lines extend between the non-serrated portions of the cutting edge and the back edge so that the serrated portions avoid contact with the score lines to facilitate the breaking off of each cutting segment when desired.Type: ApplicationFiled: September 22, 2008Publication date: March 25, 2010Inventor: Joseph Thomas NOVAK
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Patent number: 7634859Abstract: A press device to be modified such that profile rods can also be removed by a shearing movement. The tool is configured so that a cutting plate can be fixed to each pivoting arm and is displaceably mounted in the opposite pivoting arm. The clamping arms of the pivoting arms have a fork-shaped slit and the cutting plates are maintained in the clamping arms with fixing bolts.Type: GrantFiled: November 24, 2003Date of Patent: December 22, 2009Assignee: Von Arx AGInventor: René Amherd
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Patent number: 7284330Abstract: A cutting device for rod-shaped workpieces has two actuating levers each in the form of a two-arm pivot lever. The two-arm pivot levers each have a first arm as an actuator and a second arm having a shearing edge. The actuators move the shearing edges relative to one another. The pivot levers each have an end face. The end faces rest against one another in the shearing position. The second arms each have a detachable cutting insert, and the shearing edges are arranged on the cutting inserts. The actuators can be engaged by a drive device for pivoting the actuators in opposite direction relative to one another.Type: GrantFiled: March 18, 2004Date of Patent: October 23, 2007Assignee: REMS-WERK Christian Föll und Söhne GmbH & Co.Inventor: Rudolf Wagner
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Patent number: 7270041Abstract: A device for cutting flat substances, such as paper, photographs and cardboard, adapted to provide a variety of decorative edged cuts. The cutting edges of the invention are arranged horizontally to enhance not only the quality and continuity of the decorative cuts, but also a user's ability to safely operate the invention. Cutting edges are optionally replaceable and can be stored in specially adapted holders located on the underside of the base plate cutting surface.Type: GrantFiled: September 10, 2004Date of Patent: September 18, 2007Inventors: James B. Cox, David M Johnson
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Patent number: 7210388Abstract: A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant is disclosed. The saw band includes a support band with from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of silicon, from 0.5 to 1.8% of manganese, from 0.1 to 3.5% of molybdenum, from 1.0 to 5.0% of chromium, from 0.5 to 1.5% of nickel, from 0.1 to 1.0% of copper, from 0.1 to 2.0% of tungsten, from 0.1 to 0.5% of vanadium, from 0.01 to 0.30% of niobium and/or tantalum and less than 0.2% of cobalt, and the remainder iron including melting-related impurities, with the tungsten, vanadium and niobium/tantalum contents matched to one another. The saw includes hardmetal tips including at least 75% of tungsten carbide and 5 to 15% of cobalt, as well as grain stabilizers with a grain size of less than 5 ?m.Type: GrantFiled: January 23, 2003Date of Patent: May 1, 2007Assignee: Stahlwerk Ergste Westig GmbHInventors: Oskar Pacher, Werner Lenoir
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Patent number: 7082686Abstract: An angled shank blade for a carpet or tile stripping machine with a flat bottomed blade for engaging the surface of a floor. The leading edge of the blade having an angle of about 20 degrees, followed by a tapered top surface portion and a rear portion. An angled blade head attached to the rear portion and angled upward at about 20 degrees. A shank attached to the blade at an angle of about 20 degrees for receiving the weight of the floor stripping machine and keeping the blade parallel to the floor while lifting the flooring material over the leading edge, the tapered portion, the blade head and shank smoothly and efficiently without binding. The blade may have a carbide insert for long lasting skiving of material from the floor.Type: GrantFiled: November 3, 2004Date of Patent: August 1, 2006Inventor: Martin L. Anderson
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Patent number: 7080453Abstract: Manual cutting tools for cutting cables, steel cord, rods to size, the cutting tools including a stationary cutting part connected to a stationary handle, and a movable cutting part adapted to be moved against the stationary cutting part by a movable handle via a transmission. Each of the stationary and movable cutting parts has associated therewith a concavely shaped replaceable cutting element mounted in a floating fashion.Type: GrantFiled: March 15, 2004Date of Patent: July 25, 2006Assignee: Laux Industrie GmbHInventor: Steffen Laux
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Publication number: 20040031160Abstract: A multiple receptacle blade holder tool including an elongated rectangular cross section main body with one end being rounded and having multiple rectangular receptacles for blades. The blade holder also has top and bottom surfaces parallel to the blade receptacles and a relief channel forming independent legs that clamp one or more blades in the holder.Type: ApplicationFiled: August 19, 2002Publication date: February 19, 2004Inventor: Joseph H. Timidaiski
