Ball Or Roller Patents (Class 279/22)
  • Patent number: 10307896
    Abstract: A sleeve device includes a main unit having a sleeve with an open end face, a receiving space intercommunicating with the open end face, and a radial hole. An engaging member extends into the receiving space. A fixing member is mounted to an end of the receiving space opposite to the open end face. A pressing member is slideably received in the receiving space for pressing against the fixing member. The pressing member includes a cylindrical portion, an abutting portion, and a pressing portion, with the abutting portion and the pressing portion disposed on two ends of the cylindrical portion. A positioning member is slideably received in the radial hole for selectively pressing against an outer periphery of the cylindrical portion or the pressing portion. A ring is rotatably mounted around the sleeve and includes an inner periphery and a first recessed portion for selectively abutting the positioning member.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 4, 2019
    Inventor: Zu-Shung Shu
  • Patent number: 9914176
    Abstract: A rotary tool for driving drill bits or screw bits. The rotary tool includes a main body, a main shaft, a chuck, and a locking assembly for locking the chuck at a fixed position relative to the main shaft in the axial direction. The locking assembly is arranged fixedly relative to the main body in the circumferential direction of the main shaft and it has a portion that contacted with the chuck when locking the chuck.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 13, 2018
    Assignee: Chervon (HK) Limited
    Inventor: Shichun Tao
  • Patent number: 9902050
    Abstract: A magnetic positioning device for a hand tool includes a body, a sleeve movably mounted to the body, a first clip and a second clip respectively mounted to the body, a resilient member mounted to the body to provide a resilient force to assist the sleeve to be moved to three positions relative to the body. A bead is inserted in a radial hole of the body so as to be engaged with a notch of a bit in the body. A magnetic member is received in one end of the sleeve to attract an object (a bolt) so that the bit can be easily drive the object which does not drop from the sleeve. The object is pushed to be separated from the sleeve by the bit when moving the sleeve to removing position. A magnet is received in the body to position the bit at the body.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 27, 2018
    Inventor: Chung-Yu Tsai
  • Patent number: 9877765
    Abstract: A surgical instrument includes a handpiece to which a handpiece shaft can be flanged, and a tool mounting for receiving a tool which can be rotatably supported in the handpiece shaft for axially securing the tool in the tool mounting and for transferring a torque to the tool. The tool mounting includes a sleeve-shaped entrainment shaft with a plug-in zone for a torsion rod and torque transmission and axial locking zones for the tool. The tool mounting also includes a closure sleeve surrounding the entrainment shaft that includes a distal blocking section which acts on the axial locking zone of the entrainment shaft for axially locking and releasing the tool, and a proximal arresting section acting on the plug-in zone of the entrainment shaft for arresting the tool mounting on the torsion rod to transfer torques and axial forces and for releasing the tool mounting from the torsion rod.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: January 30, 2018
    Assignee: Aesculap AG
    Inventors: Jürgen Barth, Florian Kraft
  • Patent number: 9744601
    Abstract: A drill chuck comprises: a drill body having a plurality of inclined guiding holes distributed evenly along a circumferential direction; a plurality of clamping jaws arranged slidably in the inclined guiding holes respectively and having external thread segments; an outer socket rotatably fitted over the drill body; and a nut engaged with the clamping jaws and connected to the out socket in a driving manner; further comprises: a locking mechanism located between a first thrust surface of the drill body and the nut and having a locking plate and locking balls, wherein an end face of the locking plate facing the nut is thereon provided with a plurality of slide grooves having a helix angle, the helix angle of the slide grooves is less than a friction angle between the locking balls and locking plate, and the locking balls are movably arranged along the slide grooves.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 29, 2017
    Assignee: Shandong Weida Machinery Co., LTD
    Inventor: Wenzhang Qiao
  • Patent number: 9707626
    Abstract: A hole saw assembly is revealed. The hole saw assembly is a hole saw with a quick change drill rod. The hole saw assembly includes a quick release device and the drill rod, both arranged at the hole saw. The drill rod is inserted through the quick release device and the quick release device is for fastening and releasing a drill head of the drill rod. Thereby the drill rod is fitted over the quick release device and users can fasten and release the drill rod quickly. Users can also quickly mount a shank of the drill rod quickly into the hole saw. The drill rod is fast slid out of the quick release device for replacement of a new drill rod. Then the shank is locked on the hole saw so that the shank and the hole saw can rotate synchronously.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: July 18, 2017
    Assignee: ROTE MATE INDUSTRY CO., LTD.
