Reversing Patents (Class 81/62)
  • Patent number: 11311990
    Abstract: A ratchet wrench includes a fastener drive member and a rigid, one-piece frame having a handle portion extending along a longitudinal frame axis between a head portion and a finger loop. The fastener drive member has a pair of drive openings centered on the drive axis and facing in opposite directions, with each of the drive openings defined by one or more drive surfaces. One of the drive openings is sized to receive a fastener or driver bit of a first size and the other opening is sized to receive a fastener or driver bit of a second size greater than the first size. The finger loop has a finger receiving opening sized to receive and encircle a finger of a user. The fastener drive member is mounted in the head portion to rotate about a drive axis, and a ratchet mechanism is mounted in the head portion in operable connection to the fastener drive member to selectively transfer torque from the frame to the fastener drive member in either a clockwise or counterclockwise direction about the drive axis.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 26, 2022
    Assignee: Klein Tools, Inc.
    Inventor: Raul Rosales
  • Patent number: 10953525
    Abstract: A power wrench includes an output spindle and a socket member. The output spindle has an axial through hole that extends through the output spindle and that open at two axially opposite ends of the output spindle. The socket member is connected to one of the axially opposite ends and has a first socket hole aligned with the axial through hole and configured to engage a nut or the like. The axial through hole is configured to permit passage of a bolt when the nut is tightened by the socket member.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 23, 2021
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng, Ying-Chih Wang
  • Patent number: 10800012
    Abstract: A ratchet head has a mount, a knob, and a restricting unit. The mount has an assembling hole, and two positioning recesses disposed on both sides of the assembling hole. The two positioning recesses are parallel to each other and communicate with the assembling hole. The knob is rotatably assembled to the mount and has a shaft inserted in the assembling hole and having an abutting section with two first abutting faces and two second abutting faces. The two first abutting faces are parallel to each other. The two second abutting faces are parallel to each other. The restricting unit with elasticity has two arms respectively mounted in the two positioning recesses, respectively disposed on both sides of the shaft, and respectively abutting against the two first abutting faces that respectively face to the two positioning recesses. The restricting unit is able to steadily maintain the operating directions of the ratchet head.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 13, 2020
    Inventor: Ming Ta Cheng
  • Patent number: 10766125
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 8, 2020
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Patent number: 10434636
    Abstract: A push-pull bit detaching and mounting tool including a casing is described herein. A ratchet wheel seat having a conveying passage is disposed at an end portion of the casing. A ratchet wheel head having bit mounting holes is disposed on the ratchet wheel seat. A ratchet wheel control mechanism is disposed between the ratchet wheel head and the ratchet wheel seat. An accommodating groove is formed on the casing. A bit storage seat is disposed in the accommodating groove. A plurality of storage holes are formed on the bit storage seat in the circumferential direction. A positioning structure is disposed between the bit storage seat and the accommodating groove. The casing has a mounting seat. A push-pull rod having a first permanent magnet at an end portion is disposed on the mounting seat, and an axial positioning mechanism is disposed between the push-pull rod and the mounting seat.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: October 8, 2019
    Assignee: SHAOXING HUANZHOU TOOLS CO., LTD
    Inventor: Boyong Wang
  • Patent number: 10272549
    Abstract: The ratchet wrench comprises a functional head (1) and a handle (2) hingedly connected to each other, a ratchet toothed wheel (4) rigidly attached to the functional head (1), a movable ratchet pawl (5) installed on the handle (2), a working spring (6) that biases the ratchet pawl (5) against the ratchet wheel (4), a movable releasing member (7) installed on the handle (2) and manually operable to move the ratchet pawl (5) to a position out of engagement with the ratchet wheel (4), and a movable locking element (69) installed on the handle (2) and manually operable between a rest position, in which it does not interfere with the ratchet pawl (5), and a locking position, in which it comes into contact with the ratchet pawl (5) holding it in said engaged position with the ratchet wheel (4).
