End Pivot Patents (Class 30/331)
  • Patent number: 10051794
    Abstract: Grafting tools for use in agriculture, nurseries, or horticulture, that ensure the sterile cutting of the plant during grafting operations and that prevent the spreading of diseases through the blade, are described.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: August 21, 2018
    Assignee: CENTRO SEIA S.R.L. SOCIETA' AGRICOLA
    Inventor: Filippo Marcellino
  • Patent number: 9101095
    Abstract: A pole saw includes a long handle with cast end adapter, a cast saw-holding component pivoted to the end adapter for movement between an extended use position and a handle-adjacent storage position, and a saw blade pivoted to the holding component for movement between a blade-use position and a blade-protected position. The end adapter and holding component are cast aluminum for strength and light weight, and are pivoted together about an offset axis so that the blade and blade-holding component are positioned adjacent the handle in a partially protected position that is very compact; thus, no disassembly or separate tools are required. A folding lock mechanism includes a hook and pressure pad that cooperate for secure locking in the extended use position. An adjustable set screw eliminates blade looseness when in the use position.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: August 11, 2015
    Inventor: Todd Pringnitz
  • Patent number: 8978257
    Abstract: A utility knife employing a blade having multiple cutting portions, and a housing for quickly and simply swapping out one cutting portion for another. In a preferred embodiment, a six-cutting-portion featured blade is employed. Each point of the six-cutting-portion featured blade features two distinct cutting portions, for a total of six cutting portions located on a single blade. The blade can be rotated about a central axis to expose new cutting portions as old portions wear and dull. In another embodiment, a single-edged blade featuring two cutting faces is housed in a knife handle. The blade can be flipped when the first portion is dull or worn to expose a second cutting face. The handle may optionally include a storage space for storing additional blades.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: March 17, 2015
    Inventors: Elwood Dean Quimby, Hubert J. Bung, Jeremy E. Weinman
  • Patent number: 8950077
    Abstract: A utility knife employing a blade having multiple cutting portions, and a housing for quickly and simply swapping out one cutting portion for another. In a preferred embodiment, a six-cutting-portion featured blade is employed. Each point of the six-cutting-portion featured blade features two distinct cutting portions, for a total of six cutting portions located on a single blade. The blade can be rotated about a central axis to expose new cutting portions as old portions wear and dull. In another embodiment, a single-edged blade featuring two cutting faces is housed in a knife handle. The blade can be flipped when the first edge is dull or worn to expose a second cutting face. The handle may optionally include a storage space for storing additional blades.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: February 10, 2015
    Inventors: Elwood Dean Quimby, Hubert J. Bung, Jeremy E. Weinman
  • Patent number: 8069569
    Abstract: A handle for a utility knife includes a housing made up of two or more portions. In one embodiment, a manually operable member for use in releasing the blade is retained to at least one portion of the housing and does not become separated from the housing when the housing is in an open state. In another embodiment, a catch for engaging the blade extends from a support member that is slidably movable within the housing. In another embodiment, the housing is formed of metal and a nose portion is formed of a metal that is more wear resistant than the rest of the housing, in order to improve the durability of the nose portion.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: December 6, 2011
    Assignee: Irwin Industrial Tool Company
    Inventors: Donald A. Brown, Kevin Fleury, William B. Korb, Norman LeBlane, Steven R. Levine, Corey M. Talbel
  • Patent number: 7930830
    Abstract: An improved scraping tool with a retractable safety guard, for removing debris and dirt from glass, tile and the like. The scraping tool comprises a housing formed of two separable housing portions and a guard member, and is adapted to securely retain a single- or double-edged blade between the housing portions. The separable housing portions are removably secured and held in sealed alignment by a plurality of securing elements, including a releasable housing lock mechanism. Within the housing, a scraping blade is held in a rigid, stationary position by a plurality of posts. A guard member, the ends of which form a pair of upper and lower blade shields, is positioned and secured in sliding engagement within the housing.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: April 26, 2011
    Assignee: Allway Tools, Inc.
