Single Patents (Class 81/63)
  • Patent number: 8567287
    Abstract: The present invention relates to the field of open-ended wrenches, and more specifically to a dual pawl assembly which can be used within an open-ended ratchet wrench to facilitate a bi-directional ratcheting motion.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 29, 2013
    Inventors: Steve Gapp, Clint Johnson, Reed Felton
  • Patent number: 8555751
    Abstract: A ratchet wrench includes a handle and a pawl is pivotably connected to the handle. The pawl is selectively engaged with a positioning unit in the handle. A ratchet wheel has a through hole defined through the center portion thereof and the ratchet teeth of the ratchet wheel are engaged with the engaging teeth of the pawl. Two clamp members are inserted in the through hole of the ratchet wheel and each have an extension. Each extension has a slot defined in top and bottom thereof. The two extensions extend toward opposite directions. Two ring-shaped covers are respectively connected to the top and the bottom of the ratchet wheel and each cover has two openings defined in the underside thereof. The extensions extend through the openings. Pins extend through the covers and are engaged with the slots. The clamp members are movable to clamp objects of different sizes.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: October 15, 2013
    Inventor: Shwu-Ruu Chern
  • Patent number: 8555752
    Abstract: A ratchet wrench includes a driving head, a retaining ring engaged in the driving head, a driving member rotatably engaged in the driving head and having a gear, and a pawl engaged in the driving head and having a lever arm extended from a shaft, and one or more teeth formed on the lever arm for engaging with the gear and for determining the driving direction of the driving member by the driving head and the handle, the shaft includes a slot for engaging with the retaining ring and for allowing the retaining ring to apply a spring biasing force onto the shaft and to force the teeth of the lever arm to engage with the gear.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 15, 2013
    Inventor: Yu Yen Chien
  • Patent number: 8522652
    Abstract: A ratchet wrench includes ratchet wheel rotatably received in a compartment of a body. A pawl is movably received in the compartment and includes a first side having a toothed section engaged with teeth of the ratchet wheel and a second side having a pressing face. A switch is pivotably mounted to the body and operatively connected to a first end of a spring. A second end of the spring presses against the pressing face of the pawl. The spring is a helical compression spring including an intermediate section between the first and second ends. Each of the first and second ends and the intermediate section includes a plurality of adjoining turns. The adjoining turns of the intermediate section are spaced from each other and form a compressible portion. The adjoining turns of the second end of the spring abut against each other and have no gaps therebetween.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: September 3, 2013
    Inventor: Tzu-Chien Wang
  • Publication number: 20130220082
    Abstract: A ratchet wrench includes a wrench body having a circular space defined at a head portion of the wrench body, a ratchet with a hollow center placed into the circular space. The ratchet is symmetric to the wrench body. The inner wall of the ratchet has a plurality of first ridges formed thereon. A first recess is formed between each of two adjacent first ridges. Each of the first recesses selectively has a second ridge formed thereon. A second recess is defined on the second ridge. The shape of the second recess is as same as the first recess. In this way, a user can directly alternate the big and small bolts in the ratchet wrench, rather than turn over the wrench to fit the big or small bolt.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Inventor: Yu-Tang Chen
  • Patent number: 8485069
    Abstract: A wrench with a ratchet device includes a wrench body, a driving set, a cover member and a controlling member. A hole is opened on the wrench body. A receiving space is defined near the hole. An assembling groove is defined near the receiving space. The controlling member is assembled into the receiving space. The driving set has a ratchet and a driving block. The ratchet is assembled into the hole and the driving block is assembled into the receiving space. The driving block abuts against a bottom of the receiving space. The ratchet is engaged with the driving block. The controlling member has a switching member inserted into the assembling groove to move the driving block. Under this arrangement, when the ratchet engages with the driving block, the driving block is stable because the bottom of the receiving space abuts against the driving block.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: July 16, 2013
    Inventor: Yi-Fu Chen
  • Patent number: 8474351
    Abstract: A ratchet wrench has a through cavity in which a reversing lever is disposed. The reversing lever has a pair of protruding lips formed thereon opposite from one another. A cooperating ledge is formed on the head in the cavity and on the pawl which is adjacent to the reversing lever. A spring-loaded pusher is disposed longitudinally in a blind bore in the reversing lever and the pusher engages a pocket in the pawl. A cover plate is disposed on a shelf recessed on the bottom of the wrench and spaced apart from the reversing lever.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 2, 2013
    Assignee: Easco Hand Tools, Inc.