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: April 30, 2019
    Assignee: Emilio BLASCO MONTER
    Inventors: Emilio Blasco Monter, Sergio Oliver Lagardera
  • Patent number: 10232496
    Abstract: A locking structure for a hand tool contains: a body including a driving head. The driving head has an accommodation cavity and a notch, and the accommodation cavity has a trench and an indentation. A fixer is accommodated in the indentation and has a limiting groove, a cutout, a post, and a recess. A second actuation member is housed in the limiting groove and has a locking portion, a locating portion, a protrusion, a control portion, a first aperture, and a second aperture. A release button is accommodated in the notch and has a tough for housing a retaining element. Furthermore, a first stop ring is located under the second actuation member and is configured to separate the second actuation member from the first actuation member, a ratchet rotation block is fixed under the first stop ring, and a second stop ring is mounted under the ratchet rotation block.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 19, 2019
    Inventor: Ting-Kai Chang
  • Patent number: 9662773
    Abstract: A bidirectional ratchet structure includes a base, a first pawl element, a second pawl element, two reset elements, a direction controller and a driving element. The first pawl element, the second pawl element, the direction controller and the driving element are pivotally disposed at the base. The first pawl element includes a first engaging portion. The second pawl element includes a second engaging portion. The first engaging portion and the second engaging portion are pushed to protrude from the base alternatively. The two reset elements are for pushing the first engaging portion and the second engaging portion to protrude from the base respectively. The first pawl element and the second pawl element are surrounded by the direction controller and the driving element. The direction controller is for pressing the first pawl element or the second pawl element toward the base.
    Type: Grant
    Filed: December 22, 2013
    Date of Patent: May 30, 2017
    Assignee: KABO TOOL COMPANY
    Inventor: Chih-Ching Hsieh
  • Patent number: 9527193
    Abstract: A double ratchet structure includes a base, a first directional member, a second directional member, two resetting members, a choosing member, a driving member and a pivoting member. The first and second directional members are pivotally disposed on the base, and the first directional member pivots oppositely to the second directional member. The resetting members are respectively disposed between the first or the second directional member and the base for protruding the first or the second directional member from the base. The choosing member is coaxially and pivotally disposed on the base and covers the first and the second directional members. The choosing member catches the first or the second to pivot toward the base. The driving member is coaxially and pivotally disposed on the base through the pivoting member for engaging with the first or the second directional member.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: December 27, 2016
    Assignee: KABO TOOL COMPANY
    Inventor: Chih-Ching Hsieh
  • Patent number: 9333628
    Abstract: A driving end of a tool includes a body including a chamber. A first engaging member is rotatably disposed in the chamber and defines a first engaging section. A second engaging member is rotatably disposed in the chamber and defines first and second engaging ends. The first engaging section is engaged with the first engaging end. At least one pawl is slidably disposed in the chamber and defines a first engaging portion. The second engaging end is selectively engaged with the first engaging portion. A switch is pivotally engaged with the body and abutted against the at least one pawl.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 10, 2016
    Assignee: New Way Tools Co., Ltd.
    Inventor: Ping-Wen Huang
  • Patent number: 9205538
    Abstract: A ratchet wrench includes: a main body having a first accommodating space; a tool head disposed removably within the first accommodating space and having an annular groove formed in an annular peripheral surface thereof, and a ratchet tooth portion; a direction control unit including a pawl block, the pawl block having a middle portion connected pivotally to the main body, and two pawl tooth portions flanking the middle portion; and a covering unit including a mounting plate, and an insert member disposed movably on the mounting plate and biased to engage the annular groove.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: December 8, 2015
    Inventor: Wen-Hung Yang
  • Patent number: 9162346
    Abstract: A multiple size socket is provided with a base, a socket body, and a positioning unit. The base is provided with a connecting portion, two pivot portions and a pivot hole formed in each of the pivot portions. The socket body is pivoted between the two pivot portions and includes a plurality of engaging cavities and an inserting hole aligned with the two pivot holes. The positioning unit is inserted in the two pivot holes and the inserting hole. The engaging cavities are different in size and shape from one another, so that the socket is capable of driving different sized fasteners.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: October 20, 2015
    Assignee: INFAR INDUSTRIAL CO., LTD.