    Inventors: Donald Gringer, Yuan Fang Cheng
  • Patent number: 7716839
    Abstract: A knife is provided including a first side and a second side where the first side may be removably coupled to the second side. The knife further includes a blade removably secured to the handle and rotatable about a pivot point between an open position and a closed position. A manually-releasable fastening device disposed on the handle is adapted to secure the first side to the second side and to secure the blade to the handle, while remaining attached to the handle.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: May 18, 2010
    Assignee: KAI U.S.A., Ltd.
    Inventors: Kenneth J. Onion, Craig Green
  • Patent number: 7637015
    Abstract: A utility knife system for cutting objects The utility knife system has an external handle, an internal housing assembly, and a retracting and latching assembly slidable within the internal housing assembly. The internal housing assembly has a base featuring support ridges to come in contact with the external housing when in a closed position, a sliding track adjacent the base, and at least one latching notch. A hinge is provided for pivotally connecting the external handle to the internal housing. The retracting and latching assembly is receivable within the sliding track of the internal housing and is removably engageable with the latching notch of the internal housing assembly. The retracting and latching assembly is adapted to removably retain a cutting blade and retract the cutting blade in and out from the internal housing assembly.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: December 29, 2009
    Inventor: Robert F. Biolchini, Jr.
  • Patent number: 7596867
    Abstract: A utility knife system for cutting objects The utility knife system has an external handle, a retractable sheath, a retracting mechanism, and an internal housing. The external handle has a sheath sliding track running longitudinally therein and a hinge. The retractable sheath has at least one protrusion that corresponds to the shape of the sheath sliding track, slides within the external handle. The retracting mechanism moves the retractable sheath and locks it in a desired position. The internal housing is received within the retractable sheath and the external handle, and has a hinge attachable to the hinge of the external handle, and a blade retention end opposite of the hinge. The blade retention end receives a cutting blade.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: October 6, 2009
    Inventor: Robert F. Biolchini, Jr.
  • Patent number: 7370421
    Abstract: A knife is provided including a first side and a second side where the first side may be removably coupled to the second side. The knife further may include a blade removably secured to the handle and rotatable about a pivot point between an open position and a closed position. A manually-releasable fastening device disposed on the handle may be adapted to secure the first side to the second side and to secure the blade to the handle.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: May 13, 2008
    Assignee: Kai U.S.A., Ltd.
    Inventors: Kenneth J. Onion, Craig Green
  • Patent number: 7356928
    Abstract: A utility knife has a protective guard that moves from a locked position to an unlocked position. Preferred mechanisms utilize a pawl that cooperates with a stop to reduce movement of the guard while the guard is in a locked position, and a simple latching mechanism that allows the pawl to bypass the stop. The pawl is disposed with respect to other elements of the mechanism such that the blade guard can only pulled back to a retracted position after operation of a trigger or other actuator, and then only for a single use. Both the stop and the catch can advantageously be carried in a fixed special relation to one another by operation of a trigger or other actuator.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: April 15, 2008
    Assignee: Earl J. & Kimberly Votolato Trustees of the Votolato Living Trust
    Inventor: Earl J. Votolato
  • Patent number: 7325314
    Abstract: A handsaw includes a handle, a blade removably mounted on the handle, and a press button pivotally mounted on the handle and detachably engaged with the blade to lock the blade on the handle and unlock the blade from the handle. Thus, the blade can be detached from the handle easily and rapidly by pressing the pressing portion of the press button, thereby facilitating the user replacing the blade. In addition, the concave face of the blade is rested on the convex face of the handle, so that the blade is supported by the handle rigidly and stably, thereby facilitating a user operating the handsaw.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: February 5, 2008
    Assignee: King Jaws Metal Co., Ltd.