    Inventors: Robert L. Arnold, Richard P. Folkenroth
  • Patent number: 8464614
    Abstract: In a ratchet wrench handle, an operation piece is swingably supported by an axis in a handle head. Positive and reverse rotation claws are disposed on one and the other portions of a distal end surface of an operation piece. The operation piece is provided with a cam edge at its backward end surface. A pressing pin is provided in a switch member such that the pressing pin can freely move into and out of the switch member. The distal end of the pressing pin pressurely contacts with the cam edge through a force of a spring. The switch member is located on a line extended from an imaginary straight line running between the rotation axis of the rotation member and the axis of the operation piece.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: June 18, 2013
    Assignee: Ko-Ken Tool Co., Ltd.
    Inventor: Shoji Suzuki
  • Patent number: 8464616
    Abstract: A tool includes first, second and third rods which are pivotably and pivotably connected to each other. The first rod is pivotably connected between the second and third rods. Control members, resilient members and contacting members are located at the pivotal portions so as to control the first rod to be pivotable or positioned relative to the second and third rods.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: June 18, 2013
    Inventor: Man-Chi Chang
  • Publication number: 20130139655
    Abstract: A ratchet wrench includes a handle having a receiving hole, a ratchet wheel rotatably mounted in the handle, a direction controller pivotally mounted in the handle and provided at a periphery thereof with a guide groove, a pawl connected with the direction controller and engaged with the ratchet wheel, and a positioning member. When the direction controller is in a first position, a positioning ball of the positioning member is slidable to the receiving hole of the handle through the guide groove. When the direction controller is turned to a second position, the positioning ball is supported by a spring and engaged with a positioning notch of the direction controller so as to hole the direction controller in position.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 6, 2013
    Inventor: Chih-Min CHANG
  • Publication number: 20130118317
    Abstract: A ratchet wrench includes a handle, a ratchet wheel rotatably mounted in a head of the handle, a direction controller pivotally mounted in the head of the handle, and a pawl connected with the direction controller and engaged with the ratchet wheel. An O-ring is provided between the wall of a pivot hole of the handle head and the direction controller, such that the ratchet wrench is water and duct resistant so as to prevent the internal parts of the ratchet wrench from damage due to corrosion.
    Type: Application
    Filed: December 1, 2011
    Publication date: May 16, 2013
    Inventor: Chih-Min CHANG
  • Publication number: 20130112047
    Abstract: A ratchet wrench includes ratchet wheel rotatably received in a compartment of a body. A pawl is movably received in the compartment and includes a first side having a toothed section engaged with teeth of the ratchet wheel and a second side having a pressing face. A switch is pivotably mounted to the body and operatively connected to a first end of a spring. A second end of the spring presses against the pressing face of the pawl. The spring is a helical compression spring including an intermediate section between the first and second ends. Each of the first and second ends and the intermediate section includes a plurality of adjoining turns. The adjoining turns of the intermediate section are spaced from each other and form a compressible portion. The adjoining turns of the second end of the spring abut against each other and have no gaps therebetween.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Inventor: Tzu-Chien Wang
  • Patent number: 8424421
    Abstract: Disclosed therein is a jog-shuttle type ratchet wrench. The jog-shuttle type ratchet wrench includes: a body part having a round hole formed at one side thereof and a stopper embedded therein; a head part rotatably mounted in the round hole; a bevel gear having a first gear portion rotatably joined to one end portion of the control roller inside the housing and a second gear portion rotatably geared with the first gear portion in interlock with the rotation of the first gear portion; a rotary shaft located inside the housing and joined to the second gear portion; and a pair of jaws having an end portion inserted into the housing, wherein the head part is selectively rotated only in one direction when the ratchet gear engages with the stopper.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: April 23, 2013
    Assignee: World Tools Co., Ltd.