    Inventor: Ying-Tsung Lai
  • Patent number: 9669469
    Abstract: A coupling device of jigs includes a foundation, a tube, a plurality of balls, and a piston base. The foundation has a chamber, in which a part of the tube is inserted. The tube has a plurality of through holes for housing the balls. The piston base is received in the chamber, and fitted to the tube. An inner surface of the piston base has a circular groove and an abutment surface. The piston base can be moved along an axial direction of the tube between a first position and a second position. When at the first position, a part of each ball is inside the circular groove; when at the second position, an area where the abutment surface abuts against each ball is not merely a single point. Whereby, the force applied on the abutment surface is dispersed, and therefore the processing accuracy of workpieces is ensured.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: June 6, 2017
    Assignee: CHERNG JIN TECHNOLOGY CO., LTD.
    Inventor: Chien-Chih Lin
  • Patent number: 9573195
    Abstract: A quick-change system for a tool holder comprises a machine-side receiving fixture having a hollow-cylindrical extension on which a switching sleeve is displaceably held. Automatic angular alignment of the tool holder upon introduction into the hollow-cylindrical extension of the receiving fixture is enabled by an alignment of the points of the star-shaped end face on the cylindrical holding portion of the tool holder, upon impact against a first set of three balls angularly spaced 120° apart. Once the tool holder has aligned itself in this way, then the first balls make their way into the longitudinal grooves of the cylindrical holding portion, whereby a rotationally fixed coupling is achieved. Upon the further insertion into the hollow-cylindrical extension, an axial securement finally occurs when a second set of three balls are displaced radially inward into associated depressions on the cylindrical holding portion.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: February 21, 2017
    Assignee: BILZ WERKZEUGFABRIK GMBH & CO. KG
    Inventor: Werner Schneider
  • Patent number: 9561582
    Abstract: A connector includes a rod body, at least one detent, an abutting assembly, a first elastic member and a connecting rod. An insertion groove of the rod body has at least one restraining section, at least one radially-enlarged section and a receiving section, and the rod body has at least one through hole communicating with the receiving section. The detent is received in the through hole and partially protrudes into the insertion groove. The abutting assembly is sleeved outside the rod body, and the detent is sandwiched between the abutting assembly and rod body. The first elastic member abuts against the rod body and abutting assembly to bias the abutting assembly toward an abutting position. The connecting rod further includes at least one abutting section protruding radially and an annular groove, and is axially movable relative to the rod body to comoving or idling position.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 7, 2017
    Assignee: CHUNG TAAN INDUSTRIAL CO., LTD.
    Inventor: Chung-Liang Hsu
  • Patent number: 9328760
    Abstract: The present invention is directed to a rod string with a plurality of rod sections and a method for making up and breaking out the rod sections. The rod sections have corresponding pin and box ends, each having grooves and lands and an ungrooved portion. The rod sections can be connected by inserting the pin end into a box end and turning less than a full turn. A lock engagement mechanism having a first end and a second end is provided inside the rod sections and locks when the pin end is rotated into place. The lock engagement mechanism has a rotation stop which protrudes proximate the first end to prevent relative rotation of two rod sections until a key manipulates the lock engagement mechanism to retract the rotation stop.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 3, 2016
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane
  • Patent number: 9327335
    Abstract: Retainers for holding tools and methods for controlling the motion of a locking member, such as a resiliently-biased locking ball, in a retainer. The locking member is disposed in a passage that intersects another passage configured to receive the tool. A portion of the locking member has a contacting relationship with the tool in order to hold the tool within its passage. The retainer further includes a constraint member, which may be a threaded member or a non-threaded member, that occludes the passage containing the locking member. During a stamping operation using the tool, the constraint member mechanically constrains motion of the locking member within its passage by contact with the locking member.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: May 3, 2016
    Assignee: Dayton Progress Corporation
    Inventors: Dennis Michael Belyan, Richard Everett Del Grosso, II
  • Patent number: 9205497
    Abstract: A collet for connecting a tool to a driver includes a shaft having an end. The collet includes a body including a first end that connects to the driver and a second end having an internal space partially defined by a frustoconical bore and a plurality of jaws disposed within the space. Each of the jaws includes a body having a frustoconical surface arranged to engage the frustoconical bore and an engagement member coupled to each body to move between an unlocked and a locked position. Rotation of the tool about the axis in a first direction biases the engagement member toward the unlocked position to allow movement of the tool with respect to the jaws, and rotation of the tool about the axis in a second direction opposite the first direction biases the engagement member toward the locked position wherein the tool is fixed with respect to the jaws.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: December 8, 2015
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Ryan Harrison, Robert E. McCracken, Daniel J. Bowen
  • Patent number: 8919230
    Abstract: An internal adapter for use in torque-limiting handles for interchangeable orthopedic tools contains a slidable collar component, house component, retaining ring, spring, driver component, cover and cam which engages a torque-limiting mechanism. A plurality of securing ball mechanisms releasably secure an orthopedic tool in the adapter, while a configuration of chamfered surfaces centrally stabilize the tool. A plurality of guiding chamfers located in a driver component rotationally secures the orthopedic tool.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: December 30, 2014
    Inventor: Hua Gao
  • Patent number: 8882113
    Abstract: A holder for a bit is disclosed. The bit may include a first locking element. The holder may include a housing; a base assembly including a first hole; a second locking element partially disposed within the first hole and configured to move between a locking position in which the second locking element engages the first locking element to prevent removal of the bit, and an unlocking position in which the second locking element is spaced from the first locking element allowing the bit to be removed; and a follower assembly contained within the housing and configured to move relative to the housing and base assembly between a first position in which the follower assembly supports the second locking element in the locking position, and a second position in which the follower assembly allows the second locking element to move from the locking position to the unlocking position.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 11, 2014
    Assignee: WestPort Medical, Inc.
