Apertured Blade Patents (Class 30/339)
  • Patent number: 10492817
    Abstract: An endoscopic surgical blade is disclosed. The blade is part of an endoscopic knife assembly which also has a knife tube and alignment ring. The endoscopic knife assembly is for use in endoscopic surgery by insertion of the assembly though a slotted cannula. The knife tube is hollow and allows the insertion of an endoscope for viewing of the surgical procedure. The blade has an upper and a lower cutting surface on the forward edge, which meet at an angle at a crotch.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: December 3, 2019
    Assignee: A.M. SURGICAL, INC.
    Inventors: Ather Mirza, Romi Mirza
  • Patent number: 10478218
    Abstract: A scalpel holder, having a grip piece with a longitudinal direction and a blade holder which is connected to the grip piece and which functions to receive a scalpel blade and hold the same fixed, wherein the grip piece has a slider guide which runs substantially in the longitudinal direction of the grip piece for the purpose of receiving a slider, wherein the same can be movably guided in said slider guide toward the blade holder, and the slider guide is arranged on the grip piece in such a manner that the end piece, the same designed with a wedge shape, of the slider which is guided in the slider guide in the direction of the blade holder slides past the scalpel blade while lifting the same out of the blade holder.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: November 19, 2019
    Assignee: HELMUT ZEPF MEDIZINTECHNIK GMBH
    Inventor: Frank Wendenburg
  • Patent number: 10285729
    Abstract: A finger-held instrument (25) having a handle (10) supporting a working tip (11, 31) on a mount (15) located at an end of the handle that is held proximate a working surface (43) during use, said handle being characterized by a projection (20) supported by or on said portion proximate the working tip and being dimensioned and shaped for supporting or shielding a user's finger (26a, 27a, 29a) and for exerting a contact force on the working surface so as to allow fine control of the working tip during use.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 14, 2019
    Assignee: SCALPAL LLC
    Inventors: Eliot Robert Gitman, Tuvia Gitman
  • Patent number: 10195725
    Abstract: This invention discloses a rotary clamping mechanism comprising a cylinder, a rotary member, and a clamping member, wherein the rotary member and the clamping member have shapes that gradually change; the rotary member comprises a first board, a second board, a first connection member, and a second connection member; a wall groove is arranged at the lower side of the inner wall of the cylinder; the rotary member and the clamping member can rotate in the cylinder to contract and compress.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: February 5, 2019
    Assignee: SHANGHAI EASY-USE TOOLS ENTERPRISE CO., LTD
    Inventor: Shiyu Sun
  • Patent number: 9445811
    Abstract: A surgical instrument for surgically joining tissue includes a handle assembly, an elongate member extending distally from the handle assembly, an end effector disposed adjacent a distal portion of the elongate member, and an actuation assembly operatively associated with the handle assembly. The actuation mechanism includes a thrust bar disposed at least partially within the elongate member and a distal slide member. The thrust bar has a proximal portion, a distal portion, a first lateral side and a second lateral side and is configured to move between proximal and distal positions with respect to the handle assembly. The distal slide member is positioned adjacent the first lateral side of the thrust bar and is adjacent the distal portion of the thrust bar. The proximal portion of the distal slide member is adapted to slide relative to the thrust bar when thrust bar moves in a curvilinear direction.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: September 20, 2016
    Assignee: Covidien LP
    Inventor: David Farascioni
  • Patent number: 9346183
    Abstract: A tool clamping device, in particular an oscillating tool clamping device, includes a clamping unit that has at least one clamping element configured to securely clamp a working tool in an axial direction and at least one clamping head arranged on the clamping element and configured to clamp the working tool at a free end of the clamping unit. The clamping unit further includes a guiding unit configured to guide at least one movement of the working tool along at least one direction of movement that deviates significantly from the axial direction in at least one operating state.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: May 24, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Marcel Fankhauser, Bruno Luescher
  • Patent number: 9320651
    Abstract: A surgical knife handle comprising a handle body (102) and a blade receiving portion (104) defined at a first end of the handle body, which blade receiving portion comprises a blade receiving bore and a blade support (118) extending to a first side of the blade receiving bore. A surgical knife comprising a handle, a blade defined at a first end of the handle and a blade support extending to a first side of the blade.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 26, 2016
    Assignees: Core Surgical Limited, e-Medix Limited
    Inventors: Richard Packard, Simon Checkley, Ian Hutchinson
  • Patent number: 9192367
    Abstract: A surgical access device including a frame, first and second supports, and first and second retractor blades releasably coupled with the first and second supports, respectively. The frame has first and second arms. The first support is releasably coupled with the first and second arms. The second support is slidably mounted on the first and second arms. The second support is movable between a first position with the retractor blades in close cooperative position and a spaced apart position with respect to the first support. The first and second retractor blades each have a distal end portion configured and adapted to engage a vertebral body. In one method of use, the retractor is inserted through an incision in first orientation with the blades in close approximation and rotated approximately 90°, before spreading the retractor blades to retract tissue.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: November 24, 2015
    Assignee: K2M, Inc.