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Publication number: 20030140502Abstract: An interchangeable blade scissors assembly is provided. The interchangeable blade scissors assembly has a pair of scissors frame members each having a blade receiving portion and a handle, a pivot connection of the pair of scissors frame members, and a plurality of pairs of cutting blades. Each of the cutting blades has a mounting plate and a latch. Each of the blade receiving portions has a channel for receiving the cutting blade mounting plate and a latch receiving area for securing the cutting blade to the blade receiving portions. The cutting blades are easily removed from the blade receiving portions by telescopic movement along the channel.Type: ApplicationFiled: November 13, 2002Publication date: July 31, 2003Applicant: ACME United CorporationInventors: Christopher Aiston, David Carpenter
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Patent number: 6581293Abstract: A pair of hole punching pliers, so-called stoma pliers, is arranged to punch a hole in a skin protection plate for a stoma bag. The hole punching remedies of the pliers consist of a hole socket (16) and a holding-up plate (18) for the same. During the punching, a plastic skin protection plate is located between the hole socket (16) and the opposing surface of the holding-up plate (18), as the free, outer cutting/punching edge (22) of the hole socket (16) after the completion of the punching abuts directly on said opposing holding-up plate surface.Type: GrantFiled: January 18, 2002Date of Patent: June 24, 2003Inventor: Svein Jakob Andersen
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Patent number: 6574868Abstract: A knife having a handle component and a blade component, the blade component comprising a pair of opposed flanking side members and a replaceable blade insert confined and held therebetween. The side members are joined together by a blade insert locator and a spacer element at the region of connection to the handle so as to provide a slot forward of the handle for inserting the replaceable blade. The blade insert is configured to engage the blade insert locator and the spacer element so as to be held in the slot completely within the confines of the blade component. A blade insert locking structure is mounted on the blade component so as to be structurally and functionally independent of the handle component. The handle component and blade component may be of either the fixed or folding type and the blade insert may include a gut hook on its terminal end.Type: GrantFiled: March 1, 2000Date of Patent: June 10, 2003Inventor: Steven D Overholt
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Patent number: 6487887Abstract: A working apparatus for band blade provided with a bender for bending a band blade into a predetermined configuration, and a cutter cutting the band blade. The cutter is positioned successively after the bender. And, a working method for band blade having a bending process in which a band blade is bent into a predetermined configuration, and a cutting process in which the band blade is cut. The cutting process is successively conducted after the bending process is previously conducted.Type: GrantFiled: February 26, 2001Date of Patent: December 3, 2002Assignee: Suntex Co., Ltd.Inventor: Toshio Yamada
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Patent number: 6263581Abstract: A knurled handle grip hunting knife for field use with a hinged foldable blade holder to which may be attached replaceable blades by an attachment lever which attaches to a hooked replaceable blade allowing the hunter to easily replace blades in the field and conveniently store the knife when not in use and retrieve for use when needed.Type: GrantFiled: March 19, 1998Date of Patent: July 24, 2001Inventor: Philip Forte
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Patent number: 6260280Abstract: A knife with ceramic blade including a body portion having a lower end. The lower end has a generally triangular lower portion extending downwardly therefrom. The lower portion has a lower end forming an apex. The apex has a channel formed therein extending a length of the body portion. A plurality of ceramic blades are provided that each have an elongated vertical upper segment and a lower cutting edge. The elongated vertical upper segment of each ceramic blade is received within the channel formed in the apex of the lower portion of the elongated body portion.Type: GrantFiled: February 11, 2000Date of Patent: July 17, 2001Inventor: Keith Rapisardi
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Patent number: 6105262Abstract: A knife and a reversible blade are described. A handle provides a blade mount for an elongated blade having opposed longitudinally overlapping first and second cutting edges. Handle mounting surfaces are provided on the blade, interchangeably engageable with the blade mount to enable selective attachment of the blade to the handle with either first or second cutting edges thereof exposed in an operational position.Type: GrantFiled: March 31, 1998Date of Patent: August 22, 2000Inventor: Thomas A. Rickard