    Inventors: Douglas Roy Porter, Jason Dean Braunberger
  • Publication number: 20140312577
    Abstract: A quick-change system for a tool holder comprises a machine-side receiving fixture having a hollow-cylindrical extension on which a switching sleeve is displaceably held. Automatic angular alignment of the tool holder upon introduction into the hollow-cylindrical extension of the receiving fixture is enabled by an alignment of the points of the star-shaped end face on the cylindrical holding portion of the tool holder, upon impact against a first set of three balls angularly spaced 120° apart. Once the tool holder has aligned itself in this way, then the first balls make their way into the longitudinal grooves of the cylindrical holding portion, whereby a rotationally fixed coupling is achieved. Upon the further insertion into the hollow-cylindrical extension, an axial securement finally occurs when a second set of three balls are displaced radially inward into associated depressions on the cylindrical holding portion.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 23, 2014
    Applicant: BILZ WERKZEUGFABRIK GMBH & CO. KG
    Inventor: Werner SCHNEIDER
  • Patent number: 8844942
    Abstract: A mechanical connector designed to connect an orthopedic tool to a handle or motor. The connector includes a locking ball and spring-load sleeve mechanism that compresses a ball into an annular groove of the tool drive shaft, locking the shaft in the connector. The tool drive shaft is released from the connector by applying a force to the housing in a proximal direction. A portion of the housing removes the locking ball from the groove of the tool drive shaft, unlocking the shaft from the connector as the housing travels in a proximal direction.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 30, 2014
    Assignee: Greatbatch Ltd.
    Inventors: Steve Landowski, Kevin K. Marchant
  • Patent number: 8844940
    Abstract: A tool-bit holder (10) for varying tool-bit shank profiles comprising a hub (12) having a longitudinal bore (28) adapted for receiving a tool-bit shank (66, 70, 80). The hub (12) has a plurality of radial slots (38) communicating with the first section (30) of the longitudinal bore (28). The tool-bit holder (10) has a collar (14) fixedly attached to the hub (12) adjacent the open (29) and disposed annularly about the hub (12). A sleeve (16) is axially slidably mounted and disposed annularly about the hub (12). The sleeve (16) has a plurality of radial bores (48), each being in communication with a respective radial slot (38) of the hub (12) with a detent ball (18) disposed within each. A spring (20) is provided for biasing the sleeve (16) towards the open end (29) wherein the detent ball (18) engages an inner ramp face (46) of the collar (14).
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 30, 2014
    Assignee: Insty-Bit, LLC
    Inventor: James L. Wienhold
  • Patent number: 8764025
    Abstract: An internal adapter for use in handles for interchangeable orthopedic tools contains a collar assembly, house assembly, retaining ring, spring and driver assembly. A plurality of securing ball mechanisms releasably secure an orthopedic tool in the adapter, while a configuration of chamfered surfaces centrally stabilize the tool. A plurality of guiding chamfers located in a shaft driver assembly rotationally secures the orthopedic tool.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: July 1, 2014
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: 8727357
    Abstract: A toolholder support member for retaining the shank of a toolholder has a bore to accept the toolholder shank. A retention member extends through the bore wall to engage a perforation extending through the shank or indentation within the shank, thereby retaining the shank within the receiving bore. The retention member is biased to provide resistance for insertion or extraction of the shank within the receiving bore. Furthermore, the retention bore is angled relative to the longitudinal axis of the receiving bore so that the force required to insert the toolholder within the receiving bore is minimized, while the force required to extract the toolholder from the receiving bore is maximized.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 20, 2014
    Assignee: Kennametal Inc.