    Inventors: Pierce Nunley, Colin Natali, Faheem Sandhu, Ronald Childs, Brandon Moore
  • Patent number: 9061410
    Abstract: The present disclosure provides a power tool having a clamping device for a working element. The power tool includes an output shaft, a fastening piece having a flange portion for clamping the working element and a protruding shaft substantially perpendicular to the flange portion. A locking assembly comprising a locking member having a first position in which the protruding shaft is locked and a second position in which the protruding shaft is loosened is provided, wherein a pressing member can press the working element between the pressing member and the flange portion when the locking member is in the first position. The power tool can fasten the working element to the output shaft in a simple and reliable manner without the necessary use of such auxiliary tools as a spanner etc. and can achieve a stronger clamping force even under impact conditions.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 23, 2015
    Assignee: Chervon (HK) Limited
    Inventors: Hongtao Zhou, Guigong Ni
  • Patent number: 8984755
    Abstract: A retractable knife includes a handle and a utility blade having a first side and a second side. The retractable knife further includes a blade holder comprising a first plate and a second plate configured to cover at least a portion of said first and second sides of said utility blade, and for supporting said utility blade. The blade holder may be telescopically movable relative to said handle between an extended position and a retracted position, and wherein the blade holder extends out from the handle in said extended position. A blade release member may be mounted on the blade holder.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: March 24, 2015
    Assignee: Olympia Tools International, Inc.
    Inventor: Huang Yuan De
  • Patent number: 8960688
    Abstract: A power tool has a driving shaft driving a working element, a fastening piece fastening the working element to the driving shaft having a projecting shaft insertable into the driving shaft, a locking assembly locking the projecting shaft in the driving shaft having a locking member wherein the locking member has a locking position for locking the projecting shaft with the driving shaft and a loosening position for loosening the projecting shaft with the driving shaft. At the locking position, the fastening piece is pressed towards an end portion of the driving shaft by an elastic component. The locking assembly further includes a movable member arranged outside of the driving shaft, the movable member having a first portion and a second portion which can be directly or indirectly mated with the locking member wherein a radial distance of the first portion relative to a shaft center of the driving shaft is unequal to that of the second portion relative to the shaft center of the driving shaft.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 24, 2015
    Assignee: Chervon (HK) Limited
    Inventor: Hongtao Zhou
  • Patent number: 8931636
    Abstract: A blade exchange device may be used to remove or install a blade on a medical or surgical instrument such as a dermatome. The blade exchange device generally includes a base portion and a blade engaging portion that engages the blade being removed or installed. The blade exchange device may be used in a system that also includes a magnetic tool for coupling and moving the blades that are removed or installed. The blade exchange device, system and method may be used, for example, with commercially available dermatome instruments such as the type known as the Goulian-Weck knife.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: January 13, 2015
    Assignee: ATC Technologies, Inc.