    Inventor: Ander Chen
  • Patent number: 9156143
    Abstract: A ratcheting tool and a method of using the same, the ratcheting tool being formed by a handle, a substantially perpendicular cylinder and a ratcheting mechanism. The cylinder is adapted to be positioned over a nut or bolt head and comprises jaws adapted to engage the nut or bolt head when pushed laterally theretowards. When the arm is squeezed with the handle, a slider block is pushed towards the nut or bolt head causing the jaws to laterally engage the nut or bolt head. The ratcheting mechanism is between the cylinder and the jaws and allows torque to be applied to the nut or bolt head in a desired direction when the handle is moved in a circular motion around the main axis of the cylinder. The jaws are allowed to rotate within the cylinder in a direction opposite to the desired direction.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: October 13, 2015
    Inventor: Horatiu Daniel Chiriac
  • Patent number: 9120208
    Abstract: A handled ratcheting tool is able to be used in a standard, L handle or T handle orientation. The handled ratcheting tool includes a handle, a stem, a ratcheting mechanism and multiple tools. Multiple tools are coupled to the ratcheting mechanism which are able to form the L and T configurations depending on which tools are positioned in an open position and which are in a closed position.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: September 1, 2015
    Assignee: WAGIC, INC
    Inventors: Ronald L. Johnson, Yugen Patrick Lockhart
  • Patent number: 9115773
    Abstract: A driving end of a tool includes a body including a chamber and a bore. The chamber includes first and second pawls disposed therein. A first engaging member is rotatably disposed in the chamber and defines a first engaging section with a plurality of teeth. A second engaging member is rotatably disposed in the chamber and defines first and second engaging areas. The first engaging section is engaged with the first engaging area. The first and second engaging areas are selectively engaged with the first and second pawls. A switch includes an activating member inserted through the bore and received in the second engaging member and operably rotatable to first and second positions selectively.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 25, 2015
    Assignee: New Way Tools Co., Ltd.
    Inventor: Ping-Wen Huang
  • Patent number: 9108304
    Abstract: A ratchet screwdriver includes a handle, a shaft and a ratchet switch device. The shaft is connected to the front end of the handle and a mounting member is connected to the handle so as to be connected with the shaft. The ratchet switch device is located in the chamber in the rear end of the handle and includes a base, a frame, two engaging members, a positioning member, a resilient plate, two positioning pieces, and a ratchet member a switch. The shaft can be replaced by operating the mounting member on the handle. The switch on the rear end of the handle can change the direction of the ratchet member to output torque via the shaft.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: August 18, 2015
    Inventor: Jin Tsai Lai
  • Patent number: 9038507
    Abstract: A dual-pawl ratchet wrench mechanism is disclosed having a stop mechanism for limiting over-travel of a reversing lever for selecting drive directions. The stop mechanism is formed on a disc is selectively engageable with first and second pawls to move the pawls into and out of engagement with a ratchet gear to determine a torque drive direction, the ratchet gear capable of providing torque to a working piece in the selected drive direction. The design simplifies manufacturing. Additionally, the reversing lever is assembled with the mechanism in a manner to improve sealing.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: May 26, 2015
    Assignee: Snap-on Incorporated
    Inventors: Christopher Thompson, Michael Foster
  • Patent number: 9038505
    Abstract: A wrench includes a body having a working end which has a first toothed portion, a first room, a second room, a third room and a first pivot cavity. The second and third rooms open through the top of the body. A driving unit is pivotably connected to the working end and has a first recess and a second recess for receiving a first pawl and a second pawl therein. The first pawl has teeth engaged with the first toothed portion, and the second pawl has teeth engaged with a second toothed portion of a first teeth disk in the first room. A second teeth disk is pivotably located in the second room and has a forth toothed portion which is engaged with a third toothed portion of the first teeth disk. A shaft is pivotably located in the third room and is connected to the second teeth disk.