    Inventors: William Michael Long, Paul Albert Brown, Carla Erickson
  • Patent number: 8690164
    Abstract: A hand tool with bit release device includes a connecting shaft, a block, a positioning bead and a cover. When the user wants to insert a tool bit into the connecting shaft, the user pushes the tool bit into the connecting shaft directly and the positioning bead engages with the tool bit firmly. When the user wants to release the tool bit from the connecting shaft, the user moves the cover axially relative to the connecting shaft and the positioning bead disengages with the tool bit so that the tool bit is released from the connecting shaft.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: April 8, 2014
    Inventor: Ji-Fen Meng
  • Patent number: 8672331
    Abstract: The invention relates to a tool holder for an electric tool, particularly for a chisel hammer and/or drill hammer. A tool receptacle is provided for receiving a cylindrical shaft of an insertion tool introduced through an insertion opening. The cylindrical shaft has at least two diametrically opposed detent depressions on its circumferential surface. The tool holder further has a locking device having at least one locking element, at least one blocking element and at least one restoring element. According to the invention, the locking device has at least two locking elements. Upon insertion of the cylindrical shaft of the insertion tool, the restoring element applies different forces to the locking elements of the locking device.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: March 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Willy Braun, Christian Koepf
  • Patent number: 8590905
    Abstract: Connection of a bit with two balls is enabled while high operability of attachment and detachment of the bit is maintained. A pressing ring 23 is held at the advance position together with an operation sleeve 22 by a guide washer 24 forced by a coil spring 25. When the rear end of the bit is inserted into a tool holder 8, the balls 27, 27 that are rolled rearward by the contact of the rear end of the bit are pushed in between the pressing ring 23 and the guide washer 24 in order, and the balls 27, 27 can be retracted from the tool holder 8 in the state where the pressing ring 23 is held at the advance position by the tilt of the guide washer 24.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: November 26, 2013
    Assignee: Makita Corporation
    Inventors: Masanori Furusawa, Yoshihiro Kasuya
  • Patent number: 8550471
    Abstract: A tool bit holder includes a sleeve, a hub, and a locking mechanism. The sleeve is moveably mounted on an outer periphery of the hub and includes a first notch, a second notch, and an abutting section. The abutting section is disposed between the first and second notches. The locking mechanism is disposed in a cavity defined in the outer periphery of the hub and is retained therein by the sleeve. Also, the locking mechanism includes a control member, a resilient member, and a detent. The control member is moveably disposed in the cavity and is biased by the resilient member. The detent is carried by the control member.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: October 8, 2013
    Assignee: New Way Tools Co., Ltd.
    Inventor: Ping-Wen Huang
  • Patent number: 8381830
    Abstract: A power tool having a housing, an electric motor disposed in the housing, and a spindle drivingly attached to the electric motor. The spindle includes a cavity adapted for receiving a bit therein and a window extending through the spindle in communication with the cavity. The power tool further has a retention device including a bit engaging member disposed within the housing and operable to extend through the window and retain a bit within the cavity. The power tool still further has an actuator operable by a user externally of the housing to disengage the bit engaging member from a bit received in the cavity and, finally, a mechanical interconnection system operably coupled between the actuator and the retention device to actuate the retention device in response to the actuator, wherein the mechanical interconnection is disposed within the housing.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 26, 2013
    Assignee: Black & Decker Inc.
    Inventors: Daniel Puzio, Aris C. Cleanthous, Daniel L. Krout, Robert G. Kusmierski
  • Patent number: 8292304
    Abstract: A tool-bit holder (10) for varying tool-bit shank profiles comprising a hub (12) having a longitudinal bore (28) adapted for receiving a tool-bit shank (66, 70, 80). The hub (12) has a plurality of radial slots (38) communicating with the first section (30) of the longitudinal bore (28). The tool-bit holder (10) has a collar (14) fixedly attached to the hub (12) adjacent the open (29) and disposed annularly about the hub (12). A sleeve (16) is axially slidably mounted and disposed annularly about the hub (12). The sleeve (16) has a plurality of radial bores (48), each being in communication with a respective radial slot (38) of the hub (12) with a detent ball (18) disposed within each. A spring (20) is provided for biasing the sleeve (16) towards the open end (29) wherein the detent ball (18) engages an inner ramp face (46) of the collar (14).