    Inventor: Yu-Heng Chen
  • Patent number: 7162803
    Abstract: A foldable tool retainer capable of updating the tool easily comprises an upper casing sheet; an upper pad; a work tool; a lower pad; a resisting sheet; and a lower casing sheet. When updating the work tool, it is only necessary to press the upper button to drive a buckling end of the upper control sheet to separate from the edge of a rotary shaft of the resisting sheet so that the lower pad can rotate around the ratchet shaft of the lower casing sheet again and the rotary shaft moves out of the notch of the upper pad. Then other components are detached along a sequence of actions reversing to the assembly process.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: January 16, 2007
    Inventor: Chen Dung Lu
  • Patent number: 7065885
    Abstract: A handsaw includes a handle, a blade, and a locking member. Thus, the user only needs to drive the drive lever of the locking member to detach the snapping hook of the locking member from the snapping groove of the handle so as to detach the blade from the handle, so that the blade is detached from the handle easily, rapidly and conveniently, thereby facilitating the user mounting and replacing the blade.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: June 27, 2006
    Assignee: King Jaws Metal Co., Ltd.
    Inventor: Yu-Heng Chen
  • Patent number: 6968622
    Abstract: A utility knife having a handle and a blade holder which is pivotally mounted on the handle for movement from an unfolded position to a folded position. The handle has a space adapted to receive the blade holder when the blade holder is in its folded position. The blade holder includes a main wall and guard wall pivotally mounted on the main wall to pivot from an open position to a closed position overlying the main wall. The main wall being adapted to hold a blade so that a blade is interposed between the main wall and guard wall when the guard wall is in its closed position.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: November 29, 2005
    Assignee: Great Neck Saw Manufacturers, Inc.
    Inventor: Qiu Jian Ping
  • Patent number: 6857348
    Abstract: An arrangement for clamping a saw blade (12) includes a retaining member (6) on which a blade (12) for clamping can be mounted. The retaining member (6) is lockable in at least two positions such that each of the two positions clamps the blade (12) at a predetermined angle relative to a shaft (2) which drives the saw blade (12).
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: February 22, 2005
    Assignee: Black & Decker Inc.
    Inventor: Neil Mason
  • Patent number: 6701626
    Abstract: A hand tool has an elongated blade having a longitudinally inwardly projecting tang having a longitudinal back edge formed with a plurality of transversely directed teeth, a longitudinal front edge, and an elastically transversely deflectable retaining formation. A handle forms a longitudinally open seat having one longitudinally extending side wall. A retaining lever has an edge formed with teeth and an elastically transversely deflectable retaining formation. The lever is displaceable between a closed holding position with the lever teeth meshing with the blade teeth and pressing the blade against the seat wall and the formation transversely engaging and bearing elastically against the blade retaining formation, and an open freeing position with the lever teeth out of mesh with the blade teeth and the formation out of engagement with the blade retaining formation.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 9, 2004
    Assignee: Lagos GmbH
    Inventor: Heinz-Peter Knoop
  • Publication number: 20030177643
    Abstract: A hand tool for deburring is provided, as well as a cutting blade to be inserted into the tool, the tool comprising a housing, and a rotatable holding device, the holding device being positioned in and being rotatable in the housing and having a chamber for releasably holding a cutting blade, the chamber running obliquely to the axis of rotation (z) of the holding device.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 25, 2003
    Applicant: NOGA ENGINEERING, LTD.
