Single Patents (Class 81/63)
  • Patent number: 10828134
    Abstract: The present invention is a dental implant tool comprising of a handle and a head portion connected to each other via a hinge facilitating the head to pivot relative to the handle to enable the dentist to reach various positions within a patient's mouth. The head portion configured to retain an abutment, an impression coping or healing abutment during a dental procedure and can be moved to the left and the right up to 90 degrees. The head comprises a rotatable ratchet with a key-shape center hole to hold an abutment in place while affixing the abutment to an implant and provides a complete access to implant-driver tip to the screw head, regarding to any abutment-body angulation, position and screw access hole. The inner wall of the center hole has 3°-degree convergences at any plan of the walls in order to grasp, lock and hold implant abutments.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: November 10, 2020
    Inventor: Amirhossein Majidi
  • Patent number: 10800011
    Abstract: A ratchet wrench comprising a ratchet head with a cylindrical bore having a central axis; a handle; a drive member (26) with a rotation axis (W-W) retained within the cylindrical bore for rotation about the central axis; and a toothed ratchet pawl (42); a cylindrical array of straight ratchet teeth arranged about one of the cylindrical bore or the drive member; and a pawl recess (36) arranged to support the pawl. The pawl may mesh with the ratchet teeth for transmission of rotation of the handle in a first direction to the drive member about the rotation axis or disengage from the ratchet teeth to decouple rotation of the handle in a second direction from the drive member. Support (37a, 37b, 46, 48, 50) for the pawl in the recess is shaped to accommodate divergence between the central axis and the rotation axis.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: October 13, 2020
    Assignee: Stanley Black & Decker MEA FZE
    Inventor: Jean Christophe Herisse
  • Patent number: 10773363
    Abstract: An adjustable ratchet wrench includes a wrench body, a ratchet, a positioning member, and a movable device. A fixed clamp portion is disposed on the inner periphery of the ratchet. The positioning member is disposed on the inner periphery of the ratchet. The movable device is disposed on the inner periphery of the ratchet and movably connected with the positioning member. The movable device has a movable clamp portion, which forms a tool receiving hole with the fixed clamp portion for receiving a workpiece. By used of the movable device, the size of the tool receiving hole is adjusted for being applicable to workpieces with different sizes, facilitating the utility of the present invention.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: September 15, 2020
    Inventor: Hung-Chiang Liao
  • Patent number: 10618146
    Abstract: A wrench has a wrench body, a control member, a braking toothed member and a ratchet wheel. The wrench body has a first and a second operating portions. The first operating portion has an assembling aperture and a control aperture, a control member having a handle and a shaft rod, the shaft rod provided with a stepped through hole and disposed in the control aperture; a braking toothed member disposed in the arcuate groove, an end of the braking toothed member has a toothed portion and a convex groove, the convex groove connected to a link shaft via a connecting pin, the link shaft jacketed by an elastic member and together disposed in the through hole. The ratchet wheel disposed in the assembling aperture, an annular toothed portion disposed on a periphery of the ratchet wheel and engaging with the toothed portion of the braking toothed member.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: April 14, 2020
    Inventor: Cheng-Cheng Huang
  • Patent number: 10543586
    Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a ring, a top clip and a bottom clip. The body includes a through hole which defines through the top and the bottom of the body. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the body. A recess is defined in the inner periphery of the through hole and a protrusion with a receiving slot extends from one end of the recess. A resilient member is received in the receiving slot to bias the pawl in the recess to engage with the ratchet wheel. The ring is engaged with the top recessed area. The top clip is engaged with the top recessed area and clips the ratchet wheel. The bottom clip is engaged with the bottom recessed area and clips the ratchet wheel.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: January 28, 2020
    Inventors: Chun-Wei Yang, Zhe-Ping Zhang
  • Patent number: 10427922
    Abstract: A system for selectively disallowing unwinding of a storage library robotic mechanism cable assembly in a direction that would otherwise allow a platform of the robotic mechanism to move downwardly via the force of gravity while at the same time allowing for winding up of the cable assembly and the platform, such as during shipping, manual access, replacement of the robotic mechanism, and/or the like. The system may include a ratchet pawl for engaging between adjacent teeth of a drive assembly of the robotic mechanism and an actuator for selectively moving or allowing for movement of the ratchet pawl into and out of the engaged position. In one embodiment, the system may include an electric switch or the like to sense when the pawl is engaged with the drive assembly.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: October 1, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventor: Joseph Paul Manes
  • Patent number: 10232494