    Inventors: Paul C. Kierce, Kenneth V Freeman
  • Patent number: 8925931
    Abstract: A clamp arrangement for releasably securing an accessory to an oscillating power tool can include a tool body including a motor that drives an output member. A clamp assembly can include a first clamp member that moves relative to the accessory between a closed position wherein the clamp assembly retains the accessory and an open position wherein the first clamp member of the clamp assembly is offset from the accessory permitting removal of the accessory from the clamp assembly. A lever can have a user engagement portion and a pivot portion including a pivot axle. The lever can be pivotally coupled to the tool body about the pivot axle between a first position, wherein the clamp assembly is in the closed position and a second position wherein movement of the user engagement portion of the lever causes the clamp assembly to be moved to the open position.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: January 6, 2015
    Assignee: Black & Decker Inc.
    Inventors: Oleksiy P. Sergyeyenko, Brent A. Kuehne, Kevin W. Covell, David A. Goldman, Mark D. Miller, Derek P. Vlcko
  • Patent number: 8914982
    Abstract: A quick release utility blade holder preferably includes a handle member and a retention clip. The handle member preferably includes a clip pocket, which is sized to receive the retention clip. A pair of opposed blade grooves are formed below a bottom of the clip pocket to slidably receive a utility knife blade. The retention clip includes a lift tab, a notch lock projection and a blade stop projection. The blade stop projection stops insertion of the utility knife blade. The notch lock projection is sized to be received by one of the notches in the utility knife blade. The lift tab extends from one end of the retention clip at one end of the handle member and one end of the clip pocket. The other end of the retention clip is secured to the handle member at the other end of the clip pocket with at least one fastener.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: December 23, 2014
    Inventor: Dell Skluzak
  • Patent number: 8915499
    Abstract: An accessory for coupling to an attachment mechanism of an oscillating power tool includes a working end, an opposite rear end, and a fitment portion adjacent the rear end portion. The fitment portion includes a generally U-shaped opening having a central portion and a rearward portion open to the rear end, and configured to receive a post of a tool clamping mechanism. The fitment portion further includes a first plurality of openings in communication with and extending radially outward from the central portion, a second plurality of openings not in communication with and positioned radially outward from the central portion. The central portion, the first plurality of openings, and the second plurality of openings are configured to couple the fitment portion to a plurality of different configurations of attachment mechanisms for oscillating power tools.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: December 23, 2014
    Assignee: Black & Decker Inc.
    Inventors: Thomas R. Kaye, Jr., James R. Niblett
  • Patent number: 8875611
    Abstract: A tool for parting, in particular for sawing, includes a carrier blade that has a toothing portion with a finite, geometrically determined toothing, and a receiver for fixing the carrier blade to a tool spindle of a power tool. The tool spindle can be driven in oscillation about its longitudinal axis. The toothing is disposed at a distance from the receiver and is configured to be advanced perpendicularly in relation to the longitudinal axis, such that the toothing is realized in a non-uniform manner along the toothing portion. The toothing portion has a middle region and end regions that adjoin the middle region and that are provided with strengthened corner teeth.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 4, 2014
    Assignee: C. & E. Fein GmbH
    Inventor: Rainer Mann
  • Patent number: 8827278
    Abstract: An adaptor for adapting a working element to an end of a power tool shaft. The adaptor includes a central hole passing through the adaptor and has a longitudinal axis, a driving end facing the end of the shaft, and a tool end facing the working element and having a protruding portion, wherein the driving end is provided with grooves, the grooves and bosses formed between the grooves are alternately arranged around the circumference of the driving end, and the bosses have side faces each facing the central hole and located on a plane passing through an edge of a regular polygon and parallel with the longitudinal axis. The adaptor can thus be used to adapt different kinds of working elements to various kinds of driving shafts having different shapes of shaft end.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: September 9, 2014
    Assignee: Chervon (HK) Limited
    Inventors: Zhiguo Chen, Xiaofeng Zhang, Baijun Zhang
  • Patent number: 8813372