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 23, 2012
    Assignee: Insty-Bit, LLC
    Inventor: James L. Wienhold
  • Patent number: 8267408
    Abstract: A hand tool includes handle, a connector mounted on the handle and having an inner wall provided with a mounting hole and a peripheral wall provided with a plurality of positioning holes, a drive member mounted on the connector and having a first end provided with a fixing portion which is detachably mounted in the mounting hole of the connector and has a peripheral wall provided with a fixing groove, a plurality of locking balls movably mounted in the positioning holes of the connector and movable into the fixing groove of the drive member to lock the drive member onto the connector, and a control sleeve movably mounted on the connector and movable to press or release the locking balls. Thus, the drive member can be detached from the connector to facilitate a user replace the drive member.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: September 18, 2012
    Inventor: Chen-Tsung Chen
  • Patent number: 8240233
    Abstract: An improved connecting rod of a tool head includes a hollow rod having an assembly end and a tool head inserting end. The tool head inserting end is recessed axially to form a slot, and a radial through-hole is placed therethrough. An internal slider is assembled into the slot in an axial sliding and non-rotating state. The internal slider has a tool head abutting end and a radial groove. A magnetic member is assembled onto the tool head abutting end. An elastic bracing member is assembled between the internal slider and the inner wall of the slot, and elastically supports the internal slider. A control bead is assembled into the radial groove of the internal slider, and shifting elastically with assembly of an elastic member. One side of the control bead is aligned with the radial through-hole of the slot, so it can be protruded in a positioning state.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 14, 2012
    Inventor: Jui-Min Huang
  • Patent number: 8172235
    Abstract: Connection of a bit with two balls is enabled while high operability of attachment and detachment of the bit is maintained. A pressing ring 23 is held at the advance position together with an operation sleeve 22 by a guide washer 24 forced by a coil spring 25. When the rear end of the bit is inserted into a tool holder 8, the balls 27, 27 that are rolled rearward by the contact of the rear end of the bit are pushed in between the pressing ring 23 and the guide washer 24 in order, and the balls 27, 27 can be retracted from the tool holder 8 in the state where the pressing ring 23 is held at the advance position by the tilt of the guide washer 24.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: May 8, 2012
    Assignee: Makita Corporation
    Inventors: Masanori Furusawa, Yoshihiro Kasuya
  • Patent number: 8016523
    Abstract: A tool has a distal operative portion and a proximal shank with a mounting portion, for mounting the tool in a holder. A substantial portion of the mounting portion has a cross-sectional shape with at least one and fewer than six 60-degree segments thereof having segment ends joined by a flat surface. The holder has a distal axial aperture or mounting hole for receiving the tool, the aperture having a cross-sectional shape which has 60-degree segments thereof having segment ends joined by a flat surface, but no more such flat surface segments than those corresponding to flat surface segments of the tool. The holder further has a ball-detent mechanism or other locking mechanism for engaging the mounting portion of the tool.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: September 13, 2011
    Assignee: Team Fair Holdings Limited
    Inventors: Kailash C. Vasudeva, Satnam Singh
  • Patent number: 7984914
    Abstract: A system for use in securing an attachment to a driver having an attachment mounting area includes an attachment mount configured for releasable engagement with an attachment as well as a driver mount interconnected with the attachment mount. The driver mount includes a removable mounting member configured for engagement with the attachment mounting area of the driver.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: July 26, 2011
    Inventor: Scott A. Paulsen
  • Publication number: 20110140376
    Abstract: A tool-bit holder (10) for varying tool-bit shank profiles comprising a hub (12) having a longitudinal bore (28) adapted for receiving a tool-bit shank (66, 70, 80). The hub (12) has a plurality of radial slots (38) communicating with the first section (30) of the longitudinal bore (28). The tool-bit holder (10) has a collar (14) fixedly attached to the hub (12) adjacent the open (29) and disposed annularly about the hub (12). A sleeve (16) is axially slidably mounted and disposed annularly about the hub (12). The sleeve (16) has a plurality of radial bores (48), each being in communication with a respective radial slot (38) of the hub (12) with a detent ball (18) disposed within each. A spring (20) is provided for biasing the sleeve (16) towards the open end (29) wherein the detent ball (18) engages an inner ramp face (46) of the collar (14).