    Inventors: Byeong Ok Woo, Jae Soo Kim, Kwang-Hak Lee
  • Patent number: 8413550
    Abstract: A ratchet wrench (10) includes a head (12) having a compartment (121) rotatably receiving a drive member (12). An annular groove (126) is formed in an inner periphery of the compartment (121) and in communication with a recess (13) formed in a side (F2) of the head (12). A flange (2121) is formed on an outer periphery of the drive member (21) and intermediate a toothed portion (213) of the drive member (21) and an annular groove (214) formed in the outer periphery of the drive member (21). A flange (2121) is formed on the outer periphery of the drive member (21) and includes an inner end face (2122) facing a bottom face (133) of the recess (13). A C-clip (24) is received in the annular grooves (126, 214) and has two clamping portions (241) received in the recess (13). A dustproof cap (30) engaged in the recess (13) and located intermediate a bottom face (133) and the recess (13) and the inner end face (2122) of the flange (2121).
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: April 9, 2013
    Inventor: Bobby Hu
  • Patent number: 8402866
    Abstract: An open end wrench (10) includes first and second jaws (23, 24) formed on a jaw portion (22). The first jaw (23) includes an arcuate sliding groove (27) having two support walls (272, 273) and an arcuate sliding wall (271) between the support walls (272, 273). A slide (30) is received in the sliding groove (27) and includes an arcuate sliding face (31) slideable along the sliding wall (272). An arcuate guiding slot (35) is formed in the slide (30). A guide (28) is fixed in the sliding groove (27) and received in the guiding slot (35). The guiding slot (35) includes a pressing end (352). An elastic device (40) has two ends respectively abutting the guide (28) and the pressing end (352) of the guiding slot (35) for biasing the slide (30) to a natural position. The slide (30) includes a first wrenching face (32) having two wings (36). A spacing (L) is formed between each wings (36) and one of the support walls (272, 273).
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: March 26, 2013
    Inventor: Bobby Hu
  • Patent number: 8375830
    Abstract: A ratchet wrench includes a main body provided with a driving gear and a driven gear and having a receiving groove disposed with ratchet teeth on the inner wall. The driving gear is ball-shaped and has the outer wall of each gear tooth forming an arc-shaped surface, and a concave surface is formed between every two gear teeth of the driven gear to match the arc-shaped surface of the gear teeth of the driving gear. Each gear tooth of the driven gear is provided with plural ratchet teeth to be engaged with the ratchet teeth of the receiving groove. An interaction member is received inside the driven gear, having one end connected with an orientating member and another end positioned on a cover plate. A pressing piece is fixed on the interactive member and a spring is positioned between the pressing piece and the interactive member.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 19, 2013
    Inventor: Yueh-Ying Yang
  • Patent number: 8375828
    Abstract: A power driven ratchet wrench includes a handle, a working portion and a switch portion. The working portion includes a yoke, a ratchet head and a socket. The yoke is disposed on the handle and defines a receiving space therein, and it has a first through hole. The ratchet head is coupled with a transmission element and has a third through hole corresponding to the first through hole. The ratchet head is swayable about an axis of the socket. The switch portion includes a switching button and an engaging unit. The engaging unit stops the socket from relatively rotating in a first direction as the switching button locates at a first switch position. The engaging unit stops the socket from relatively rotating in a second direction as the switching button locates at a second switch position.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: February 19, 2013
    Assignee: Hyphone Machine Industry Co. Ltd.
    Inventor: Hsien Chung Chen
  • Patent number: 8347760
    Abstract: A ratchet device with stable structure includes a control unit, at least three receiving spaces defined on the top plane of the control unit, the receiving spaces communicating with each other, a pair of blockers and a elastomer located in each receiving space, a ratchet unit connected to the control unit, the ratchet unit having a spindle formed at one end thereof, a plurality of teeth formed around the periphery of the ratchet unit, the teeth engaged with the blockers of the control unit; a switching unit connected to the ratchet unit, at least three push sticks extruded from the bottom of the switching unit for pushing against the blockers. Therefore, the amounts of engaging faces among the blockers and the teeth are as enough as possible to make the engagement between the blockers and the teeth stable during an external torsion.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: January 8, 2013
    Inventor: Hon Tsao Yu
  • Patent number: 8312794
    Abstract: A ratcheting wrench having ratchet structure, a ratchet body, a socket wheel, and a ratchet clutch. The ratchet body is received into the ratchet structure and is rotatable about a first axis. The socket wheel is received in an aperture in the ratchet body and includes a plurality of tool members that are spaced circumferentially apart from one another about a second axis that intersects the first axis but is not coincident with the first axis. The ratchet clutch is configured to control relative rotation between the ratchet structure and the ratchet body about the first axis.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: November 20, 2012
    Assignee: Black & Decker Inc.