    Abstract: A cutting tool clamp mechanism for a power tool includes a housing supported by a spindle, the spindle being configured to receive and drive a cutting tool. A clamping system is supported by the housing and a portion of the clamping system is movable relative to the spindle. The clamping system includes an actuator portion and an engaging portion coupled to the actuator portion. The clamping system has an engaged condition, in which the engaging portion is configured to secure the cutting tool to the spindle, and a released condition, in which the engaging portion is configured to disengage the cutting tool from the spindle. A biasing member positioned between the spindle and the clamping system biases the clamping system to the engaged condition. When the cutting tool is removed from the housing, the clamping system is configured to be held in the released condition, and upon insertion of the cutting tool into the housing, the clamping system moves from the released condition to the engaged condition.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: August 26, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventor: John S. Scott
  • Patent number: 8813373
    Abstract: A cutting tool clamp mechanism for a power tool includes a housing supported by a spindle, the spindle being configured to receive and drive a cutting tool along a longitudinal axis of the spindle. A clamping system is supported by the housing and includes an engaging portion movable relative to the spindle, the clamping system having an engaged condition, in which the engaging portion is engageable with the cutting tool to secure the cutting tool in the spindle, and a released condition, in which the engaging portion is disengageable with the cutting tool. A biasing member is positioned between the housing and the clamping system, and operable to bias the clamping system to the engaged condition. When the cutting tool is removed from the spindle, the clamping system is held in the released condition, and upon insertion of the cutting tool into the housing, the clamping system moves from the released condition to the engaged condition.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: August 26, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventor: John S. Scott
  • Publication number: 20140190018
    Abstract: A cutting tool (1), and a method of exchanging an interchangeable blade as well as a cutting tool housing, in particular for severing flat and/or strand-form materials. The cutting tool (1) includes a housing (2), at least one interchangeable blade (8) arranged at a holding portion (6) of the housing (2), and a locking member (40) arranged movably on the housing (2) for locking the blade (8) to the housing (2). The housing (2) has first positively locking elements (23, 24, 26, 28) and the locking member (40) has second positively locking elements (42) which jointly lock the blade (8) in a given position to the housing (2).
    Type: Application
    Filed: December 30, 2013
    Publication date: July 10, 2014
    Applicant: Martor KG
    Inventors: Florian Segler, Martin Rohrbach
  • Patent number: 8734450
    Abstract: There is provided a surgical saw blade for use in orthopaedic surgery. The saw blade comprising: a mounting cavity having a first substantially triangular-shaped opening and a second substantially triangular-shaped opening in communication with, and inverted relative to, the first opening, the first and second opening collectively define two mounting slots that form an angle relative to one another. In some embodiments, the planar portion further comprises an offset planar shelf. The offset shelf may be oriented along the length of the planar portion to allow for longitudinal reciprocation or may be oriented across the width of the planar portion to allow for lateral reciprocation.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: May 27, 2014
    Assignee: Smith & Nephew, Inc.
    Inventor: Ryan Lloyd Landon
  • Patent number: 8641049
    Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: February 4, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Marc Vincent Marini, Vance E. Roe, Matthew Carr, Gary Sinclair, Gavin Wright
  • Patent number: 8613144
    Abstract: A spatula having a body with a top working surface and a bottom surface is provided. The spatula body also includes a first end and a second end opposite to the first end. A handle is mounted to the first end of the body and the body has a first mounting member depending from the spatula body proximate the second end of the spatula body. The mounting member has an interior for receiving a mounting portion of the spatula blade and a second open end opposed to the first open end. The spatula body includes an opening in the body for cleaning the mounting member. A blade is provided for the spatula. The blade has a front section having a top surface and a bottom surface. At least a first spring tab extends rearwardly of the front section. The spring tab has a concave surface for one of its top and bottom surfaces.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 24, 2013
    Assignee: Restaurant Technology, Inc.