    Abstract: A ratchet wrench includes a body with a ratchet wheel, a pawl and a switch unit connected thereto. The pawl has a toothed portion on the front side thereof, and a concaved area in the rear side thereof. A first face and two second faces are defined in the concaved area. The first face is located between the two second faces. Each of two sidewalls of the concaved area has a third face. An engaging recess is defined between the second and third faces on the same side relative to the first face. The switch unit controls the pawl to move to engage the toothed portion of the pawl with the ratchet portion of the ratchet wheel so as to control the rotational operations of the ratchet wrench.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 19, 2019
    Inventor: Cheng-Pu Yang
  • Patent number: 9782873
    Abstract: A ratchet wrench includes a head with a driving member located in a first room thereof. A clip is engaged with a first groove in the first room and a second groove in the driving member to retain the driving member in the first room. A pawl is received in a second room defined in the inside of the first room and engaged with the driving member. The pawl has a lip on the rear side thereof. A switching device is located in a third room communicating with the second room and outside of the wrench. The lip is inserted in a slot in the switching device. The switching device has a board which is rested on the lip and pushes either one of the two inclined faces of the recess in the rear side of the pawl to change the ratcheting engagement between the pawl and the driving member.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: October 10, 2017
    Inventor: Yen-Ju Chi
  • Patent number: 9707668
    Abstract: A multi-mode one-way wrench includes a head, a toothed wheel, a leading pawl, at least one following pawl and a switch. The head includes cutouts in communication with a chamber. The toothed wheel rests in the chamber and includes teeth. The pawls are movably rest in the cutouts and adapted for alternate engagement with the toothed wheel. The following pawl includes a stem. The switch rests on the head and made with at least one arched groove for receiving and guiding the stem to move the following pawl between a first mode for engagement with the toothed wheel and a second mode kept from the toothed wheel. The cutouts are biased from one another by an angle of 360°×(M+1/L)÷N, wherein L is an integer for representing the number of the cutouts, M is any proper integer, and N is an integer for representing the number of the teeth.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: July 18, 2017
    Inventor: Yi-Min Wu
  • Patent number: 9545705
    Abstract: A reversible ratchet wrench includes a body rotatably receiving a driving member, slideably receiving a pawl, and pivotably receiving a switch button. A pressing member and an elastic element are received in a pressing member receptacle in the switch button. An end of the pressing member outside of the pressing member receptacle has a first spacing to a first side of the switch button. A protrusion is provided on the first side of the switch button and has a second spacing to the first side of the switch button. If the pawl slides in the compartment while the body rotates in a non-driving direction and if the pawl does not disengage from the driving member, the protrusion presses against the pawl to disengage the pawl from the driving member when the elastic element is compressed to an extent in which the first spacing is not larger than the second spacing.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: January 17, 2017
    Inventor: Bobby Hu
  • Patent number: 9527194
    Abstract: A polyaxial tool, including an elongate body defining a first end, a second and a longitudinal axis extending therebetween; the elongate body defining a cavity at the first end; a plurality of arcuate gear teeth circumferentially arranged in the cavity and movable with respect to the elongate body; a socket coupled to the housing and coaxial with the plurality of gear teeth; and a handle coupled to the second end, where an angular position of at least one of the elongate body and handle is adjustable with respect to the plurality of gear teeth.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: December 27, 2016
    Assignee: Symmetry Medical, Inc.
    Inventors: Guillaume Kerboul, James William Truscott, Jose Fernandez
  • Patent number: 9254557
    Abstract: A ratchet wrench includes a driving device having first and second sides spaced along a rotating axis. A compartment extends from the first side through the second side. A drive member is received in the compartment and includes an end for driving a tool. A ledge is formed on an inner periphery of an end of the compartment at the second side. A pressing rod extends into the drive member via the end of the compartment at the second side. The pressing rod is movable relative to the drive member along the rotating axis to control engagement with or detachment from the tool. A dustproof ring is mounted between the ledge and the pressing rod. The dustproof ring includes an outer side and an inner side. The outer side presses against an abutment portion of the ledge. The inner side presses against the pressing rod.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: February 9, 2016
    Inventor: Bobby Hu
  • Patent number: 9120211
    Abstract: A ratchet wrench includes a head. A gear wheel, a first pawl, and a second pawl are disposed in a chamber defined in the head. The gear wheel has an outer periphery thereof including a plurality of teeth extended circumferentially outwardly therefrom. The first and second pawls each include a lateral side thereof including third and fourth plurality of teeth respectively extended outwardly therefrom. The first and second pawls are disposed one above the other. The first and second pawls are respectively biased by first and second biasing mechanisms. The first and second pawls are alternatively engaged with the gear wheel when it is operably turned.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 1, 2015
    Assignee: New Way Tools Co., Ltd.