    Type: Grant
    Filed: July 28, 2013
    Date of Patent: May 26, 2015
    Inventor: Ya-Lan He
  • Patent number: 9038506
    Abstract: A socket wrench with a positioning device contains: a body including an accommodating cavity, a first face, and a second face. A toothed holder is accommodated in the accommodating cavity and has a polygonal groove, a first circular portion, a second circular portion, and a ratchet protrusion between the first circular portion and the second circular portion. The first circular portion is inserted to the first face, the second circular portion is inserted to the second face, and the ratchet protrusion engages with a ratchet device. A positioning device includes at least one retaining element disposed on the first circular portion and horizontally moving in the polygonal groove. The first circular portion has a resilient element and a pressing loop which are fitted on the first circular, and the pressing loop has a recess defined on an inner face thereof to correspond to the at least one retaining element.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: May 26, 2015
    Inventors: Miao-Chi Huang, Jen-Kai Li
  • Publication number: 20150122088
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, four pawls and four springs. The mounting seat has a space, two first slots and two second slots. A passage is defined through the mounting seat. The first slots each have a first hole and the second slots each have a second hole. The driving shaft has a ratchet portion located in the space. The four pawls are biased by the four springs so as to be engaged with the ratchet portion. The fixing ring is connected to the mounting seat and the four pawls are pivotably connected to the fixing ring. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventor: Chiung-Chang Tsai
  • Patent number: 9016174
    Abstract: A ratchet wrench includes a reception hole defined through the function end of the wrench and a recess is defined in the inner periphery of the reception hole. A ratchet wheel is rotatably located in the reception hole. A pawl, a restriction member and a resilient member are received in the recess. The two ends of the resilient member respectively contact the pawl and the restriction member to bias the pawl to be engaged with the ratchet wheel. A restriction ring is located in the reception hole and has a rod extending therefrom, the rod extends into the recess. The restriction member is located between the rod and the inner periphery of the recess.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 28, 2015
    Inventors: Tsan-Chang Lee, Yueh-Li Wang
  • Patent number: 9010509
    Abstract: A powered ratchet drive for a ratchet wrench includes a pair of elongate pawls for driving an output member of the wrench. Each pawl may have a lower portion pivotally attached to a rocker and an upper portion comprising teeth for engagement with teeth of the output member to turn the output member. The upper portion of the pawl extends outward at an angle with respect to the lower portion. The ratchet may include a compression spring secured inside a cavity of each pawl for biasing the pawl into engagement with the output member. The ratchet also includes a reversing switch mechanism for selectively configuring the ratchet in a forward-driving configuration and in a reverse-driving configuration. The switch mechanism includes a cam disposed between the pawls. The cam has a groove for receiving one of the pawls during operation depending on the configuration of the ratchet.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 21, 2015
    Assignee: SP Air Kabushiki Kaisha
    Inventor: Shigeki Kobayashi
  • Patent number: 8991285
    Abstract: The invention provides a ratchet tool that includes a tool head, a drive including a sun gear, a ratchet mechanism, and planet gears mounted to a carrier and meshed with the sun gear. The tool head has drive teeth meshed with the planet gears. The ratchet mechanism is mounted to the tool head and is operative to directly couple the tool head to the input when the tool head is rotated in a first direction and to uncouple the tool head from the input when the tool head is rotated in a second opposite direction. Rotation of the tool head in the second direction, while the user holds the carrier stationary, rotates the drive in the first direction.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: March 31, 2015
    Inventor: Ernest A. Mennecke, IV
  • Publication number: 20150059533
    Abstract: A reversible ratchet wrench includes a driving member received in a receiving space of a body, rotatable about a rotational axis relative to the body, and having an annular toothed portion. First and second pawls are aligned with each other along an axis parallel to the rotational axis and are alternatively disposed. The first and second pawls are received in a compartment in the body. One of the first and second pawls selectively meshes with the driving member. Each of the first and second pawls includes a ratcheting portion. The ratcheting portions selectively mesh with the annular toothed portion. A control member is pivotably received in the compartment. An end of the control member presses against the first and second pawls when the reversible ratchet wrench is switched between first and second positions. The control member can be actuated to move the first and second pawls.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventor: Ping-Wen Huang
  • Publication number: 20150059532
    Abstract: A selectively one-way wrench includes a handle, a socket, a pawl and a switch. The handle includes a grip, a head in a plane other than that of the grip, a transient portion extending to the head from the grip, and a recess in the head near the transient portion. The socket includes a series of teeth placed in the head. The pawl includes two pawls placed in the head and a spring for interconnecting the pawls. Each of the pawls includes teeth for engagement with the teeth of the socket. The switch includes a sliding unit movable between two positions for engagement with the pawls and a finger-contacting element extending from the sliding unit. The finger-contacting element is placed in the recess except an upper end placed above the grip.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 5, 2015
    Inventor: Hui-Ling CHANG
  • Patent number: 8893589
    Abstract: A ratchet including a handle and a head connected to the handle. The ratchet further includes a rotating drum rotationally mounted within the head. A top edge of the rotating drum is open and a bottom edge of the rotating drum is closed by a surface. A rotating head extends from the surface of the rotating drum. One or more pawls within the head interact with the rotating drum to drive the rotating drum and rotating head in a first direction or a second direction in response to a force being applied to the handle. The ratchet includes a direction toggle connected to the one or more pawls being operable to engage the one or more pawls for selecting to drive the rotary head of the rotating drum in the first direction or the second direction corresponding to a first position or a second position of the direction toggle, respectively.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: November 25, 2014
    Inventor: Ivan Kibby
  • Patent number: 8893590
    Abstract: A ratchet wrench adjustable in clamping size is provided with a body, a ratchet wheel, an adjustment member, two engaging members and a spring. The body includes a head portion, a handle and a switch member. The two engaging members are oppositely located on the ratchet wheel and the adjustment member and each include an engaging portion, a neck portion connected to the engaging portion and located in the ratchet wheel, and an upper portion connected to the neck portion and located in the adjustment cavity of the adjustment member. By such arrangements, rotating the rotating portion of the adjustment member adjusts relative positions of the upper portions of the two engaging members in the adjustment cavity of the adjustment member, and makes the neck portions of the engaging members to move along the guide slot so as to change a distance between the two engaging portions.