    Inventor: Sang Chun
  • Patent number: 8596453
    Abstract: The present invention is a scalpel blade removal device comprising an opening in a wall defining a first blade guide, extending to a narrowing upward ramp bounded by left and right guide walls. A horizontal top ramp extends from the distal end of the upward ramp, bounded by left and right guide towers. A spring loaded notch device is adapted to lock behind a proximal end of a scalpel blade seated on a scalpel, where the scalpel is inserted in the opening and the blade edge is driven up the ramp to the top ramp. When the notch device is locked behind that end of the scalpel blade, the scalpel is pulled back, causing the scalpel blade to slide off the scalpel handle. A sharps container incorporates the removal device, a reinforced latch, a scalpel resting location, and needle cover removers.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: December 3, 2013
    Inventors: Mike Hoftman, William Baer
  • Patent number: 8595941
    Abstract: An assisted-opening knife has a spring tied to a front of a blade carrier and a movable slider assembly within a slot formed through the blade carrier, so that a blade can be rapidly extended by the elastic force without going through stepwise movement. An expanded portion of the slot engaging the slider assembly allows the blade to be received in a holder and ejected only when the slider assembly fully disengages from the expanded portion, thereby generating no sudden ejection of the blade. Additionally, a safety latch securely locks the blade when the blade is fully retracted. When the blade is fully extended, a stopper engages the slider assembly to prevent the blade from being retracted during cutting and stabbing. Accordingly, the assisted-opening knife addresses a solution to rapidly extend the blade for cutting and stabbing without compromising the safety considerations.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: December 3, 2013
    Assignee: Taylor Brands, LLC
    Inventor: Ming-Tsan Lee
  • Patent number: 8572850
    Abstract: A carpet knife having a housing, an active blade installed in the housing, and a blade clamping means having a clamping cover and a thumb screw. The housing has a thumb screw hole, a pin hole, at least one side guiding groove, and an active blade installation bar. The clamping cover has at least one side guiding bar having a wedge outer surface, and a rear eccentric guiding groove. The thumb screw has a head having an under surface and a shank formed on the under surface. The head has a pin formed on the under surface thereof which is able to enter and move in the rear eccentric guiding groove.
    Type: Grant
    Filed: June 19, 2010
    Date of Patent: November 5, 2013
    Inventor: Yuewei Wu
  • Patent number: 8567072
    Abstract: A safety scalpel incorporating a handle similar in thickness, length, weight, balance, shape and feel to the conventional metal handle preferred by most surgeons, and a disposable cartridge assembly that is easily mounted and released from the scalpel handle. The handle comprises a first end and a second end. The cartridge assembly comprises a blade guard/shield that can be slideably mounted onto the second end of the handle, a blade holder/slider that can be disposed within the blade guard, and a blade that can be attached to the blade holder. The safety scalpel incorporates a locking system that prevents the cartridge assembly from sliding off or wobbling on the handle during use.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: October 29, 2013
    Assignee: Medipurpose PTE Ltd
    Inventors: Patrick Yi, George Hatzilias
  • Patent number: 8561304
    Abstract: A folding knife (or tool) having opposing handle halves and at least one knife blade (or tool) pivotally attached there between by an adjustable pivot. The adjustable pivot is configured to rigidly connect the opposing handle halves at the pivot point under load from fully tightened fasteners. The distance between opposing handle halves is both adjustable and rigidly fixable, resulting in improved assembly resistance to deflection from shear and torsion loads and reduced tendency of the blade (or tool) to loosen under hard use.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: October 22, 2013
    Inventor: Joseph Caswell
  • Patent number: 8549755
    Abstract: A compact utility knife includes a blade holder slidably connected to a handle. A trapezoidal utility blade detachably mounts to the blade holder via a blade lock mechanism. A slide lock mechanism selectively retains the blade holder in its extended or retracted position relative to the handle. When the blade holder is extended, the blade holder and a majority of the blade extend forwardly of a forwardmost point of the handle. Extending the blade holder significantly increases an overall length of the knife such that the knife is comfortable to use when in the extended position and longitudinally compact when in the retracted position. The knife includes a blade lock mechanism. An aperture in the front of the handle creates a gap between the blade and the handle to discourage debris on the blade from transferring to the handle when the blade is retracted.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: October 8, 2013
    Assignee: Stanley Black & Decker, Inc.