    Inventors: Robert J. B. Hobden, Jamie S. Munn, Martin Heckmann, Corey D. MacTavish, William G. Harman, Jr., David C. Campbell, Gregory R. Krier
  • Publication number: 20120272793
    Abstract: A ratchet wrench includes a handle; a wrench head comprising a first cavity and a second cavity communicating therewith; a drive gear and socket combination rotatably disposed in the first cavity and comprising surface teeth; a reversing pawl comprising pawl teeth on one surface, the pawl teeth meshed with the teeth of the drive gear and socket; a pivotal unit pivotably disposed in the second cavity, the pivotal unit urging against the other surface of the reversing pawl and being adapted to reciprocally pivot about the reversing pawl; and a reversing button assembly moveably disposed on the wrench hand and aligned with an axial direction of the handle. The reversing button assembly is adapted to manually move along a straight line to activate the pivotal unit which pivots the reversing pawl so as to permit the drive gear and socket combination to rotate clockwise or counterclockwise.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Inventor: Yi-Hung LIN
  • Patent number: 8245602
    Abstract: A ratchet wrench includes a wrench head having a pawl compartment formed between a notch and a chamber of the wrench head, a drive member mounted in the chamber of the wrench head and having a ratchet gear, a pawl slidably received in the pawl compartment of the wrench head for engaging with the ratchet gear and for controlling the driving direction of the drive member by the wrench head, a handle having a pivotal coupling member mounted in the notch of the wrench head, and an actuating member attached to the pivotal coupling member and engaged with the pawl for moving the pawl to either side of the pawl compartment of the wrench head in order to determine the driving direction of the drive member by the wrench head.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 21, 2012
    Inventor: Meng Tsung Chan
  • Patent number: 8230764
    Abstract: The present invention discloses a ratchet wrench, which includes a body, a driving head, a fixing disk and a rotatable member. The body has a ring-shaped head with internal teeth therein. The driving head is located in the ring-shaped head and has a top portion which has a reception recess and a pawl is located in the reception recess. The pawl has engaging teeth on two ends of the front thereof and two curved surfaces are formed on the back of the pawl. A spring is located in the reception recess so as to bias the back of the pawl. The rotatable member is located on the top of the ring-shaped head and has two driving pins which shift the spring to pivot the pawl such that the engaging teeth in one of the two ends of the pawl are engaged with the internal teeth to control the driving head to rotate in one direction.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: July 31, 2012
    Inventor: Hong-Jen Lee
  • Patent number: 8113092
    Abstract: A push-type ratchet wrench may be easily operated. At least one end of a handle has a head, in which a driving body for rotating a workpiece and an engaging block capable of selectively switching the rotation direction of the driving body are provided. Also, a control member for actuating the engaging block is provided on the head. The control member includes a base disposed in the head, and an actuating block pivotally mounted on the base. The actuating block has an actuating sheet passing through the base and extending toward the engaging block. A clamping slot is formed at a location corresponding to the engaging block so that the actuating sheet can be clamped by the engaging block, and the user can press the actuating block leftward/rightward to achieve the object of switching and to prevent the conventional problems of easily breaking and uneasily actuating.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: February 14, 2012
    Assignee: Re-Dai Precision Tools Co., Ltd.
    Inventor: Cheng-Han Lee
  • Patent number: 8109181
    Abstract: A ratchet screwdriver with an assembly of a handle (10), a body (17), a gear (56), a pawl (21, 22, 71), and a selector (27) movable on the assembly. The selector carries a pawl actuator (38, 81) for pivoting the pawl, and there is a rotation lock (42, 92) on the selector for releasably holding the rotated selector. The selector can be axially, and also rotationally, movable on the body for controlling the lock. The assembly is along an axis (A), and there are a member (44) and axial force appliers (62, 64) effective between the body and the member, thus restricting axial movement in the assembly. There is provision for assembly along the axis from adjacent the handle. There are modifications and an assembly method.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: February 7, 2012
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: 8096214
    Abstract: A ratcheting assembly for a tool comprising a housing, a gear supported by a hollow shaft located in the housing and a pawl to engage the gear. A ring in contact with the housing allows adjustment of the ratcheting assembly. The assembly can the releasably lock the tool within the ratcheting assembly by way of a locking mechanism located within the shaft. The assembly further has a compressible collar that will be used to release the tool from the ratcheting assembly.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: January 17, 2012
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Publication number: 20120000324
    Abstract: A tool includes a first bit receiving socket, a second bit receiving socket, and an angled metal structure. The angled metal structure includes a first end connected with the first bit receiving socket and a second end connected with the second bit receiving socket.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 5, 2012
    Applicant: STANLEY BLACK & DECKER, INC.
