Single Pawl Patents (Class 81/63.2)
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Patent number: 12233514Abstract: An adjustable ratchet wrench is provided that includes a base plate and a top plate rotatably coupled to the base plate. A plurality of grippers may form an interior polygonal shape within a center of the base plate and the top plate for gripping a workpiece. A plurality of push rods coupled to the grippers may move the grippers to change the size of the interior polygonal shape as the top plate is rotated with respect to the base plate.Type: GrantFiled: July 22, 2022Date of Patent: February 25, 2025Inventor: Haisheng Liu
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Patent number: 11801526Abstract: A method of coating a fastener assembly that extends from a substrate comprises steps of at least partially saturating a permeable body with a volume of a liquid and covering the fastener assembly with the permeable body. The step of covering the fastener assembly with the permeable body comprises at least partially compressing the permeable body against the fastener assembly and transferring a portion of the volume of the liquid from the permeable body to an exposed outer surface of the fastener assembly and to a ring on the substrate, surrounding the fastener assembly.Type: GrantFiled: August 11, 2021Date of Patent: October 31, 2023Assignee: The Boeing CompanyInventors: Richard Lynn Hopkins, Lyman Scott Ducworth, Diana Dujunco Dan Larrabee, Janet Karen H. Jackson, Sandra Loraine Boyd, Elker I. Vasquez
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Patent number: 11325229Abstract: An assembly of a wrench and a socket. The wrench has a penetrating driving hole, which has a retaining ring mounted therein. The socket, having a front end and a tail end, comprises a socketing portion axially extended between the front end and the tail end thereof for driving a fastening element. The socket comprises a retaining portion formed on the periphery thereof. The retaining portion has a retaining groove arranged at retaining corners radially indented for matching the retaining ring. The retaining groove is positioned between the front end and the tail end. The retaining portion further has a buffer groove formed between the retaining groove and the front end, so as to allow the buffer groove to successively provide a buffer or damping effect with the retaining ring when the retaining groove is decoupled from the retaining ring. Accordingly, the user is allowed to control his/her force more easily and improves the operational safety for the process of pulling out of the socket.Type: GrantFiled: November 26, 2019Date of Patent: May 10, 2022Inventor: Kai Zhang
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Patent number: 11325226Abstract: A unidirectional ratchet wrench structure has a wrench member, a pawl and a ratchet. The wrench member has an accepting space for accommodating the ratchet and an accepting space for accommodating the pawl. A toothed section of the pawl has a plurality of equiangular teeth and an irregular tooth. Since the irregular tooth is lower than the height of the equiangular teeth, the irregular teeth irregular tooth is capable of quickly disengaging from the equiangular teeth of the ratchet. The arc section and the toothed section have different arc measures and not push against the outer periphery of the ratchet at the same time, through the abutment of the pivoting point and the change of the center of gravity of the pawl when the wrench is rotated, the pawl is capable of producing a seesaw yaw movement to achieves the effect of quick engagement and disengagement.Type: GrantFiled: July 19, 2020Date of Patent: May 10, 2022Assignee: ZHEJIANG MAXTOP TOOLS MANUFACTURE CO., LTDInventor: Neng-Chia Shih
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Patent number: 11253981Abstract: A ratchet wrench is provided, including a main body, a driving member, a restricting member, a switching member and an elastic abutting assembly. The main body has a first receiving, chamber, a second receiving chamber and a third receiving chamber which is communicated with the first receiving chamber and the second receiving chamber. One end of the second receiving chamber is formed with a larger diameter section, and the other end of the second receiving chamber is formed with a small diameter section. The driving member is rotatably assembled within the receiving chamber. The restricting member is disposed in the third receiving chamber and limitable to a rotational direction of the driving member. The switching member is rotatably disposed within the second receiving chamber and includes a rotatable member and a projection which extends from the rotatable member. The rotatable member is received in the larger diameter section and the projection is received in the small diameter section.Type: GrantFiled: May 26, 2017Date of Patent: February 22, 2022Assignee: STANLEY CHIRO INTERNATIONAL LTD.Inventor: Yi-Tung Chan