    Inventors: Eric Ranieri, Stephen Rowlay, Gary E. Van Deursen
  • Patent number: 8539680
    Abstract: A utility knife includes a first housing portion carrying one of a strike plate and a sliding nut assembly and a second housing portion carrying the other one of the strike plate and the sliding nut assembly. The sliding nut assembly includes a rotatable screw and a sliding nut. The sliding nut is movable between a first position where the sliding nut is positioned behind the strike plate and a second position where the sliding nut is positioned spaced from the strike plate. When the sliding nut is in the first position, the sliding nut engages the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: September 24, 2013
    Assignee: Irwin Industrial Tool Company
    Inventor: Ralf Strauss
  • Patent number: 8458915
    Abstract: A blade holder for smoothing and planing off a substrate comprising a handle, a receiving means including a receiving space for a blade, wherein the blade has a larger blade side surface and a narrow side which is at the rear in a cutting direction and which has a cutting edge, and a positioning aid for positioning the blade holder relative to the substrate, wherein the positioning aid includes a spacer device, by means of which the blade can be arranged in a spaced position in the receiving means in such a way that it can be positioned in spaced relationship with the substrate with its cutting edge for processing the substrate. A method and a blade for the blade holder are also provided.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 11, 2013
    Assignee: Mozart AG
    Inventor: Christoph Wahl
  • Patent number: 8413339
    Abstract: A knife having a body and a slide member slideable in the body. The slide member engages a blade assembly that is arranged to move with the slide member. The slide member is movable to position the blade assembly at a position of use and a release position wherein the blade assembly can be released from the slide member. The slide member is movable to retract the blade assembly into the knife body. The knife also includes an actuator member that can be actuated to move the slide member to a disengaged configuration wherein the blade assembly can be disengaged from the slide member to permit the release therefrom. The positioning of the blade assembly at the release position and subsequent movement of the slide member to the disengaged configuration by actuation of the actuator member releases the blade assembly from the slide member.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: April 9, 2013
    Assignee: Stanley Black & Decker, Inc.
    Inventors: Eric Ranieri, Stephen Rowlay, Brian Keers
  • Patent number: 8393625
    Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 12, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Marc Vincent Marini, Vance E. Roe, Matthew Carr, Gary Sinclair, Gavin Wright
  • Patent number: 8381407
    Abstract: An exchange blade knife includes a replaceable blade, a blade holder and a blade lock. The replaceable blade includes an opening adjacent to its base edge. The blade holder includes a blade recess for receiving the replaceable blade and a boss corresponding to the opening in the blade which projects from the surface of the blade recess. The boss has a low portion that is no thicker than the replaceable blade and a raised portion that extends above the surface of the replaceable blade. The blade lock pivots on the blade holder between an opened position for receiving the replaceable blade and a closed position for retaining the replaceable blade. The blade lock also includes an opening for receiving the boss of the blade holder.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: February 26, 2013
    Inventor: James Dale White
  • Patent number: 8327550
    Abstract: A jigsaw drive shaft is connected to a blade by the blade clamp of the present invention. The blade clamp comprises a clamp body mounted securely to the drive shaft by a bracket. The clamp body has a hollow portion formed to receive an upper portion the jigsaw blade. The clamp body also includes a hollow tubular extension. A cam body is pivotable about an axis through a cylindrical bore such that cam surfaces move in and out of contact with an interior surface of the clamp body to engage or release the blade. A spring biases the cam body into engagement with the clamp body surface. The user must press on a protrusion of the cam body to pivot the cam surfaces way from the clamp surface and against the force of the spring.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 11, 2012
    Assignee: Black & Decker Inc.