    Inventor: Shalom Hirsch
  • Patent number: 6553671
    Abstract: The present invention is an improved folding knife having a handle with opposing first and second sides and a rotatable blade coupled with the handle and moveable between a locked position at which the blade extends from the handle and an unlocked position. A slot is defined in the blade. A locking bar is coupled with the first side of the handle and has a free end biased toward the blade. The free end of the locking bar is received within the slot when the blade is in the locked position. An actuator member is disposed within the slot and is moveable with respect to the sides of the handle when the blade is in the locked position. The free end of the locking bar is forced from the slot of the handle when the actuator member is moved toward the first side of the handle so that the blade is rotatable to the unlocked position.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: April 29, 2003
    Inventor: Gary R. Blanchard
  • Patent number: 6516525
    Abstract: A handsaw includes a handle, a saw blade pivotally attached to the handle and a position device movably mounted in the handle to selectively hold the saw blade in place. The handle and the saw blade form an angle that is adjustable because the saw blade is pivotally attached to the handle and selectively positioned by the position device.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: February 11, 2003
    Inventor: Chin-Pao Liu
  • Patent number: 6508003
    Abstract: An adapter is provided for removably coupling a saw, including a tang portion having an aperture formed therein, to a tool. The adapter includes a base member and a clip pivotally coupled to the base member. The base member has first and second ends, and first and second surfaces extending between therebetween. An opening is formed in the first and second surfaces of the base member, proximate the first end. The opening is adapted to receive an axle of the tool. The base member further includes a slot formed in the first surface and a projection extending in to the slot. The slot is adapted to receive the tang portion of the saw, and a projection is adapted to be received in the aperture to align the saw with the base member. The pivotally coupled clip is movable between a closed position, in which the saw is retained in and secured to the base member, and an open position, in which the saw is removable from the base member.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: January 21, 2003
    Assignee: Alterra Holdings Corporation
    Inventors: Bradford J. Parrish, Edgar A. Dallas
  • Publication number: 20020096032
    Abstract: The object of the invention is a cutter with a monoblock blade carrier with securement and release of the blade by pressure, characterized in that said blade carrier (1) is made by molding from a semi-rigid plastic material and comprises two substantially flat shells (1a, 1b) folded facing each other, connected by a thin bridge (2) and defining between them a recess for the reception of a blade (3) open at least on its sides, one of the portions (1a) comprising on its internal surface a projection (10) adapted to penetrate a hole (5) in the blade (3) so as to trap it in said recess (8, 8a) and being, adjacent this latter, deformable by pressure (P) so that, by a lever effect, said projection (10) moves away from the opposite surface of the other shell (1b), thereby permitting the free passage of the blade (3) outside its recess (8, 8a).
    Type: Application
    Filed: November 26, 2001
    Publication date: July 25, 2002
    Inventors: Jean-Claude Peyrot, Marc Michiels
  • Patent number: 6131292
    Abstract: A utility knife has two shells that are pivoted or hinged to each other at one end to permit opening the knife handle formed by the shells for insertion or replacement of a knife blade. The two shells are interlocked with each other by a latching mechanism, including a stationary section in one shell and a rotatable section in the other shell. The rotatable section has a spring elastic bail that engages the stationary section and an operating member for disengaging or engaging the rotatable member from the stationary stop bar. In the interlocking position the operating member is recessed in a recess in the surface of one of the shells. When the knife is used, the operator's hand provides additional safety by keeping the operating member in its recess and thus the two shells interlocked.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: October 17, 2000
    Assignee: Reddig GmbH
    Inventor: Bernd Reddig
  • Patent number: 6105260
    Abstract: An adapter is provided for removably coupling a saw, including a tang portion having an aperture formed therein, to a tool. The adapter includes a base member and a clip pivotally coupled to the base member. The base member has first and second ends, and first and second surfaces extending between therebetween. An opening is formed in the first and second surfaces of the base member, proximate the first end. The opening is adapted to receive an axle of the tool. The base member further includes a slot formed in the first surface and a projection extending in to the slot. The slot is adapted to receive the tang portion of the saw, and a projection is adapted to be received in the aperture to align the saw with the base member. The pivotally coupled clip is movable between a closed position, in which the saw is retained in and secured to the base member, and an open position, in which the saw is removable from the base member.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: August 22, 2000
    Assignee: Alterra Holdings Corporation
    Inventors: Bradford J. Parrish, Edgar A. Dallas
  • Patent number: 5979065
    Abstract: A handle assembly includes a handle body formed with a longitudinal blade receiving space, a coupling member mounted on the handle body within the blade receiving space and confining an insert slit aligned and communicated with the blade receiving space, and a locking unit extending movably and transversely through the handle body and having wider and narrower sections. The locking unit extends through the coupling member to permit pivoting of the coupling member relative to the handle body. The insert slit is adapted to permit extension of a saw blade thereinto via a front opening of the coupling member. The locking pin is movable between an unlocking position, in which the narrower section is registered with the insert slit to permit movement of the locking unit into and out of a locking hole of the saw blade, and a locking position, in which the wider section is registered with the insert slit for engaging the locking hole of the saw blade.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: November 9, 1999
    Inventor: An-Sun Hsu
  • Patent number: 5940970
    Abstract: A utility knife includes a holder having two mating halves which combine to develop a first cavity located at a proximal end of the holder, for receiving a blade for active use, and a second cavity located toward a distal end of the holder, for receiving a supply of replacement blades. The two mating halves are joined by a hinge located at the distal end of the holder, and a closure in the form of a captive screw extending between the mating halves at a position between the first cavity and the second cavity. Both the first cavity and the second cavity incorporate a magnet for directly engaging the active blade, and for additionally engaging one or more stored replacement blades.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: August 24, 1999
    Assignee: Le-Jo Enterprises, Inc.