    Inventors: Thomas PELLETIER, Daniel Chang
  • Publication number: 20110296960
    Abstract: A reversible ratchet wrench includes a head and a handle, and a bore and a compartment formed in the head, a driving member includes a shank engaged in the bore of the head and a gear engaged in the compartment of the head, a pawl is pivotally mounted in the head and includes two engaging teeth for controlling the driving direction of the gear of the driving member relative to the head, the pawl includes two side seats and a middle seat, and a spring-biased projection is engageable with either of the side seats of the pawl for controlling the driving direction of the gear relative to the head, and is engageable with the middle seat of the pawl for disengaging the engaging teeth from the gear and for allowing the gear to be freely rotated relative to the head.
    Type: Application
    Filed: June 7, 2010
    Publication date: December 8, 2011
    Inventor: Ju Chen Chen
  • Patent number: 8056447
    Abstract: A ratchet wrench has a through cavity in which a reversing lever is disposed. The reversing lever has a pair of protruding lips formed thereon opposite from one another. A cooperating ledge is formed on the head in the cavity and on the pawl which is adjacent to the reversing lever. A spring-loaded pusher is disposed longitudinally in a blind bore in the reversing lever and the pusher engages a pocket in the pawl. A cover plate is disposed on a shelf recessed on the bottom of the wrench and spaced apart from the reversing lever.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: November 15, 2011
    Assignee: Easco Hand Tools, Inc.
    Inventors: Robert L. Arnold, Richard P. Folkenroth
  • Patent number: 8051746
    Abstract: A ratchet wrench has a handle and a ratchet housing that both extend along a first axis. A drive body is connected for rotation relative to the ratchet housing about a second axis, perpendicular to the first axis. A yoke substantially encircles the body and is connected to the ratchet housing and a direction selector is coupled to the drive body and extends along the second axis. The direction selector is rotatable about the second axis with respect to the drive body between a first position, in which the yoke is fixed for counterclockwise rotation with the drive body about the second axis, and a second position, in which the yoke is fixed for clockwise rotation with the drive body about the second axis. A direction actuator is connected to the direction selector for rotation about the first axis to move the direction selector between the first and second positions.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 8, 2011
    Assignee: Ingersoll Rand Company
    Inventors: James Francis Bouchard, Douglas Edward Souls, Jefferey Clifford Yaschur
  • Publication number: 20110239828
    Abstract: A ratcheting wrench having ratchet structure, a ratchet body, a socket wheel, and a ratchet clutch. The ratchet body is received into the ratchet structure and is rotatable about a first axis. The socket wheel is received in an aperture in the ratchet body and includes a plurality of tool members that are spaced circumferentially apart from one another about a second axis that intersects the first axis but is not coincident with the first axis. The ratchet clutch is configured to control relative rotation between the ratchet structure and the ratchet body about the first axis.
    Type: Application
    Filed: August 27, 2010
    Publication date: October 6, 2011
    Inventors: Robert J.B. Hobden, Jamie S. Munn, Martin Heckmann, Corey D. MacTavish, William G. Harman, JR., David C. Campbell, Gregory R. Krier
  • Patent number: 8024996
    Abstract: The invention relates to a hydraulic power wrench comprising a ratchet lever (16) driven by a hydraulic cylinder. According to the invention, said power wrench is provided with a friction brake (20) which operates continuously between the housing (10) and the output shaft (14). In this way, reversed rotations of the output shaft following the individual working strokes are avoided.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: September 27, 2011
    Assignee: Wanger Vermögensverwaltungs-GmbH & Co. KG
    Inventors: Paul-Heinz Wagner, Bernd Thelen, Andreas Niemietz, Klaus Rüssmann
  • Publication number: 20110209585
    Abstract: A wrench includes a body, a first driving head, a second driving head, a first ratcheting mechanism and a second ratcheting mechanism. The first ratcheting mechanism connects the first driving head to the body. The second ratcheting mechanism connects the second driving head to the body.