    Inventor: Mike Wilson
  • Patent number: 8230607
    Abstract: A reciprocating tool that includes a spindle that reciprocates with respect to a housing within a cavity of the housing. The reciprocating tool includes a blade clamp mechanism actuator coupled to the housing for movement with respect the housing between first and second positions. The spindle reciprocates with respect to the blade clamp mechanism actuator. A blade clamp mechanism is coupled to the spindle for reciprocating movement therewith, and the blade clamp mechanism is configured to attach the saw blade to the spindle. The blade clamp mechanism includes a collar mounted on the end of the spindle, and the collar is rotatable about the longitudinal axis of the spindle between an engaged position and a disengaged position in response to movement of the blade clamp mechanism actuator between the first position and the second position.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 31, 2012
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Kurt Limberg, Roger D. Neitzell, Michael S. Steele
  • Patent number: 8205341
    Abstract: A tool is provided, having a handle with a blade chamber defining a blade chamber cavity, a first locking element, and a second locking element that is user actuated, and a removable blade with a tang engageable in the blade chamber cavity and a working portion. A blade sleeve, is also provided, at least a portion of which is located on the tang.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: June 26, 2012
    Assignee: United States Gypsum Company
    Inventors: Aaron Charles Rosso, Matthew Earle Myers, Amar Arvind Patel, Scott Fong
  • Patent number: 8201336
    Abstract: A retractable knife includes an elongate handle and a blade holder slidingly mounted within the handle for sliding movements between a retracted position and an extended position. The blade holder is configured for receiving. A manually operable blade lock is formed on the holder and including a release member rotatably mounted on the blade holder. The release member having a first portion projecting beyond the handle and positioned to be actuated by a finger of a user while holding the handle. A second portion is movable with the first portion between a locking position in which the second portion is received with a notch of a blade and a releasing position in which the second position is removed from the blade notch to a position outside the notch of the blade. A spring normally rotates the release member to move the second portion to the locking position.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: June 19, 2012
    Assignee: Olympia Tools International, Inc.
    Inventor: Huang Yuan De
  • Patent number: 8191267
    Abstract: A tool handle for use with a removable blade having a latch opening, the tool handle having a housing defining a blade chamber in the housing, a latch disposed in the housing, configured for moving between a latched position and a released position. In the latched position, the latch is configured to extend through the latch opening. Also included is an actuator at least partially enclosed within the housing, configured for moving between a rest position and a depressed position, wherein movement of the actuator to the depressed position causes the latch to move to the released position.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 5, 2012
    Assignee: United States Gypsum Company
    Inventors: Amar Arvind Patel, Aaron Charles Rosso, Matthew Earle Myers, Scott Fong
  • Patent number: 8181352
    Abstract: A surgical blade device similar to a disposable scalpel wherein the blade assembly is easily replaceable is provided. The surgical blade device allows the user to replace a blade assembly during surgery or, after sterilization of the handle and replacement of the blade assembly, reuse the surgical blade device. The surgical blade device disclosed herein further provides for an inexpensive blade assembly replacement device which is simple to operate. That is, the blade replacement device has a limited number of components.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: May 22, 2012
    Inventors: Howard L. Shackelford, Sr., Howard L. Shackelford, Jr.
  • Patent number: 8099873
    Abstract: An electric-powered cutting machine includes a reciprocable plunger held by and protruding outward from a housing; an operation member capable of being pivoted on the housing; and a blade holding mechanism disposed at a tip end portion of the plunger, the blade holding mechanism causing a blade to be detachably attached to the plunger. The operation member includes an operation portion and an abutting portion, wherein a distance from the operation portion to a rotating fulcrum is longer than a distance from the abutting portion to the rotating fulcrum. The blade holding mechanism is biased and is capable of swinging, and the blade holding mechanism includes a rotating member capable of being pressed against a side of the blade, wherein the abutting portion abuts against the rotating member when the operating member swings, and wherein the blade is detachably attached to the plunger by swinging of the rotating member.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: January 24, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Naoya Eto, Shinichi Sakuma
  • Patent number: 8087173
    Abstract: A modular tool system includes a plate for carrying a tool, a top plate and a base plate. A pair of locking members is disposed at two opposite ends of the tool-carrying plate. Each lock member is rotatably mounted in the tool-carrying plate, and has an axis of rotation perpendicular the tool-carrying plate. Each locking member has a keyway for receiving and locking a corresponding key of the top plate, and a key for inserting and locking in a corresponding keyway of the base plate. Turning of the keys of the top plate relative to the keyways of the tool-carrying plate locks the top plate and the tool-carrying plate together, and further turning of the keys of the top plate turns the keys of the tool-carrying plate relative to the keyways of the base plate and locks the tool-carrying plate and the base plate together.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: January 3, 2012
    Inventors: Yu Kwong Savio Tang, Yury Vinokurov
  • Patent number: 8079395
    Abstract: A quick change knife blade assembly, for use in conjunction with a tape roll dispensing cartridge assembly of a case sealing machine, comprises a knife blade mounted upon a knife blade mounting plate. A pin plate is fixedly connected to mounting pins passing through the knife blade, and springs are interposed between the pin plate and the mounting plate so as to normally bias the pin plate to a position at which the mounting pins prevent the removal of the knife blade from the mounting plate. When the pin plate is depressed against the biasing forces of the springs, the mounting pins are moved so as to permit the knife blade to be removed from the mounting plate.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: December 20, 2011
    Assignee: Illinois Tool Works Inc.