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Patent number: 11235447Abstract: A ratchet wrench may include a main body and a quick release member. The main body has a driving end, and a tool hole vertically penetrates therethrough. A housing concavely formed on an inner wall of the tool hole, and a teeth section is installed in the housing. A ratchet wheel is installed into the tool hole, and an outer periphery of the ratchet wheel is adapted to engage with the teeth section so as to enable the ratchet wheel and the tool hole to have synchronous rotation. A driving hole axially penetrates through the ratchet wheel. The quick release member has a magnetic ring, a pressing member, and a cover. The pressing member is adapted to move relative to the driving hole and the magnetic ring, such that a sleeve can be easily coupled in or detected from the driving hole so as to achieve the quick release effect.Type: GrantFiled: January 27, 2020Date of Patent: February 1, 2022Inventor: Neng-Chia Shih
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Patent number: 10744623Abstract: A ratchet wrench includes a handle and a head. A ratchet wheel is received in the through hole and a pawl located in a curved recess in the head is engaged with the ratchet wheel. A slot is defined through the top and bottom of the handle and a portion of the head. A control member is slidably engaged with the slot and controls the pawl. The control member includes a tongue which is engaged with a top groove of the ratchet wheel. When sliding the control member away from the ratchet wheel, the tongue is disengaged from the top groove and the pawl is shifted by the control member, so that the ratchet wheel is able to be picked out from the through hole.Type: GrantFiled: November 5, 2017Date of Patent: August 18, 2020Inventor: Cheng-Pu Yang
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Patent number: 10357872Abstract: An apparatus for use with a winding cone for a door assembly includes a housing having a first piece and a second piece, a fastener for connecting the first piece to the second pieces, a dowel extending from the housing to engage at least one hole in the winding cone, and holes on an outer surface to accept a winding bar.Type: GrantFiled: August 1, 2017Date of Patent: July 23, 2019Inventor: Jeffrey Gabelsberg
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Patent number: 10335929Abstract: A hand tool or wrench with a ratcheting mechanism. The wrench includes a number of components such as an abutting block and a pawl for use in a bistable ratchet operation. The wrench includes a ratchet mechanism that provides stable seating of the components, so that the mechanism is securely retained in a driving mode, as well as enabling a user to select a driving mechanism with ease so as to improve work efficiency.Type: GrantFiled: July 28, 2017Date of Patent: July 2, 2019Assignee: Stanley Chiro International Ltd.Inventors: Henry Chou, Yi Tung Chan
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Patent number: 9573253Abstract: A ratchet wrench structure includes a main body provided therein with a ratchet wheel, an actuating member and a restraining block positioned between the ratchet wheel and the actuating member. The restraining member has one side provided with two recessed portions, and the actuating member is provided with a position-limiting groove corresponding with the recessed portion, and an elastic member. When the actuating member is rotated, the elastic member will be actuated to push the recessed portion to have its front edge longitudinally and evenly pressing the recessed portion to enable the elastic member to support the restraining block in its entirety. Further, when the restraining block is stressed by rotation of the ratchet wheel, the restraining block can carry out reciprocating movement because of extension and contraction of the elastic member. Thus, the ratchet wrench structure can be simplified in number of components.Type: GrantFiled: December 9, 2015Date of Patent: February 21, 2017Inventor: Chia-Yu Chen
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Patent number: 9227307Abstract: A reversible ratchet wrench includes a wrench body, one end of which having a ratchet portion that has an activating opening and a circular hole, and an arc ratchet slot formed therebetween; a control unit having a circular plate portion, one end of which extending to form a handle unit, while the other end of which forming a block unit, and a U-shaped base formed at the top portion of the block unit and a spring is disposed at the U-shaped base; a ratchet unit, one end which having arc teeth, the other end of which having a protruding restricting portion, and a column protrudingly extending from one end of the restricting portion; and a rotating unit disposed at the activating opening of the wrench body, and a teeth ring formed at outer periphery of the rotating unit to engage with the arc teeth of the ratchet unit.Type: GrantFiled: March 18, 2013Date of Patent: January 5, 2016Inventor: Wei-Chu Chen