    Inventors: Dominic D'Ambro, Sr., Fred Griste, Gordon Milligan
  • Patent number: 5930902
    Abstract: A saw includes an elongated saw blade having a rear end portion which is formed with a hooked extension and a locking hole having a restricted entrance. The handle member has left and right side walls which confine a blade receiving space therebetween, and an insert slit for access into the blade receiving space. A pivot shaft extends transversely between the left and right side walls. The rear end portion of the saw blade is extendible into the blade receiving space via the insert slit so that the hooked extension hooks pivotally with the pivot shaft. A locking pin extends movably and transversely between the left and right side walls, and has a wider section with a cross-section larger than the restricted entrance but smaller than the locking hole, and a narrower section with a cross-section smaller than the restricted entrance.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: August 3, 1999
    Inventor: An-Sun Hsu
  • Patent number: 5864952
    Abstract: A knife for woodworking, which is convenient for a user to dispose a blade thereinto, is disclosed. The knife includes a first casing and a second casing. The two casings are pivotedly joined at one end thereof . The first casing has an insert mounted therein. The insert defines a slot thereon. The second casing has a fitting member extending from an inner face thereof and through the slot of the insert. By urging the insert, the fitting member will be interlocked with the periphery of the slot so that the first casing is engaged with the second casing. By releasing the insert, the first casing and the second casing will open to facilitate a disposition of the blade, without separating the pivoted joint thereof.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: February 2, 1999
    Assignee: Lutz File & Tool Company
    Inventor: Yen-chao Chung
  • Patent number: 5797188
    Abstract: A hand-held utility knife (20) has two handle portions (22, 23) hinged together at the rear end (26) of the handle (21) by means of two lugs (36, 37) of one handle portion (22) projecting into two recesses or cavities (38, 39) of the other handle portion (23) and retained therein behind two lips (53a, 53b) except when almost closed together, when the two handle portions (22, 23) can be separated and reconnected. In order to prevent inadvertent separation of the two handle portions (22, 23) at their rear ends (24, 25) when the handle is closed and the clamping device (27) is screwed up tight, the lugs (36, 37) have abutment portions (61, 62) which engage abutments (65, 66) inside the two recesses or cavities (38, 39). The abutments (61, 62, 65, 66) are positioned on one side of the hinging axis (34) so that they move apart when the handle (21) is opened. Hence the abutments (61, 62, 65, 66) do not interfere with the hinging of the handle portions (22, 23) nor with their separation and reconnection.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: August 25, 1998
    Assignee: The Stanley Works Limited
    Inventor: Richard Gilbert
  • Patent number: 5769094
    Abstract: A folding knife having a cantilevered leaf spring member with an engagement tab at the free end thereof. The engagement tab engages with a notch defined in a pivoting blade carrier pivotally connected to the knife handle member. Carried within the blade carrier is an interchangeable blade insert. When the blade is moved to an extended position, it is automatically locked in that position through engagement of the engagement tab with the notch in the blade carrier. Retraction of the blade requires pulling upwardly on ears provided adjacent the engagement tab to remove the engagement tab from the notch, such that the blade can be pivoted into a blade compartment provided in the handle member.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: June 23, 1998
    Inventors: R. B. Jenkins, Jr., Walter W. Collins
  • Patent number: 5414933
    Abstract: The present invention is directed to a letter opening device comprising an elongated tubular handle, a removable tubular cap and a generally L-shaped cutting guide including a cutting blade and a blade holder. The cutting guide is affixed to the forward end of the tubular handle and has an elongated nose portion which is adapted to fit underneath the flap of an envelope to be opened. The elongated nose portion has an elongated groove for receiving the sharp tip of the cutting blade. The blade holder is pivotally mounted to the cutting guide and can be moved to easily replace the blade. An elongated safety shield is slidably mounted inside the tubular handle for shielding the blade when the letter opening device is not in use. The shield has an actuating member attached thereto for moving the shield within the tubular handle.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: May 16, 1995