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Patent number: 6058611Abstract: A knife is described including a handle with a blade mount. An elongated blade with a handle mounting surface is releasably engageable with the blade mount on the handle to enable selective attachment and detachment of the blade to and from the handle. The blade mount includes a blade back configured to receive a length of the blade and a tang disposed within the handle. A blade release is formed integrally with the tang and includes an integral elongated bar spring extending longitudinally within the handle from an end joined integrally with the tang, to a laterally movable free end. A blade lock is located on the elongated bar spring adjacent the movable free end, laterally positionable by deflection of the elongated bar spring to selectively engage and lock the blade in an extended operative position, and a release position clear of the blade.Type: GrantFiled: April 8, 1999Date of Patent: May 9, 2000Inventor: Thomas A. Rickard
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Patent number: 5621974Abstract: A cutting implement such as of the scissors type is disclosed herein, having a pair of elongated shanks pivoted together midway between their opposite ends so that opposing blade cutting edges converge together as the shanks are closed towards one another. The cutting edges are carried on an exposed edge marginal region of either permanent or replaceable blades disposed into open receptacles on the respective shanks. Each shank receptacle is defined by sloping surfaces at the opposite ends of each receptacle and a pair of stepped posts is provided in spaced apart relationship between the opposite opening ends. A replaceable blade is formed with a plurality of recesses along the edge opposite to the cutting edge leading into longitudinal slots whereby the shank posts are indexed or registered with the blade recesses for snap-lock retention therewith into the slots with the blade seated on the post steps. A permanent blade is provided with shaped holes for placement on the steps of the posts.Type: GrantFiled: September 27, 1995Date of Patent: April 22, 1997Assignee: Anthony W. Rose, Jr.Inventors: Anthony T. Rose, Theresa M. Rose
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Patent number: 5592742Abstract: A cutting edge arrangement comprising multiple cutting plates, each plate having opposing planar surfaces and a cutting edge along one side, said plates joined together along facing planar surfaces, the cutting edges aligned parallel to each other and slightly offset in a direction perpendicular to the cutting edges, wherein said plates may be removed one by one to maintain a sharp cutting edge.Type: GrantFiled: March 13, 1995Date of Patent: January 14, 1997Inventor: Toshio Okamura
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Patent number: 5355585Abstract: The scissors are provided with replaceable thin insert blades. The blade insert carriers of the scissors are recessed to receive the blade inserts fixed in place by a screw. The edge-to-edge force at the cutting point is controlled by the bend and the twist of the blade insert carriers. The fixation of the blade inserts by the screw in the front half of the blade insert carriers and their twist in the back section, leaves the cutting edge of the blade inserts unsupported near the pivot point of the scissors. Torsion of the blade inserts allows for easier control of the edge-to-edge force near the pivot without a penalty of the high edge-to-edge compliance towards the tips. Use of replaceable blade inserts eliminates the need for resharpening of the cutting edge and allows for use of the special purpose blade inserts with the same basic scissors.Type: GrantFiled: January 12, 1994Date of Patent: October 18, 1994Assignee: AO-Forschungsinstitut DavosInventor: Slobodan Tepic
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Patent number: 5197194Abstract: A hand tool comprising two cooperating members each having a handle and interconnecting arrangement for interconnecting the members in mutually overlapping relationship so as to permit movement of the members relative to one another by the handles.At least one of the cooperating members is provided with a receiving unit adapted to movably receive a blade. The receiving unit is defined by at least an interior part thereof.The blade comprises an elongated body having first and second cutting portions spaced from each other by a central portion. The first cutting portion is defined by at least a first cutting edge and a first rear portion. The second cutting portion is defined by at least a second cutting edge and a second rear portion.The blade is positioned within the receiving unit of the cooperating member in such a manner that the first cutting edge faces the other cooperating member and the second cutting edge faces the interior part of the receiving unit.Type: GrantFiled: March 31, 1992Date of Patent: March 30, 1993Inventors: Joseph A. Sorensen, Anthony B. Fuller
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Patent number: 5157837Abstract: A cutting implement of the scissors type is disclosed herein having a pair of elongated shanks pivoted together midway between their opposite ends so that opposing cutting edges converge together as the shanks are closed towards one another. The cutting edges are carried on an exposed edge marginal region of replaceable blades insertably disposed into open receptacles on the respective shanks. Each shank receptacle is defined by sloping surfaces at the opposite ends of each receptacle and a pair of posts is provided in spaced relationship between the opposite opening ends. The blade is formed with a plurality of recesses along the edge opposite to the cutting edge leading into longitudinal slots whereby the shank posts are indexed or registered with the blade recesses for snap-lock retention therewith into the slots.Type: GrantFiled: December 27, 1990Date of Patent: October 27, 1992Inventor: Anthony T. Rose