    Inventor: Ping-Wen Huang
  • 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
  • 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
  • Publication number: 20150101950
    Abstract: A ratcheting tool has a drive tang with a socket retaining detent and a linkage to engage the detent. A locking element is disposed movably between a first position wherein the locking element engages the linkage when a first actuator is in a first position so that the locking element blocks movement of the linkage so that the detent remains in a socket-retaining position and a second position in which the locking element disengages the linkage. A storage device for retaining sockets has a frame and one or more docks attached to the frame, each dock having a first retainer member, a second retainer member, and a third retainer member, at least one of which is selectively movable with respect to a socket receiving space so that a socket is removable from the socket receiving space.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 16, 2015
    Inventors: Jason M. Wirth, Timothy T. McKenzie, Mark J. Momola, Jonathan S. Beckwith, Alan D. Anderson
  • Patent number: 8973469
    Abstract: A ratchet wrench mainly includes a main body installed with a driving gear and a driven gear respectively having teeth formed spirally and engaged with each other. A confining chamber in the main body has an inner wall formed with ratchet teeth able to restrictively lock with ratchet teeth formed on the teeth of the driven gear. An interactive member is installed in an insert hole of the driven gear, with one end connected with the orientating member and another end positioned on the cover. A pressing piece is fixed on the interactive member, confined in the insert hole of the driven gear. A spring is located between the pressing piece and the driven gear. By switching the orientating member, the driving gear can easily change rotating direction, with a strong locking effect.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: March 10, 2015
    Inventor: Yueh-Ying Yang
  • Publication number: 20150053051
    Abstract: A ratcheting tool comprises a drive housing provided with a housing cover and an actuating lever. A drive is arranged in the drive housing, wherein the drive comprises a rotary part with toothing rotatably supported in the drive housing. A connector serves for receiving plug-on or plug-in tools. A locking pawl is pivotally arranged in the drive housing, wherein the locking pawl comprises a toothing which engages the toothing of the rotary part for transmitting torque in one direction of rotation. A switch sets the direction of rotation and the engagement of the toothing of the locking pawl into the toothing of the rotary part. A hinge connection connects the locking pawl to the switch, wherein the switch comprises a switching pin which is rotatably supported in the drive housing.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Inventors: Dieter Heidel, Hans-Joachim Mehlau, Joachim Wilhelm, Michael Backhaus
  • Patent number: 8960054
    Abstract: A selective one-way wrench includes a head, a rotor, a switch, a pawl and a torque spring. The head includes a first cavity defined therein, a second cavity in communication with the first cavity, and a third cavity in communication with the second cavity. The rotor is rotationally placed in the first cavity and formed with a gear. The switch includes a body pivotally inserted in the third cavity, a recess defined in the body, and a bore in communication with the recess. The pawl is movably placed in the second cavity and formed with a plurality of teeth engaged with the gear and a groove defined therein. The torque spring includes a helical portion placed in the recess, a first rectilinear end extending into the groove from the helical portion, and a second rectilinear end extending into the bore from the helical portion.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: February 24, 2015
    Assignee: Pard Hardware Industrial Co., Ltd.
    Inventor: Da-Sen Lin
  • Patent number: 8950295
    Abstract: An adjustable wrench device includes a housing engaged in a head and having an internal gear, a rotary member engaged in the housing, a sleeve attached to the housing and engaged with the rotary member for confining the rotary member in the housing, the sleeve includes an opening having two spirally arranged cam surfaces and having two or more pairs of depressions, two jaw members are engaged with the rotary member and moveable toward and away from each other to engage with either pair of depressions for adjusting the spacing distance between the jaw members and for adjustably gripping bolt heads or nuts or fittings of different sizes or dimensions or diameters.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 10, 2015
    Inventor: Wen Hung Chiang
  • 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: 8857296
    Abstract: In a ratchet wrench body and its manufacturing method, the body comprises a handle and a head, and the head has a through hole, a control compartment, and a slot chamber. The head has a first surface and a second surface, and at least one embedded hole formed between the slot chamber and the first and second surfaces, and each embedded hole is penetrated through one side but not penetrated through the other side, and each embedded hole is smaller than an elastic element and a propping element contained in the slot chamber, and the slot chamber is extended from each embedded hole inwardly towards the slot chamber and formed by the total volume occupied by adjacent intersected surfaces.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: October 14, 2014
    Inventor: Ping-Chung Huang
  • Patent number: 8844408
    Abstract: A pneumatic ratchet wrench having a pneumatically actuated reversing device includes two cylinders disposed downstream of two branch conduits, and two plungers, each slidable in the respective cylinder by a burst of pressurized air from the branch conduits to bring an actuator into engagement with a direction selector so as to turn the direction selector in a selected one of clockwise and counterclockwise directions for unidirectionally rotating a drive body. The operation of direction selection is easy and handy to conduct.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: September 30, 2014
    Assignee: Basso Industry Corp.