    Inventor: Ted V. Garner
  • Patent number: 5355584
    Abstract: A hose cutting device comprises an upper seat and a lower seat. The upper seat is provided with a cutting tool and two connection portions, each of which has a retaining slot. The lower seat is provided with a cutting tool receiver corresponding in location to the cutting tool of the upper seat, and with two connection portions, each of which has a projection dimensioned to be received and retained in the retaining slot of the upper seat at such time when the upper seat and the lower seat are caused by hand to move in opposite directions to close on a hose to be cut.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: October 18, 1994
    Assignee: Taiwan Shin-Lin Company Ltd.
    Inventor: Chih-Chieh Huang
  • Patent number: 5353505
    Abstract: A pair of grip scissors comprises a generally U-shaped spring member integrally made of a resin and a pair of blade members attached to the respective free ends of the spring member. The respective free ends of the spring member are provided with an opposed pair of stoppers bulging toward each other. The respective stoppers come into stopping abutment with each other when the spring member is manually gripped. Each stopper has a mounting side face directed away from the mounting side face of the other stopper, and each blade member has a connecting portion attached laterally to the mounting side face of the corresponding stopper.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Clover Mfg. Co., Ltd.
    Inventor: Hidekazu Okada
  • Patent number: 5331739
    Abstract: Disposable nail cutting nippers including a body member having a one piece construction to provide first and second gripping portions pivoted about a front hinge portion to be adjacent to each other, and a removable cutting member having cutting blades disposed at the front end portions of the gripping portions. A spring hinge is disposed between the rear end portions of the gripping portions to tension the gripping portions into an open position so that the cutting blades are spaced apart, the gripping portions being squeezed together against the tension of the spring hinge to place the cutting blades in a closed cutting position. Ridges are provided transversely around a periphery of matching central portions of the gripping portions to facilitate the gripping of the body member. A slot is provided in the front hinge portion to removably receive the cutting member therein. The spring hinge includes a tab member having a centrally located, transverse bend therein.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: July 26, 1994
    Inventor: Lea Basangy
  • Patent number: 5153995
    Abstract: This invention relates to a folding knife including a blade having a heel pivotally mounted onto an intermediate member made of plastic or composite material, provided with a blade-spring co-operating with the blade heel, and inserted, then stuck within a recess provided in one end of a wooden handle.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: October 13, 1992
    Assignee: Etablissements Joseph Opinel & Cie
    Inventor: Denis M. J. Opinel
  • Patent number: 5131149
    Abstract: A blade pivots on its tang into and out of a slot in a blade carrier. The carrier, in turn, slides in a handle between two positions. In the first position, the blade is prevented from pivoting out of the carrier by contact with the handle but in the second position the blade is free to rotate out of the slot to an extended configuration. The user slides the carrier between the two positions with a spring loaded button in the side of the handle.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: July 21, 1992
    Assignee: Lynn C. Thompson
    Inventors: Lynn C. Thompson, Denis Lemaire
  • Patent number: 5092045
    Abstract: A locking mechanism (39) comprising a rectangularly-shaped block (40) seated in a corresponding opening (41) of a blade (31) and a corresponding opening of a handle scale (32). Block (40) depresses into opening (41) after which blade (31) is free to rotate between locked open and closed modes, effecting two-position lock mechanism. Other embodiments include a stepped blocks (61, 81) by which two or one notches are utilized to effect either a two-position or one-position lock mechanism, respectively. These blocks register in their respective openings (42, 73, 89) provided in handle scale. The register in the opening (89) in the scale for the one-position lock mechanism is off-set in a direction towards the center of rotation for the blade (31).