    Inventors: Bryce J. Fox, William J. Menta
  • Patent number: 8074362
    Abstract: A foldable hand tool having a blade holder mounted with a handle for movement from folded and unfolded positions. The blade holder has an opening adapted to receive blades of different sizes. The foldable hand tool further has a locking mechanism to lock the holder in an open position. A blade holder lock engages a resilient arm formed in the side wall of the handle.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: December 13, 2011
    Assignee: Meridian International Co., Ltd.
    Inventors: Yao Kun Gui, Zheng Guo Wang
  • 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: 8065945
    Abstract: A tissue cutting device is described, a representative one of which includes: a handle part; a head unit including comprising a plurality of blades arranged so as to extend substantially parallel with a longitudinal direction of the handle part at intervals and a blade holding portion for holding the plurality of blades; and a head holding part located at the distal end of the handle part, for holding the head.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: November 29, 2011
    Assignee: Sysmex Corporation
    Inventors: Hironori Kobayashi, Masahiko Tsujimoto, Michihiko Noguchi, Koichi Yamagata, Yasunori Maekawa
  • Patent number: 8024865
    Abstract: The invention relates to a clamping device (8) for connecting a saw blade (12) to a reciprocating rod (6) of a jig saw, in particular a hand-operated compass saw (2), comprising a mounting (20), which is connected to the reciprocating rod (6) and has a recess (22) for receiving a head end (10) of the saw blade (12), a locking sleeve (30), which can be turned about the axis (40) with respect to the mounting (20) against the force of a torsion spring (60) to lock the head end (10) of the saw blade (12) in a locking position in the recess (22) and to allow removal of the saw blade (12) in a removal position. It is intended that a stop (78) interacts with a part (80) of the torsion spring (60), in order to prevent movement of the locking sleeve (30) beyond the removal position.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: September 27, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Hans Kaiser, Marcel Casota, Daniel Saegesser
  • Patent number: 8006391
    Abstract: A releasably locking mechanism for locking and releasing the shank of a blade or other implement snugly within a receiver, wherein a magnetized ball extends through aligned holes in the shank and the first wall of the receiver, and seats in a smaller hole in the second wall of the receiver so that the equator of the ball is positioned on the side of the shank nearer to the second wall of the receiver. Unseating the ball and repositioning its equator to the opposite side of the shank, nearer to the first wall of the receiver, facilitates removal of the ball to allow removal of the shank from the receiver.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: August 30, 2011
    Inventors: Ronald G. Mashburn, Larry D. Mount
  • Patent number: 7930829
    Abstract: A compact utility knife includes a blade holder slidably connected to a handle. A trapezoidal utility blade detachably mounts to the blade holder via a blade lock mechanism. A slide lock mechanism selectively retains the blade holder in its extended or retracted position relative to the handle. When the blade holder is extended, the blade holder and a majority of the blade extend forwardly of a forwardmost point of the handle. Extending the blade holder significantly increases an overall length of the knife such that the knife is comfortable to use when in the extended position and longitudinally compact when in the retracted position. The knife includes a blade lock mechanism. An aperture in the front of the handle creates a gap between the blade and the handle to discourage debris on the blade from transferring to the handle when the blade is retracted.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: April 26, 2011
    Assignee: Stanley Black & Decker, Inc.
    Inventors: Eric Ranieri, Stephen Rowlay, Gary E. Van Deursen
  • 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