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Patent number: 9156144Abstract: A ratchet mechanism contains a chamber defined by at least one gear surface, a rotating member positioned at least partially within the chamber, a gear member positioned at least partially within the chamber, and a stop member engaging the rotating member, such that the rotating member and the stop member rotate in unison. A movable pin engages and rotatably connects the rotating member and the gear member, and the pin is movable to disengage the pin from the rotating member and permit the rotating member to be shifted between different drive configurations. The gear member has a plurality of gear teeth around its outer periphery. At least a portion of the gear teeth engage the gear surface. The gear member can rotate freely in one rotational direction, and the stop member abuts the gear member to prevent rotation of the gear member in an opposed rotational direction.Type: GrantFiled: March 14, 2013Date of Patent: October 13, 2015Inventor: Stephen A. Gummow
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Patent number: 9132532Abstract: 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: GrantFiled: September 15, 2014Date of Patent: September 15, 2015Assignee: Apex Brands, Inc.Inventors: Robert L. Arnold, Richard P. Folkenroth
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Patent number: 9114510Abstract: A pawl structure of ratchet wrenches has multiple engaging teeth, a first recess and a second recess. The engaging teeth include first teeth at the mediate portion and second teeth are respectively located at two ends of the engaging teeth. The tips of the first teeth are located on a first curve which has a center and a central line extends through the center and intersects the first curve. The tips of the second teeth are located on a second curve which gradually leaves from the center of the first curve along with the second curve extending away from the central line. The first recess is located corresponding to the central line and the first teeth. The second recess is located corresponding to the second teeth.Type: GrantFiled: June 18, 2013Date of Patent: August 25, 2015Inventors: Tsan-Chang Lee, Yueh-Li Wang
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Patent number: 9089953Abstract: 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: GrantFiled: August 21, 2014Date of Patent: July 28, 2015Assignee: Eduard Wille GmbH & Co. KGInventors: Dieter Heidel, Hans-Joachim Mehlau, Joachim Wilhelm, Michael Backhaus
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Publication number: 20150143962Abstract: 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: ApplicationFiled: September 15, 2014Publication date: May 28, 2015Inventors: Robert L. Arnold, Richard P. Folkenroth
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Publication number: 20150135909Abstract: A novel reversible ratchet wrench may include a wrench body, a control member, a ratchet member and a rotating member, wherein the control member has a restricting slot and two stopper planes, and a deep hole for placing the spring. The control member is placed into the round hole of the wrench body by the half cylindrical body and connects with the ratchet member which is placed into the arc-shaped ratchet slot, thereby resulting in a secure relative positioning between the control member and the ratchet member. The novel reversible ratchet wrench allows convenient switch between directions of the rotational movement of the wrench body and the structural design effectively prevents the spring from ejecting from the deep hole of the control member or getting stuck by restricting the movement space of the spring. Furthermore, this structural design improves the smoothness of switching operation of the ratchet wrench.Type: ApplicationFiled: November 15, 2013Publication date: May 21, 2015Inventor: Wei-Chu Chen
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Patent number: 9010220Abstract: A pass-thru ratchet wrench includes a wrench body. A front end of the wrench body has a head portion. A ratchet is provided in the head portion. The ratchet has a receiving hole to receive a socket. The ratchet has a first neck portion at an upper edge thereof and an annular groove around the outer wall of the first neck portion. The annular groove has a certain depth. The ratchet has a plurality of through holes in annular groove. A C-shaped buckle ring is disposed in the annular groove. The C-shaped buckle ring extends out of the through holes to form a limit portion. The limit portion is adapted to stop the socket, thereby the receiving hole of the ratchet can limit the socket from displacing.Type: GrantFiled: May 28, 2014Date of Patent: April 21, 2015Inventor: Chia-Yu Chen