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: March 3, 1992
    Inventors: Francis M. Boyd, Jr., Frank M. Boyd, Sr.
  • Patent number: 5062210
    Abstract: A cutter for removing thorns from cactus is disclosed including a fork shaped member having a pair of prongs pivotably connected together at one end and having tabs at free ends received in traverse slots in a conventional wafer type razor blade. A tie member holds the prongs in a spacing to flex the razor blade into a concavo convex shape with the convex surface facing outwardly from the free ends of the cutting edge of the blade perpendicular to the plane of the prongs.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: November 5, 1991
    Inventor: Jose C. Arroyo, Jr.
  • Patent number: 5036591
    Abstract: This invention relates to utility knives used to cut various items, including cartons, cardboard, string and wallpaper. Specifically, the invention provides a disposable one-piece razor blade utility knife in which the blade is adjustable yet permanently affixed to the knife handle. When the complementary shells of the handle are open, the blade may be placed in a usable position in which the cutting edge will protrude out of the handle when the shells of the knife are later closed or in a safety position in which the blade will be fully retained in the handle when the knife is closed.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: August 6, 1991
    Inventor: Morison Cousins
  • Patent number: 5031322
    Abstract: A utility knife having a main body formed from a pair of body halves which are assembled together. The main body has an opening at the front with means to prevent the pair of body halves from spreading apart and with means to prevent the blade from swaying from side to side. In addition, means are provided to hold the body halves together without the necessity of using special tools or fastening means.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: July 16, 1991
    Assignee: Great Neck Saw Manufacturers, Inc.
    Inventor: Daniel Jacoff
  • Patent number: 4947551
    Abstract: A laterally foldable knife which includes a locking member slidably engageable with the blade to lock the blade into either its extended or retracted position. The locking member includes protrusions one of which is wedged between the blade proximal end and handle to lock the blade in its extended position. The other locking member protrusion is restrictively fitted within a blade proximal end notch to lock the blade in its closed position. A spring biases the lock member toward the knife blade proximal end.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: August 14, 1990
    Inventor: David Deisch
  • Patent number: 4936014
    Abstract: A utility knife comprises a hollow casing formed by a pair of elongated members pivotally mounted one to the other at one end of the casing. A blade passage is provided at another end of the casing. The elongated members are adapted for movement in substantially parallel planes between aligned closed functional and open diverging positions. The casing is provided with a mechanism adapted to carry and selectively position a blade. The utility knife further comprises a locking member pivotally mounted to one of the elongated members and adapted in a closed position thereof to secure the elongated members in their aligned closed position.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: June 26, 1990
    Assignee: Johnson Level and Tool (Canada) Inc.
    Inventors: Gad Shaanan, Imre Grosz, Serge Provost
  • Patent number: 4926554
    Abstract: A clasp knife has a pivotally mounted blade which can be swung between an operative extended position and a shrouded position within a body and handle using only one hand. The knife incorporates an actuating lever carrying a latching dog which locks the blade to the lever when the blade and the body are swung from the closed position to the open position while a release member is in a locking position. When the body is swung to the extended position while the release member is in the release position, the latching dog is released from the blade and the blade is detained in the body as the body is swung back to the inoperative closed position.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: May 22, 1990
    Assignee: Charles L. Martin
    Inventor: Wayne C. Martin
  • Patent number: 4777725
    Abstract: There are disclosed a blade-holder capable of holding two different deburring blades and a deburring tool utilizing the blade-holder. The blade-holder comprises of a rod, two longitudinal bores, one at each end of the rod and releasable locking means situated in the regions of the longitudinal bores.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: October 18, 1988
    Assignee: Noga Engineering Ltd.