    Type: Grant
    Filed: March 9, 2013
    Date of Patent: November 25, 2014
    Assignee: Infar Industrial Co., Ltd.
    Inventor: Ander Chen
  • Patent number: 8806986
    Abstract: A ratchet wrench includes a wrench head, a ratchet assembly and a bushing. The wrench head is made of metal and defines a cavity therein. The ratchet assembly is disposed in the cavity of the wrench head and has an outer configuration corresponding in shape to a periphery of the cavity of wrench head and being slightly smaller than the cavity of the wrench head. The bushing is made of a metal with a hardness greater than that of the wrench head and is fitted in a clearance defined between the ratchet assembly and an inner wall of the cavity of the wrench head. Moreover, the bushing has a substantially consistent thickness so that the bushing has an outer periphery and an inner periphery both corresponding in shape to the periphery of the cavity.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 19, 2014
    Inventor: Yi-Fu Chen
  • Patent number: 8806985
    Abstract: A reversing device for a ratchet wrench comprises a body of the ratchet wrench, a ratchet wheel, a left engaging member, a right engaging member, a left spring, a right spring, a control member, and a control cover. Both of the left and right engaging members, when subjected to a force, will not be in contact with the control member, so that, the problem that the left or right engaging member, when subjected to a force, will push the control member to reversely rotate and cause slippage, can be solved.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: August 19, 2014
    Inventor: Bo-Shen Chen
  • Publication number: 20140224079
    Abstract: A double ratchet structure includes a base, a first directional member, a second directional member, two resetting members, a choosing member, a driving member and a pivoting member. The first and second directional members are pivotally disposed on the base, the first directional member pivots oppositely to the second directional member. The resetting members are respectively disposed between the first or the second directional member and the base for protruding the first or the second directional member from the base. The choosing member is coaxially and pivotally disposed on the base and covers the first and the second directional members. The choosing member catches the first or the second to pivot toward the base. The driving member is coaxially and pivotally disposed on the base through the pivoting member for engaging with the first or the second directional member.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 14, 2014
    Applicant: KABO TOOL COMPANY
    Inventor: Chih-Ching HSIEH
  • Publication number: 20140224078
    Abstract: A bidirectional ratchet structure includes a base, a first pawl element, a second pawl element, two reset elements, a direction controller and a driving element. The first pawl element, the second pawl element, the direction controller and the driving element are pivotally disposed at the base. The first pawl element includes a first engaging portion. The second pawl element includes a second engaging portion. The first engaging portion and the second engaging portion are pushed to protrude from the base alternatively. The two reset elements are for pushing the first engaging portion and the second engaging portion to protrude from the base respectively. The first pawl element and the second pawl element are surrounded by the direction controller and the driving element. The direction controller is for pressing the first pawl element or the second pawl element toward the base.
    Type: Application
    Filed: December 22, 2013
    Publication date: August 14, 2014
    Applicant: KABO TOOL COMPANY
    Inventor: Chih-Ching HSIEH
  • Patent number: 8776640
    Abstract: A ratchet wrench includes a head having a first compartment rotatably receiving a drive member. A second compartment is defined in an inner periphery of the first compartment and receives first and second pawls. A switch is pivotably mounted in a control groove of the head and controls engagement relations between the first and second pawls and the drive member. A limiting member is connected between the first and second pawls and maintains two closest teeth respectively of first and second toothed sections of the first and second pawls to be in a restraining spacing that is smaller than a jam spacing, preventing the first and second pawls from jamming between the drive member and a wall of the second compartment.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: July 15, 2014
    Inventor: Bobby Hu
  • Patent number: 8757031
    Abstract: A pneumatic driven ratchet wrench comprises: a wrench housing; a pneumatic motor; a ratchet wheel unit; two gear members; an urging member for biasing the gear members to engage the ratchet wheel; a transmission unit connected to the gear members and driven by the pneumatic motor; and a gear-selecting unit including an operating knob, a switching member and two pushing members. The operating knob is mounted on the wrench housing and is disposed distal from a head section of the wrench housing for driving movement of the pushing members. Each of the pushing members pushes a respective one of the gear members to move away from the ratchet wheel unit when moved from a releasing position to a pushing position.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 24, 2014
    Assignee: Basso Industry Corp.