    Type: Application
    Filed: February 7, 2011
    Publication date: June 16, 2011
    Inventor: James L. Wienhold
  • Patent number: 7954824
    Abstract: A coupling device includes a body having an end for coupling with a handle. The body includes a compartment having a receiving space for receiving an object such as a bit. The receiving space includes a slanted face extending longitudinally outward and radially inward. A follower is slidably mounted in the compartment and includes an outer end having a restraining hole. A positioning member extends from a radially outer side through the restraining hole to a radially inner side of the follower and is slidable along the slanted face. The follower is biased outward by an elastic element toward the receiving space when the object is inserted into the receiving space and moves the follower longitudinally inward. A radial clamping force is imparted from the slanted face through the positioning member to securely clamp the object in the receiving space.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 7, 2011
    Inventor: Bobby Hu
  • Patent number: 7942426
    Abstract: A driving tool assembly includes a drive component adapted to be connected to a power tool or hand tool. A driven component is pivotally connected to the drive component and is adapted to receive a tool bit, drill bit, or otherwise provide a nut driver or socket wrench. A locking mechanism is provided for lockingly engaging the driven component to be in co-axial alignment with the drive component. The drive component includes a shaft or a mandrel having a driving shank formed or provided on one end thereof. The driving shank has a non-circular cross-section formed or defined by three or more curved and planar sidewalls. The number of sidewalls preferably includes three, four or six sidewalls, for engaging with a non-circular cavity of the driven component.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: May 17, 2011
    Assignee: Black & Decker Inc.
    Inventor: Michael P. Peters
  • Patent number: 7896355
    Abstract: A tool-bit holder (10) for varying tool-bit shank profiles comprising a hub (12) having a longitudinal bore (28) adapted for receiving a tool-bit shank (66, 70, 80). The hub (12) has a plurality of radial slots (38) communicating with the first section (30) of the longitudinal bore (28). The tool-bit holder (10) has a collar (14) fixedly attached to the hub (12) adjacent the open (29) and disposed annularly about the hub (12). A sleeve (16) is axially slideably mounted and disposed annularly about the hub (12). The sleeve (16) has a plurality of radial bores (48), each being in communication with a respective radial slot (38) of the hub (12) with a detent ball (18) disposed within each. A spring (20) is provided for biasing the sleeve (16) towards the open end (29) wherein the detent ball (18) engages an inner ramp face (46) of the collar (14).
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: March 1, 2011
    Inventor: James L. Wienhold
  • Publication number: 20100207335
    Abstract: A tool includes a handle and a chuck. The chuck includes a socket, a sleeve located on the socket. The socket includes a recess, an aperture in communication with the recess, chutes in communication with the recess, and a groove in an external side. The sleeve includes front, middle and rear shoulders on an internal side. A C-clip is located within the groove. A first stopping ring is abutted against the front shoulder. The C-clip is located between second and third stopping rings. A small ball is located in the aperture of the socket and restrained with the front shoulder. Large balls are movably located in the chutes. A pushing ring is located against the large balls. A first elastic element is compressed between the second stopping ring and the pushing ring. A second elastic element is compressed between the third stopping ring and the rear shoulder.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 19, 2010
    Inventor: Jack Lin
  • Patent number: 7766585
    Abstract: A tool (1) has a distal operative portion and a proximal shank (2) with a mounting portion (3), for mounting the tool in a holder (10). A substantial portion of the mounting portion has a cross-sectional shape with at least one and fewer than six 60-degree segments thereof having segment ends joined by a flat surface (5). The holder has a distal axial aperture or mounting hole (12) for receiving the tool (1), the aperture having a cross-sectional shape which has 60-degree segments thereof having segment ends joined by a flat surface (13), but no more such flat surface segments than those corresponding to flat surface segments of the tool. The holder further has a ball-detent (21) mechanism or other locking mechanism for engaging the mounting portion (3) of the tool (1).
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: August 3, 2010
    Assignee: Team Fair Holdings Limited
    Inventors: Kailash C. Vasudeva, Satnam Singh
  • Patent number: 7740249
    Abstract: A holder for replaceable tools, including a body with an axial opening extending along an axis and for releasably receiving the tools and having two radial openings with balls therein extending into the axial opening. Two ramps are movable on the body and they engage the balls for forcing the balls onto the tool being held in the body and thereby radially and axially stabilize the tool in the body. Two separate springs engage the ramps for movement of the ramps separate from each other.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: June 22, 2010
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: 7644929
    Abstract: A very easy-to-actuate, replaceable tool fitting is comprised in that at least one movably supported profiled body (15) on an output spindle (1) or on the tool fitting (11) of the hand-held power tool and at least one profiled recess (7) on the output spindle (1) or on the tool fitting (11) are shaped and situated in such a way that when the tool fitting (11) is slid onto the output spindle (1), the at least one profiled body (15) engages in detent fashion in the at least one profiled recess (7), achieving both an axial locking and a rotary driving of the tool fitting (11) in relation to the output spindle (1) and means (6, 8, 14) are provided, which, through a rotating and sliding motion of the tool fitting (11) on the output spindle (1), guide the profiled body (15) into the profiled recess (7).