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Patent number: 8960054Abstract: 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: GrantFiled: February 8, 2013Date of Patent: February 24, 2015Assignee: Pard Hardware Industrial Co., Ltd.Inventor: Da-Sen Lin
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Patent number: 8950294Abstract: A ratchet wrench applicable to multi-size workpieces comprises: a wrench with a handle and a head wherein the head has a hollow handle hole in which there are two neighboring surfaces along its inner edge, a first support surface and a second support surface, and an accommodating space embedded into the handle; a support portion with a ratchet part and a resilient member wherein the ratchet part allows one end to be pivoted in the accommodating space and is provided with an arc-convex portion, which is within the hollow handle hole for a first working space developed inside, and the resilient member always exerts a resilient resistance on the ratchet part. As such, the ratchet wrench depends on a simple mechanism and is applicable to continuous screw operation of various screw fastening elements for excellent convenience and swiftness.Type: GrantFiled: March 21, 2012Date of Patent: February 10, 2015Inventor: Yeo-Ming Wang
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Patent number: 8931375Abstract: A ratchet device includes a body, a ratchet wheel unit, and a switching unit. The body has an outer peripheral surface, at least one slide slot formed in the outer peripheral surface, at least one first groove, and at least one second groove. The ratchet wheel unit includes a ratchet wheel sleeved on the body, at least one first pawl member inserted into the first groove, at least one second pawl member inserted into the second groove, and resilient members biasing the first and second pawl members to engage the ratchet wheel. The switching unit is sleeved on the body, and includes a pushing member disposed in the slide slot, and a switching member connected to the pushing member. Through operation of the switching member, the first or second pawl member can be separated from the ratchet wheel.Type: GrantFiled: July 9, 2013Date of Patent: January 13, 2015Inventor: Chin-Tan Huang
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Patent number: 8931374Abstract: A socket wrench includes a handle including a pivotal head including a cylindrical, eccentric recess on a bottom, a cylindrical cavity in a blind end of the eccentric recess, a perimetric opening proximate to the eccentric recess, and a spring depressible detent; a socket drive including a lower projection, upper external ratchet teeth, an annular groove, and an intermediate flange; a hollow drive gear including a circular opening on a bottom, first, second and third posts, first, second and third positioning wells; first and second pawls; and a biasing member disposed and biased between the first pawl and the second pawl.Type: GrantFiled: June 3, 2013Date of Patent: January 13, 2015Inventor: Kuo Lung Chen
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Publication number: 20140366690Abstract: A pawl structure of ratchet wrenches has multiple engaging teeth, a first recess and a second recess. The engaging teeth include first teeth at the mediate portion and second teeth are respectively located at two ends of the engaging teeth. The tips of the first teeth are located on a first curve which has a center and a central line extends through the center and intersects the first curve. The tips of the second teeth are located on a second curve which gradually leaves from the center of the first curve along with the second curve extending away from the central line. The first recess is located corresponding to the central line and the first teeth. The second recess is located corresponding to the second teeth.Type: ApplicationFiled: June 18, 2013Publication date: December 18, 2014Inventors: Tsan-Chang Lee, Yueh-Li Wang
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Patent number: 8904906Abstract: A wrench for rotating a drive member such as a socket, the wrench having a housing including a head portion and a handle portion, the head portion having an inner peripheral wall defining an internal cavity; a set of drive teeth circumscribing the inner peripheral wall of the head portion of the housing and extending into the internal cavity; a drive gear disposed within the internal cavity of the head portion of the housing; a socket engaging drive member connected to the drive gear and extending outwardly from the head portion of the housing; a set of opposition gears disposed within the internal cavity of the head portion of the housing, the opposition gears being disposed between and interconnected with the drive gear and the drive teeth; and an operating assembly carried by the housing and operably associated with the drive gear, the operating assembly including a novel quick turn mechanism for controllably changing the operating mode of the wrench from a tightening mode to a loosening mode.Type: GrantFiled: July 12, 2011Date of Patent: December 9, 2014Inventors: Stephen Adams, Frank Baer