    Type: Application
    Filed: June 4, 2010
    Publication date: September 1, 2011
    Inventor: Chih-Ching HSIEH
  • Patent number: 7997168
    Abstract: An adjustable ratchet head assembly has first and second jaw members that are connected using a pinion shaft and a cogwheel shaft. The pinion shaft has oppositely threaded end portions that engage oppositely threaded pinion shaft receiving bores in a central section of each jaw member. The cogwheel shaft has oppositely threaded end portions that engage oppositely threaded cogwheel shaft receiving bores in a proximate end of each jaw member. A pinion gear is concentric with and engages the pinion shaft. A cogwheel gear is concentric with and engages the cogwheel shaft, and is in driving engagement with the pinion gear. Driving the cogwheel gear will cause rotation of the cogwheel shaft, pinion gear and pinion shaft, and will cause the jaw members to move toward or away from each other. The ratchet head assembly is received in a cylindrical ratchet head body, which is received in a handle assembly.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: August 16, 2011
    Inventor: Terry Kinskey
  • Publication number: 20110162488
    Abstract: A ratchet wrench includes a wrench head having a pawl compartment formed between a notch and a chamber of the wrench head, a drive member mounted in the chamber of the wrench head and having a ratchet gear, a pawl slidably received in the pawl compartment of the wrench head for engaging with the ratchet gear and for controlling the driving direction of the drive member by the wrench head, a handle having a pivotal coupling member mounted in the notch of the wrench head, and an actuating member attached to the pivotal coupling member and engaged with the pawl for moving the pawl to either side of the pawl compartment of the wrench head in order to determine the driving direction of the drive member by the wrench head.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 7, 2011
    Inventor: Meng Tsung Chan
  • Patent number: 7966912
    Abstract: A ratcheting wrench having ratchet structure, a ratchet body, a socket wheel, a plurality of ratchet teeth and at least one pawl. The ratchet body is received into the ratchet structure and is rotatable about a first axis. The socket wheel is received in an aperture in the ratchet body and includes a plurality of tool members that are spaced circumferentially apart from one another about a second axis that intersects the first axis but is not coincident with the first axis. The ratchet teeth and the at least one pawl cooperate to control relative rotation between the ratchet structure and the ratchet body about the first axis.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 28, 2011
    Assignee: Black & Decker Inc.
    Inventors: Robert J. B. Hobden, Jamie S. Munn, Martin Heckmann, Corey D. MacTavish, William G. Harman, Jr., David C. Campbell
  • Patent number: 7954402
    Abstract: A ratchet wrench includes a working head located forwardly on a handle. The working head has a body portion with a generally flat and generally uninterrupted upper surface and a cavity formed in an opposite lower surface with at least one actuator bore through the side wall of the body portion. A drive item is rotatably disposed in the cavity. A pawl item is disposed in the cavity to switch the drive direction of the drive item, and a pawl actuator pin is movably disposed in the actuator bore to switch the pawl. A retention plate may be used to mount the drive item and pawl item in the cavity plate. A quick release mechanism may include a longitudinally oriented and longitudinally slideable release actuator. The upper surface of the working head may be formed by the body portion or by a cover plate mounted thereto.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: June 7, 2011
    Inventor: Ted C. Crawford
  • Publication number: 20110107879
    Abstract: A ratchet wrench includes a head having a compartment rotatably receiving a drive member. A pawl groove is formed in an inner periphery of compartment and slideably receives a pawl. A switch is received in a switch grove in the head and pivotable about a pivoting axis. A control member is movable between two positions to control engagement between the pawl and the drive member through sliding movement of a guide of the switch in a control groove in the control member. The guide of the switch contacts the contact groove at a contact point when the control member is in either operative position. A tangent to an outer surface of the guide at the contact point has an angle not larger than 45° relative to a reference line extending perpendicularly to the pivoting axis and intersecting a longitudinal axis of the guide.