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: January 12, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Karl Frauhammer, Otto Baumann, Rolf Mueller, Heinz Schnerring, Dietmar Saur, Willy Braun, Axel Kuhnle, Thomas Bernhardt, Uwe Engelfried
  • Patent number: 7581470
    Abstract: The present invention provides a universal screwdriver bit set, including a main rod, control bushing, movable tube and movable magnetic rod. An abutting end and a recessing slot are placed externally onto the movable tube. The movable magnetic rod is assembled into the recessing slot of movable tube in a limited sliding expansion state. The movable magnetic rod is provided with a magnetic head and a drive rod. There is a spacing fall between the recessed magnetic head and abutting end of the movable tube. Either a single-ended or double-ended screwdriver bit, or the lateral bead locating flanges with some offsets, can be positioned securely, such that the universal screwdriver bit set allows for assembly of screwdriver bits with at least 4 currently available insertion ends, thereby improving the adaptability and applicability.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 1, 2009
    Inventor: Jui-Min Huang
  • Publication number: 20090212507
    Abstract: A device for holding a bit for a tool, the bit to be disassembled and/or re-assembled when held, includes a housing to be secured to a stationary base and a clamping mechanism for releasably clamping the bit to the housing so that it may be disassembled and/or re-assembled, the clamping mechanism including a recess provided in the housing, a movable gripping element arranged inside the recess and having a first gripping area for engaging the bit part, and a stationary gripping element, the gripping element having a second gripping area for engaging a bit part, wherein the movable gripping element is configured to be moved between an open position wherein the stationary gripping element and the movable gripping element are spaced to allow to receive or to remove the bit part and a clamping position wherein the bit part is clamped between first and second gripping areas of the gripping elements.
    Type: Application
    Filed: February 26, 2009
    Publication date: August 27, 2009
    Inventor: Sjoerd Anne Van Valkenburg
  • Publication number: 20090045593
    Abstract: The invention relates to a connecting point (1) comprising two tool parts, of which a first tool part (3) has a receptacle (7) in which the second tool part (5) may be inserted, and a clamping device which clamps the tool parts together. The connecting point (1) is characterized in that a retaining device (25) is provided which, independently of the clamping device, holds the tool parts (3, 5) together in the joined state.
    Type: Application
    Filed: May 25, 2006
    Publication date: February 19, 2009
    Applicant: Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventor: Andreas Reinauer
  • Patent number: 7424841
    Abstract: A screw bit positioning device includes a tube which has a first hole and a second hole respectively defined through a wall thereof so that a first bead and a second bead are respectively engaged the first and second holes. A movable member is movably received in the passage and located between a stop and a first spring. A sleeve is movably mounted to the tube and cooperates with a second spring mounted on the tube such that when the sleeve is moved, the first and second beads are simultaneously pressed into the tube or received in two respective spaces in the inner periphery of the sleeve. The screw bit and the movable member are positioned when the first and second beads are merged into the tube. When the first and second beads are released, the screw bit is pushed out from the tube by the first spring.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: September 16, 2008
    Inventor: Kuo-Chen Liu
  • Patent number: 7360606
    Abstract: A hand power tool has a striking element via which a tool (10) in a tool holder (12) can be driven in striking fashion, which the tool holder can be detachably secured—via its body (14)—to a drive part (16) via at least one locking element (18), which the locking element, in its engaged position, is capable of being fixed in position radially by a retaining element (20), which the retaining element is capable of being automatically guided by means of an operating element (22) out of its locked position into a release position that radially releases the locking element (18) in order to release the tool holder (12), whereby the retaining element (20) is capable of being moved by a corresponding component (14) into its release position against a spring force of a spring element (24) when the tool holder (12) is pushed onto the drive part (18), wherein the retaining element (20) is captively held on the drive part (16) and is capable of being guided into its release position by the operating element (22) in the p
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: April 22, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Saur, Axel Kuhnle, Helmut Wanek
  • Publication number: 20080072718
    Abstract: A screw bit positioning device includes a tube which has a first hole and a second hole respectively defined through a wall thereof so that a first bead and a second bead are respectively engaged the first and second holes. A movable member is movably received in the passage and located between a stop and a first spring. A sleeve is movably mounted to the tube and cooperates with a second spring mounted on the tube such that when the sleeve is moved, the first and second beads are simultaneously pressed into the tube or received in two respective spaces in the inner periphery of the sleeve. The screw bit and the movable member are positioned when the first and second beads are merged into the tube. When the first and second beads are released, the screw bit is pushed out from the tube by the first spring.