    Inventor: Chin-Chi Chen
  • Publication number: 20140260818
    Abstract: An adjustable wrench device includes a housing engaged in a head and having an internal gear, a rotary member engaged in the housing, a sleeve attached to the housing and engaged with the rotary member for confining the rotary member in the housing, the sleeve includes an opening having two spirally arranged cam surfaces and having two or more pairs of depressions, two jaw members are engaged with the rotary member and moveable toward and away from each other to engage with either pair of depressions for adjusting the spacing distance between the jaw members and for adjustably gripping bolt heads or nuts or fittings of different sizes or dimensions or diameters.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Wen Hung CHIANG
  • Patent number: 8833208
    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: July 1, 2013
    Date of Patent: September 16, 2014
    Assignee: Apex Brands, Inc.
    Inventors: Robert L. Arnold, Richard P. Folkenroth
  • Publication number: 20140208897
    Abstract: A ratchet wrench includes a body having a head portion, a handle portion extended from one end of the head portion, a first cavity and a second cavity mutually communicated in the head portion, a rotatable member rotatably accommodated in the first cavity having sloping teeth around the periphery thereof, a reversing member pivotally mounted in the second cavity defining opposing first and second bearing surfaces, a pawl set between the rotatable member and the reversing member having a shaft portion located between the first and second bearing surfaces and movable by the reversing member between first and second positions to force a toothed portion opposite with the shaft engaged with or disengaged from the sloping teeth, and a cover covering the cavities having a through hole for the passing of the rotatable member to rotate a wrench socket forward or backward.
    Type: Application
    Filed: January 29, 2013
    Publication date: July 31, 2014
    Applicant: JOHN METAL TOOLS INDUSTRIAL LTD.
    Inventor: Chien-Chuan Kao
  • 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: 8770066
    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: Grant
    Filed: December 1, 2011
    Date of Patent: July 8, 2014
    Inventor: Chih-Min Chang
  • Publication number: 20140157959
    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: Application
    Filed: July 29, 2013
    Publication date: June 12, 2014
    Inventor: Wen-Hung Yang
  • Patent number: 8739659
    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: Grant
    Filed: February 29, 2012
    Date of Patent: June 3, 2014
    Inventor: Yu-Tang Chen
  • Patent number: 8720309
    Abstract: A ratchet wrench having easily assembling structure includes a body, a D-head, a loose ratchet, a heart-shaped spring, a disc and a ring. The body has a head portion. The head portion has a through hole. A plurality of teeth is uniformly defined on the through hole. The D-head is rotatably disposed in the through hole and has a connecting member and a threaded member. The loose ratchet is disposed on the D-head. The heart-shaped spring has a closed tip. The disc is disposed on the head portion. A shouldered hole is opened on the disc. A ring is disposed onto the shouldered hole. The ring is disposed onto the shouldered hole. Under this arrangement, a user engages a tool bit with the connecting member of the present invention to lock a bolt by repeatedly rotating the body of the present invention clockwise/counterclockwise.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: May 13, 2014
    Inventor: Yi-Fu Chen
  • Patent number: 8661947
    Abstract: A three-mode direction-changeable ratchet wrench of the present invention includes a main body, a ratchet member, a ratchet mechanism, a switch mechanism having a toggle piece, and a restriction element. The main body includes a head portion and a handle, and the ratchet member is rotatably disposed to the head portion. The ratchet mechanism includes a first pawl, a second pawl, a first elastic element, and a second elastic element. The switch mechanism is disposed on the head portion. The restriction element is disposed on one of the main body and the switch mechanism and is movable between a restrict position and a release position. Thereby, the restriction element is able to alternatively restrict the toggle piece.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: March 4, 2014
    Inventor: Yu-Hua Ou
  • 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
  • Patent number: 8635932
    Abstract: An easy assembled ratchet wrench contains a body including a head portion disposed on at least one end thereof, the head portion including a first chamber and a second chamber, the first chamber including a recess; a ratchet member received in the first chamber and including plural first teeth and at least one tool end; an engaging member placed in the second chamber and including plural second teeth; a direction controlling member inserted into the engaging member to push the engaging member and including a contacting face; a fitting member fixed in the first chamber and including the guiding face so that the guiding face guides the direction controlling member to displace horizontally and including an indent fixed on an outer wall thereof; a C-shaped retainer retained in the indent of the fitting member and the recess of the body to position the fitting member.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: January 28, 2014
    Inventor: Shu-Ju Chen
  • Patent number: 8631723
    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: Grant
    Filed: December 1, 2011
    Date of Patent: January 21, 2014
    Inventor: Chih-Min Chang
  • 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: 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: 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: 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: 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