    Type: Application
    Filed: July 27, 2010
    Publication date: May 12, 2011
    Inventor: Bobby Hu
  • Patent number: 7938043
    Abstract: A ratchet wrench includes a drive member and a switch rotatably received in a body. A pawl is movably received in the body and has first and second sides. The second side of the pawl includes a pressing portion having upper and lower sections. The pressing portion further includes two pressing sections. Two positioning units are mounted between the switch and the second side of the pawl. The positioning units press against the upper and lower sections to bias the first side of the pawl to engage with the drive member. The positioning units press against one of the pressing sections corresponding to one of two positions of the switch.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: May 10, 2011
    Inventor: Bobby Hu
  • Patent number: 7934441
    Abstract: A combination tool includes a first tool component and a second tool component. A ratchet system enables the first tool component and the second tool component to be pivotally oriented relative to one another in a desired direction, and to be locked at desired relative orientation. A release mechanism enables the first tool component and the second tool component to be disengaged from one another for individual use.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: May 3, 2011
    Inventor: Lance N. Hyde
  • Publication number: 20110094349
    Abstract: A ratchet wrench has a through cavity in which a reversing lever is disposed. The reversing lever has a pair of protruding lips formed thereon opposite from one another. A cooperating ledge is formed on the head in the cavity and on the pawl which is adjacent to the reversing lever. A spring-loaded pusher is disposed longitudinally in a blind bore in the reversing lever and the pusher engages a pocket in the pawl. A cover plate is disposed on a shelf recessed on the bottom of the wrench and spaced apart from the reversing lever.
    Type: Application
    Filed: January 3, 2011
    Publication date: April 28, 2011
    Applicant: EASCO HAND TOOLS, INC.
    Inventors: Robert L. Arnold, Richard P. Folkenroth
  • Publication number: 20110079114
    Abstract: A ratchet device has a ratchet body, a rotating rod and a switching device. The ratchet body has a top and a central hole axially defined through the ratchet body. The rotating rod is mounted in the central hole and has a top and at least one lump notch defined on the top of the rotating rod. The switching device has a cover, a pivoting block and a switch. The cover is mounted securely on the top of the ratchet body and has a top. The pivoting block is mounted through the cover and abuts the top of the rotating rod and has a bottom and an eccentric lump. The eccentric lump protrudes from the bottom of the pivoting block and is inserted into one of the at least one lump notch. The switch is pivotally mounted in the cover and has a through hole mounted around the pivoting block.
    Type: Application
    Filed: October 6, 2009
    Publication date: April 7, 2011
    Inventor: CHING-HSIANG CHEN
  • Publication number: 20110067531
    Abstract: In order to avoid any unintended positive or reverse switch operation of a ratchet wrench handle A, an operation piece 9 is swingably supported by an axis in a handle head 1a; a set of operation claws 12 for positive rotation and those 13 for reverse rotation are disposed on one and the other portions of a distal end surface of said operation piece 9 that faces a rotation member 3; said operation piece 9 is also provided with a cam edge 16 recessed like an arc in the direction of said distal end surface; a pressing pin 15 is provided in a switch member 14 in such a manner that said pressing pin 15 can freely move into and out of said switch member 14, and contacts under pressure said cam edge 16 by way of a biasing force of a spring.
    Type: Application
    Filed: August 9, 2010
    Publication date: March 24, 2011
    Inventor: Shoji Suzuki
  • Publication number: 20110056336
    Abstract: A push-type ratchet wrench may be easily operated. At least one end of a handle has a head, in which a driving body for rotating a workpiece and an engaging block capable of selectively switching the rotation direction of the driving body are provided. Also, a control member for actuating the engaging block is provided on the head. The control member includes a base disposed in the head, and an actuating block pivotally mounted on the base. The actuating block has an actuating sheet passing through the base and extending toward the engaging block. A clamping slot is formed at a location corresponding to the engaging block so that the actuating sheet can be clamped by the engaging block, and the user can press the actuating block leftward/rightward to achieve the object of switching and to prevent the conventional problems of easily breaking and uneasily actuating.