    Type: Application
    Filed: November 27, 2006
    Publication date: March 27, 2008
    Inventor: Kuo-Chen Liu
  • Patent number: 7325811
    Abstract: A chuck (2) for a hand-held power tool (4), which is connected with a motor-driven spindle (6) of the power tool for joint rotation therewith, includes a locking device for securing a shaft section of an exchangeable working tool and having a circular cross-section in the chuck (2) without a possibility of axial displacement and rotation relative to the chuck (2), with the locking device having a clamping element (12; 34) for securing the shaft section (8), and an element (18) for transmitting rotation to the shaft section (8) and rotationally separated from the clamping element (12; 34) by a rotary bearing (2).
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: February 5, 2008
    Assignee: Hilti Aktiengesellschaft
    Inventors: Markus Hartmann, Martin Noser, Guenther Sanchen
  • Patent number: 7316529
    Abstract: A router bit system includes a bit (or bits) and a bit holding assembly for attaching the bit to the drive shaft of a router without the use of additional hand tools. The bit holding assembly, which is attached to the drive shaft of the router, includes a chuck having a bore for receiving a shank of the bit. A collar for engaging and releasing the bit from the bit holding assembly slides between a first position for engaging the bit and a second position for releasing the bit. The collar is biased to the first position for engaging the bit. The bit is capable of being received in a standard collet-type bit holder, such as a standard router collet or the like.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: January 8, 2008
    Assignee: Black & Decker Inc.
    Inventors: Alan Phillips, John W. Schnell
  • Patent number: 7195247
    Abstract: A joint is disclosed for connecting a handle with various bits. The joint includes an insert fit in the handle, a socket connected with the insert for receiving the bits, a first locking device installed on the socket for locking long bits to the socket and a second locking device installed on the socket for locking short bits to the socket.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: March 27, 2007
    Inventor: Zu-Shung Shu
  • Patent number: 7140817
    Abstract: A router bit system includes a bit (or bits) and a bit holding assembly for attaching the bit to the drive shaft of a router without the use of additional hand tools. The bit holding assembly, which is attached to the drive shaft of the router, includes a chuck having a bore for receiving a shank of the bit. A collar for engaging and releasing the bit from the bit holding assembly slides between a first position for engaging the bit and a second position for releasing the bit. The collar is biased to the first position for engaging the bit. The bit is capable of being received in a standard collet-type bit holder, such as a standard router collet or the like.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: November 28, 2006
    Assignee: Black & Decker Inc.
    Inventors: Alan Phillips, John W. Schnell
  • Patent number: 7137457
    Abstract: A hand power tool, in particular a drill hammer or jackhammer, is disclosed, which has a guide tube (11), a tool holder (24) that can be attached interchangeably to the guide tube (11), and a locking device (23) that locks the tool holder (24) to the guide tube (11), the locking device being manually releasable by means of an axial displacement of a slide sleeve (34) oriented away from the tool holder (24). To achieve a compact connection construction, which is economical in production terms, between the interchangeable tool holder (24) and the hand power tool, the tool holder (24) is embodied as insertable by an end portion (241) into a guide portion (111) embodied on the front end of the guide tube (11), in the inner wall thereof (FIG. 1).
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: November 21, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Karl Frauhammer, Gerhard Meixner, Heinz Schnerring, Willy Braun, Axel Kuhnle
  • Patent number: 7104941
    Abstract: A tool pot according to the present invention includes a synthetic resin portion made from thermo-plastic resin and arranged over an entire length from an opening end to a tool gripping portion. Inner surface of the synthetic resin portion is a tool attachment hole. The synthetic resin portion is provided in the vicinity of the opening end of the attachment hole with a supporting surface for supporting a tool. The synthetic resin portion includes an outer structure defining outer shape, an inner structure defining inner circumference of the tool attachment hole, a cavity provided between the outer structure and the inner structure, and joint ribs joining the outer structure and the inner structure. Each of the outer structure, the inner structure and the joint ribs has wall-thickness enough to secure rigidity of the synthetic resin portion and capable of suppressing mold shrinkage of the synthetic resin portion.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: September 12, 2006
    Assignees: AQI Seiko Co., Ltd.
    Inventors: Satoshi Sakuragi, Toshihiro Goto