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Patent number: 5094003Abstract: A long handled tool having a blade member at one end having a leading undercutting knife edge to sever from a web a broken end portion thereof which is wrapped about a drying roller and having an adjacent portion of the blade having an extended tapered curved terminal portion, the knife edge being inserted between layers of the web wrapped about the roller and the roller itself, moving the blade member along the roller the width of the web severing the web and then moving the blade member to one side of the cut to engage the wrapped portion of the web with the curved terminal portion to pull the broken web off of the roller.Type: GrantFiled: June 3, 1991Date of Patent: March 10, 1992Inventor: Albert J. Schwab
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Patent number: 5026375Abstract: A bone-cutting surgical implement, commonly called a rongeur, has a pistol-like grip with a finger controlled lever in pivotal engagement with the handle. Extending from the handle is a rod defining an upward facing, longitudinal keyway. The rod also has an upwardly angularly protruding jaw facing backward along the rod. A second rod is in slidable engagement with the first rod by a key disposed in the keyway. The arrangement constrains the slidable rod to rectilinear motion along the first rod. At an extremity of the slidable rod proximal to the handle, the slidable rod is pivotally connected to the lever. By moving the lever an operator is able to move the slidable rod along the fixed rod. A replaceable, disposable jaw is releasably coupled to a distal extremity of the slidable rod and faces the end jaw of the first rod. The replaceable jaw is also guided by the keyway defined by the first rod.Type: GrantFiled: October 25, 1989Date of Patent: June 25, 1991Assignee: Origin Medsystems, Inc.Inventors: Raymond J. Linovitz, Randy J. Kesten
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Patent number: 5018347Abstract: An apparatus wherein an elongate lawn mower blade body includes a forwardly extending flange and a rearwardly extending flange, wherein each flange includes a slot extending along the flange spaced from an end edge surface of the cutting blade a predetermined distance. A polymeric replacement blade, including a "T" shaped projection directed rearwardly of the blade, is receivable within the slot, wherein the blade includes a top and bottom surface aligned with a respective top and bottom surface of the associated blade body. Modifications of the invention include metallic reinforcement cast within the blade and optionally utilizing an "S" shaped blade to position the blade underlying the blade body.Type: GrantFiled: May 7, 1990Date of Patent: May 28, 1991Inventor: Michael A. Feilen
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Patent number: 4896424Abstract: A new composite cutting blade for a knife or other cutting instrument and a novel method of making the blade. The blade is formed from a body section made of a strong tough material formed with a dovetail configuration along one edge thereof and a cutting edge section made of a hard durable material that has a matching dovetail configuraion along one edge. The body and cutting edge sections are joined by press fitting the two dovetail edges together and then peening the joint. The blade is provided with a recess so that when the blade is rotated into the handle that includes a unique locking means, the blade is retained in a closed position. The handle includes a liner that has a spring finger which engages the tang of the blade to lock the blade in an open position. The spring finger also has a ball detent mounted thereon that engages the recess in the blade when the blade is in a closed position so as to retain the blade in a tightly closed position.Type: GrantFiled: January 13, 1989Date of Patent: January 30, 1990Inventor: Michael L. Walker
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Patent number: 4890388Abstract: A cutting implement of the scissors type is disclosed herein, having a pair of elongated shanks pivoted together midway between their opposite ends so that opposing cutting edges converge together as the shanks are closed towards one another. The cutting edges are carried on an exposed edge marginal region of replaceable blades insertably disposed into open receptacles on the respective shanks. Each shank receptacle is defined by sloping surfaces at the opposite ends of each receptacle and a pair of posts is provided in spaced relationship between the opposite opening ends. The blade is formed with a plurality of recesses along the edge opposite to the cutting edge leading into longitudinal slots whereby the shank posts are indexed or registered with the blade recesses for snap-lock retention therewith into the slots.Type: GrantFiled: October 5, 1988Date of Patent: January 2, 1990Inventor: Anthony T. Rose