    Type: Application
    Filed: November 2, 2009
    Publication date: March 10, 2011
    Inventor: Cheng-Han Lee
  • Patent number: 7861620
    Abstract: A ratchet wrench has a through cavity in which a reversing lever is disposed. The reversing lever has a pair of protruding lips formed thereon opposite from one another. A cooperating ledge is formed on the head in the cavity and on the pawl which is adjacent to the reversing lever. A spring-loaded pusher is disposed longitudinally in a blind bore in the reversing lever and the pusher engages a pocket in the pawl. A cover plate is disposed on a shelf recessed on the bottom of the wrench and spaced apart from the reversing lever.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 4, 2011
    Assignee: Easco Hand Tools, Inc.
    Inventors: Robert L. Arnold, Richard P. Folkenroth
  • Publication number: 20100275737
    Abstract: A bi-directional ratchet wrench includes a handle with a head at a front side formed a housing trough to hinge a ratchet wheel which has ratchet teeth on the perimeter and a knob strut jutting from one end surface, a switch element located in a swivel space formed at the housing trough with a plurality of harness teeth formed respectively on the left and right sides of a front end to allow the harness teeth on one side to engage with the ratchet teeth, and having a rear side formed with two concave portions, and confined at a selected swivel angle on the left and right sides by two retaining troughs formed in the swivel space, a butting unit having an elastic element embedded in the head and a spherical butting member butting the concave portions, and a sealing lid to seal the ratchet wheel and switch element.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 4, 2010
    Inventor: Chien-Yueh LIN
  • Patent number: 7823484
    Abstract: A reversible ratchet wrench includes a drive shank having a support base, a shell pivotally mounted on the support base, a ratchet wheel mounted in the shell and having a plurality of ratchet teeth, a pawl member having a first side provided with a driven face that is driven by the support base to move the pawl member relative to the ratchet wheel and a second side provided with a toothed engaging face meshing with the ratchet teeth. Thus, the user only needs to hold the support base to shake and drive the shell to pivot relative to the support base by the weight of the shell and the ratchet wheel so as to change the operation direction of the ratchet wheel, so that the user can change the operation direction of the ratchet wheel easily and quickly.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: November 2, 2010
    Inventor: Wei-Chu Chen
  • Publication number: 20100251860
    Abstract: A hand tool includes a head in which a driving member is received and a pawl is engaged with the driving member. A handle has a substantially round driving end which is rotatably received in a pivoting recess in the head and a pushing member protrudes from the driving end and is engaged with the pawl. The handle includes two contact sides which alternatively contact two outward tapered sidewalls of a driving recess in the driving end when operating the handle. The pawl is shifted to contact the driving member by the teeth at different positions of the pawl when operating the handle to change the driving direction of the driving member. No switching member is connected to the pawl and protrudes from the top surface of the head of the hand tool.
    Type: Application
    Filed: October 30, 2009
    Publication date: October 7, 2010
    Inventor: YUAN-CHIN CHI
  • Publication number: 20100251859
    Abstract: The present invention relates to the field of open-ended wrenches, and more specifically to a pawl component which can be used within ratchet wrench housings having conventional dimensions to create an inexpensive open-ended ratchet wrench which can be easily mass-produced.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 7, 2010
    Inventors: Steven Gapp, Clint Johnson
  • Publication number: 20100236363
    Abstract: A ratchet wrench includes a head having a compartment rotatably receiving a drive member. Two gaps are defined between the head and the drive member. The drive member includes a dust groove intermediate the gaps along an axis. The dust groove includes first and second faces spaced along the axis and a third face extending between the first and second faces. A dustproof seal is compressed and received in the dust groove to block communication between the gaps. The seal includes a ring having first and second surfaces spaced along the axis. An outer periphery of the seal presses against a peripheral wall of the compartment. A wing extends from one of the first and second surfaces of the ring, presses against one of the first and second faces of the dust groove, and is not in contact with the third face of the dust groove.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 23, 2010
    Inventor: Bobby Hu
  • Publication number: 20100186554
    Abstract: A wheel wrench includes a body, a head, a fitting, and a ratcheting mechanism. The head is connected to one end of the body, wherein the length direction of the head and the length direction of the body are neither orthogonal nor parallel. The fitting is for a socket. The ratcheting mechanism couples the fitting to the head, wherein the length of the ratcheting mechanism is greater than the width of the fitting.
    Type: Application
    Filed: March 22, 2010
    Publication date: July 29, 2010
    Inventor: Chih-Ching HSIEH