    Inventor: San-Yih Su
  • Publication number: 20140150611
    Abstract: A one-way torque tool includes a head, a rotor placed in the head, a number of ratchets formed on the head, two pawls pivotally connected to the rotor and detachably engaged with the ratchets. The ratchets are separated from one another by a first angle ? identical to 360 degrees divided by the number of the ratchets. The pawls are separated from each other by a second angle ? identical to a multiple of the first angle ? plus a third angle ? that is smaller than the first angle ?.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Inventor: Yi Min WU
  • Patent number: 8726766
    Abstract: A one-way torque tool includes a head, a rotor placed in the head, a number of ratchets formed on the head, two pawls pivotally connected to the rotor and detachably engaged with the ratchets. The ratchets are separated from one another by a first angle ? identical to 360 degrees divided by the number of the ratchets. The pawls are separated from each other by a second angle ? identical to a multiple of the first angle ? plus a third angle ? that is smaller than the first angle ?.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 20, 2014
    Assignee: Matatakitoyo Tool Co., Ltd.
    Inventor: Yi Min Wu
  • Patent number: 8683894
    Abstract: A positioning structure for a ratchet wrench contains a ratchet wrench including a driving head, a receiving cavity, a first groove, a second groove, and a hole. The receiving cavity has a driving member, and the driving member having a toothed portion. The first groove has two opposite retaining blocks each having a plurality of locking teeth so as to engage with the toothed portion and having an orifice and a receiving aperture, and between two receiving apertures is defined a first resilient element. The second groove has a directional control member mounted, and the directional control member has a limiting portion, a recessed portion, an actuation portion, and a shaft, wherein a second resilient element is fitted onto the shaft and is inserted into the hole of the second groove, and the actuation portion is inserted into two orifices of the two retaining blocks.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: April 1, 2014
    Inventors: Yu Wen Chen, Tien Sung Chen
  • Patent number: 8650991
    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: Grant
    Filed: April 29, 2011
    Date of Patent: February 18, 2014
    Inventor: Yi-Hung Lin
  • Publication number: 20140041489
    Abstract: A ratchet socket tool includes a socket member having an internal gear, a driving member rotatably engaged in the socket member, two retaining rings engaged in the socket member, and a pawl engaged in the socket member and having a lever arm extended from a shaft, and one or more teeth formed on the lever arm for engaging with the internal gear, the shaft includes two end segments extended beyond the lever arm for forming two engaging surfaces and for engaging with the retaining rings and for allowing the retaining rings to apply a spring biasing force onto the end segments of the shaft and to force the teeth of the lever arm to engage with the internal gear.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 13, 2014
    Inventor: Yu Yen CHIEN
  • Patent number: 8616095
    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: Grant
    Filed: October 30, 2009
    Date of Patent: December 31, 2013
    Inventor: Yuan-Chin Chi
  • Patent number: 8596168
    Abstract: The invention comprises a ratchet style open end wrench which incorporates an assembly to provide a torqueing function and ratchet effect. The assembly includes a wrench body capable of providing torque delivery through two or more rotating cylindrical cams which contact the nut. The cylindrical cams then rotate when reversing the direction of the wrench assembly so that a cutout portion of the cylindrical cams allows the nut points to pass by. In one embodiment, the direction of the ratchet effect is reversible by a reversing arc wire which is activated by use of a lever.