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Patent number: 4712364Abstract: A quick attachable and detachable mower blade assembly comprising a blade member and blade holder member having flat adjoining surfaces and fixed to the lower end of a vertical drive shaft. A pair of studs are fixed to and project from one of the members through stud openings in the other of the members. The latter openings have an enlarged portion for passing the head of the studs and a narrow portion extending from the enlarged portion to an end conforming to the shape and dimension of the shank of the respective stud. The narrow portions of the openings are located and directed so that the studs, when seated in the respective ends, prevent axial and angular movement between the blade member and the blade holder member. The blade holder member and blade member have, in addition, a central opening which receives a downwardly biased pin extending from the lower end of the drive shaft.Type: GrantFiled: June 30, 1986Date of Patent: December 15, 1987Assignee: Deere & CompanyInventor: Lonnie R. Oxley
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Patent number: 4574673Abstract: A stiffened elongated cutting blade for use in a cutting apparatus of the type employing an elongated cantilevered cutting blade for cutting layups of fabric or other similar sheet material, and reciprocated along its longitudinal axis when actively cutting. The blade is a compound part made up of an inexpensive, reversible and replaceable edge member insert which provides the cutting edge and an associated holder supporting the insert for substantially its entire length along its rear edge and serving to reduce lateral and rearward deflections. The insert is held in the holder by a mechanical interfit between the insert and holder at its lower end and in mechanical engagement with the holder at its upper end and is easily releasable from the holder to allow its reversibility and replacement after the cutting edge has dulled or worn beyond a desireable point.Type: GrantFiled: March 25, 1985Date of Patent: March 11, 1986Inventor: David R. Pearl
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Patent number: 4310999Abstract: A rotary blade for a pruning machine which comprises a flexible disc made from a high molecular weight elastomeric material, said disc having a plurality of blades projecting radially from the periphery of said disc and a mounting hole disposed in the center of said disc.Type: GrantFiled: July 17, 1979Date of Patent: January 19, 1982Assignee: Sanny Industry Co., Ltd.Inventor: Toshikatsu Onoue
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Patent number: 4249306Abstract: According to the disclosure there is provided a continuously sharp erasing knife by a thin, hardened steel strip honed along at least one edge being given a special form with the aid of a dispenser, allowing the honed edge to be applied to a substructure for erasure in an effective cutting or scraping attitude. The strip is provided with weak zones and can be successively advanced from the dispenser so that end pieces which have become blunt can be broken off. At the same time, the dispenser forms a storage container for these broken-off pieces.Type: GrantFiled: September 10, 1979Date of Patent: February 10, 1981Inventor: Bengt A. Benson
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Patent number: 4193189Abstract: A scissors comprising first and second pivotably connected arms, each including a finger engaging portion and a remote tip portion. Each arm is constituted in entirety of a plastic material and has a recessed seat in which a metal blade is mounted. The blade is removably mounted in the seat by engagement of a hole in the blade with a corresponding projection on each arm in the respective seat from the bottom surface thereof. The projection is of truncated conical shape and the hole in the blade is sized and shaped to engage the respective projection and enable removal of the blade by the elasticity of the plastic material of the projection.Type: GrantFiled: July 17, 1978Date of Patent: March 18, 1980Inventor: Sergio Marin
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Patent number: 3986260Abstract: A cutting system utilizes a cutting blade-holding base that removably holds a number of long razor cutting blades in a corresponding number of longitudinal slots. A replaceable blade knife of the cutting system has a cutting blade-gripping member with a bifurcated lower region extending throughout its length and dimensioned for resiliently gripping one of the long razor blades. The blades are placed within the blade-gripping member of the cutting knife by placing the heel end portion of the bifurcated region over the razor blade at this point and then angling downward so that the remainder of the bifurcated region resiliently grips the cutting blade throughout its entire length. The cutting blade-holding base also serves to store the knife with its cutting blade by insertion of the blade into an empty slot of the base.Type: GrantFiled: April 23, 1975Date of Patent: October 19, 1976Inventor: Carlton L. Whiteford
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Patent number: 3946778Abstract: Apparatus is described for the fastening of two or more planar structures. Specifically described is a saw which has a removable cutting edge and handle. The cutting edge fastening means includes mating chamfered surfaces as well as tensioned pin-in-slot retainers. The handle is retained by a pin-in-slot constraint coupled with having a saw handle groove tightly accommodate the saw body edge.This invention relates generally to improvements in joining together substantially rigid coplanar bodies, and more particularly to providing a saw with an improved removable blade and handle.Type: GrantFiled: February 10, 1975Date of Patent: March 30, 1976Inventor: Eugene W. Knuth