    Inventor: Gustav Hirsch
  • Patent number: 4604805
    Abstract: A holder for a detachable blade has a handle part and a blade retaining part formed by a pair of body sections pivotally connected for movement between open and closed positions. A latch member supported within the hollow handle part, and which retains the body sections in closed position, is released by manually operating an associated push button disposed in an aperture in the handle part. Coengageable clamping surfaces on the blade retaining part cooperate in clamping engagement to retain a blade in the holder when the holder is closed. A thumb rest on the blade retaining part reduces risk of accidental contact with a blade secured in the holder.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: August 12, 1986
    Assignee: John F. Cuscovitch
    Inventor: George H. Krieger
  • Patent number: 4571829
    Abstract: A blade tensioning device for a hacksaw or the like. A generally conventional hacksaw is provided with a plate in one leg of the frame, and the blade receiving pin is on the plate. A toggle joint is arranged to rotate the plate to move the pin and loosen the saw blade or to rotate the plate to move the pin and tension the blade. When the blade is tensioned, the toggle joint locks to hold the blade in tension. The frame has a bezel to fit over the end of the blade when the blade is in tension to prevent lateral movement of the blade. The opposite frame member may include an adjustable link to adjust for saw blade length or slight frame bending.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: February 25, 1986
    Inventor: Ernest A. Withers, Jr.
  • Patent number: 4536959
    Abstract: A folding knife including a blade and a handle which are joined together by a pivot at a forward end of the handle, an axis of the pivot is in the same plane as the blade and the handle and joins same to a tang portion of the blade so that the blade can pivot laterally from an extended position through about 180.degree. to a second position where the blade lies within the confines of the handle. The top and/or bottom of the tang is generally rectangular in section and engages in a similarly shaped recess formed in upper and/or bottom arms of the handle, the upper and/or bottom arms of the handle incorporate a mechanism for moving the arms apart to enable the tang to be disengaged from the recess to swing the blade laterally either to its open or closed position. The top of the tang can have locking surfaces associated therewith which engage with a recess in the arm of the handle adjacent thereto to lock the blade in its open or closed position.
    Type: Grant
    Filed: October 12, 1982
    Date of Patent: August 27, 1985
    Assignees: Mark Anthony Ross, Robert Allen Hiseman
    Inventor: Mark A. Ross
  • Patent number: 4261104
    Abstract: A holder for detachable, apertured blades has two body sections connected intermediate the ends thereof for pivotal movement between open and closed positions. A blade received within a recess at one end of one of the body sections, when the holder is in open position, is retained on a projection which extends through and beyond the recess at the one end. A latching member mounted in fixed position on the other of the sections cooperates with the projection to interlock the blade in the holder when the body sections are pivoted to closed position. A detent at the free end of the handle portion of the holder releasably retains the two body sections in closed position.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: April 14, 1981
    Inventor: John F. Cuscovitch
  • Patent number: 4240202
    Abstract: A retractable blade knife 10 comprises an elongate handle 11 which is in two halves 14, 15 clamping therebetween a replaceable blade 12 which can be extended and retracted by means of a cursor 18 and which has "break-lines" 32 for breaking off successive end portions 33. To clamp the blade 12 firmly in use, a screw 27 at the rear end of the handle can be turned to produce relative longitudinal sliding between the two handle halves 14, 15, whereupon an inclined "wedging" surface 17 at the front end of the handle 11 clamps the two halves 14 and 15 together with the blade 12 between them.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: December 23, 1980
    Assignee: Stanley Tools Limited
    Inventor: Richard Gilbert
  • Patent number: 4169312
    Abstract: A knife accommodating interchangeable blades. The knife includes a blade having a tang extending from its base, and an elongate handle having a front, blade-receiving region and an opposed back region. An elongate lever having opposed pivot and locking points is attached at its pivot point in the back region of the handle for swinging toward and away from a locked position in which the lever is axially aligned with the handle. The lever provides, adjacent its pivot point, a cammed surface dimensioned to engage a spring arm within the handle, thus to lock the lever in its locked position. The blade tang is securely held within a cavity defined in part by the locking point of the lever, with the latter in locked position.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: October 2, 1979
    Inventor: Alfred C. Mar