    Type: Grant
    Filed: November 24, 2012
    Date of Patent: December 3, 2013
    Inventor: Chi Sung Row
  • 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: 8522651
    Abstract: A ratcheting mechanism includes a main body having an annular ring and two channels on opposite sides of the main body extending toward the annular ring. The two channels are adapted to receive pawls rotatably urged outward by a biasing element to selectively engage ratcheting teeth. An adjusting ring is positioned over the main body. The position of the adjusting ring determines the operational direction by selectively disengaging one of the pawls. The main body has an engagement end fixing the ratcheting mechanism to a handle body.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: September 3, 2013
    Assignee: Meridian International Co., Ltd.
    Inventor: ZhiMing Xu
  • Patent number: 8516927
    Abstract: A socket wrench includes a handle having a housing and a grip portion, a drive shank having a ratchet wheel mounted in the housing, two pawl members engaged with the ratchet wheel, a switching member located between the pawl members, two elastic members each biased between the housing and the respective pawl member, a control knob connected with the switching member, a driven arm having a mounting sleeve and an arcuate mounting slot, a connecting plate provided on the handle, and two driving arms provided on the connecting plate and received in the mounting slot. When in use, one of the driving arms drives the driven arm by a leverage to drive the drive shank to rotate a socket so as to operate a workpiece in an energy-saving manner.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: August 27, 2013
    Inventors: Yen-Hui Wang, Sin-Heng Wang, Chin-He Wang
  • Patent number: 8516928
    Abstract: A ratchet wrench includes a head having a first compartment rotatably receiving a drive member. A second compartment is defined in an inner periphery of the first compartment and receives first and second pawls. A switch is pivotably mounted in a control groove of the head and controls engagement relations between the first and second pawls and the drive member. A limiting member is connected between the first and second pawls and maintains two closest teeth respectively of first and second toothed sections of the first and second pawls to be in a restraining spacing that is smaller than a jam spacing, preventing the first and second pawls from jamming between the drive member and a wall of the second compartment.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: August 27, 2013
    Inventor: Bobby Hu
  • Patent number: 8511206
    Abstract: A ratchet wrench includes a body, a driving head, a control member and a resilient member. The body includes a handle and a Y-shaped extension. The driving head is pivotably connected to the Y-shaped extension by two pivots and an inner groove and a recess are respectively defined in the inside of the Y-shaped extension. The inner groove accommodates the C-shaped plate of the control member and the resilient member is received in the recess. The C-shaped plate has engaging teeth defined in distal ends thereof and the pivots each have ratchet teeth which are engaged with the engaging teeth by moving the control member so as to control the rotation of the driving head relative to the body.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 20, 2013
    Inventor: Ming-Nan Hong
  • Patent number: 8495931
    Abstract: A ratchet wrench is provided comprising a wrench handle with a head. A ratchet member has a plurality of ratchet teeth and is seated in the head for rotation about an axis. A pawl disposed within the head is adapted to pivot relative to the ratchet member. The pawl is provided with first and second pluralities of pawl teeth disposed for movement into and out of engagement with the ratchet teeth. A selector mechanism selectively pivots the pawl to move a selected one of the first and second pluralities of pawl teeth into engagement with the ratchet teeth. In one example, the selector mechanism can selectively permit the ratchet member to perform at least three functions.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: July 30, 2013
    Inventor: John S. Sroka
  • Patent number: 8485068
    Abstract: A wrench having a handle and ratchet assembly and a socket wheel. The handle and ratchet assembly has a handle and a first drive member that is rotatable relative to the handle. The socket wheel has a plurality of tool members, a plurality of first lugs and a plurality of second lugs. Each tool member is fixedly coupled to a pair of the first lugs and a pair of the second lugs. An adjacent pair of the tool members share a single one of the second lugs and no adjacent pair of the tool members shares any of the first lugs.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: July 16, 2013
    Assignee: Black & Decker Inc.
    Inventor: David C. Campbell
  • Patent number: RE44655
    Abstract: A ratcheting tool such as a reversible dual-pawl ratchet wrench is disclosed that minimizes wasted motion during ratchet slip or counter-rotation. The ratchet wrench includes a bias assembly that biases the pawls apart to bias a first, selected pawl for a selected drive direction towards engagement with a ratchet gear, and that the biases the selected pawl into a concentric alignment with the ratchet gear. In this manner, non-ratcheting initial rotation of the pawl due to counter-rotation prior to the pawl camming out of engagement with the ratchet gear is eliminated, thus eliminating wasted motion and maximizing the available angular sweep for the wrench.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: December 24, 2013
    Assignee: Snap-On Incorporated
    Inventors: David T. Ross, Steven R. Wente