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Patent number: 8893590Abstract: 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: GrantFiled: March 9, 2013Date of Patent: November 25, 2014Assignee: Infar Industrial Co., Ltd.Inventor: Ander Chen
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Patent number: 8857296Abstract: 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: GrantFiled: March 31, 2011Date of Patent: October 14, 2014Inventor: Ping-Chung Huang
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Publication number: 20140290442Abstract: A ratchet handle includes a detent. A front part of the detent has a first meshing portion and a second meshing portion to mesh with a ratchet gear. An accommodation recess is provided between the first meshing portion and the second meshing portion. An auxiliary member is provided in the accommodation recess. The auxiliary member has a curved surface corresponding to an outer contour of the ratchet gear. The ratchet handle further includes an operating device. The operating device is operated to turn the detent so as to control the first meshing portion or the second meshing portion to mesh with the ratchet gear. The detent of the present invention is turned with less noise and moved stably.Type: ApplicationFiled: May 20, 2013Publication date: October 2, 2014Inventor: Shiyu Sun
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Publication number: 20140260820Abstract: A reversible ratchet wrench includes a wrench body, one end of which having a ratchet portion that has an activating opening and a circular hole, and an arc ratchet slot formed therebetween; a control unit having a circular plate portion, one end of which extending to form a handle unit, while the other end of which forming a block unit, and a U-shaped base formed at the top portion of the block unit and a spring is disposed at the U-shaped base; a ratchet unit, one end which having arc teeth, the other end of which having a protruding restricting portion, and a column protrudingly extending from one end of the restricting portion; and a rotating unit disposed at the activating opening of the wrench body, and a teeth ring formed at outer periphery of the rotating unit to engage with the arc teeth of the ratchet unit.Type: ApplicationFiled: March 18, 2013Publication date: September 18, 2014Inventor: Wei-Chu Chen
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Patent number: 8833208Abstract: 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: GrantFiled: July 1, 2013Date of Patent: September 16, 2014Assignee: Apex Brands, Inc.Inventors: Robert L. Arnold, Richard P. Folkenroth
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Publication number: 20140224080Abstract: 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: ApplicationFiled: February 8, 2013Publication date: August 14, 2014Applicant: PARD HARDWARE INDUSTRIAL CO., LTD.Inventor: Da-Sen LIN
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Patent number: 8800410Abstract: A ratchet wrench with a direction switching structure includes a wrench body with an axial slot, a control slot, and a pivot slot which are interconnected, and a ratchet wheel, a ratcheting member, and a switching member are installed therein, respectively. The switching member pushes against the ratcheting member through a prop member and selectively controls the engagement between the ratcheting member and the ratchet wheel. The circumferential wall of the pivot slot has a circular slot and a stepped surface formed at a position near an opening of the pivot slot provided for latching the switching member into the circular slot by a latch portion thereon and being stopped by the stepped surface for the positioning purpose. The prop member pushes against an appropriate position of the ratcheting member to prevent an unsecured engagement between the ratcheting member and the ratchet wheel.Type: GrantFiled: March 14, 2013Date of Patent: August 12, 2014Inventor: Ping-Chung Huang
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Patent number: 8776640Abstract: 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: GrantFiled: July 12, 2013Date of Patent: July 15, 2014Inventor: Bobby Hu
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Patent number: 8770066Abstract: 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: GrantFiled: December 1, 2011Date of Patent: July 8, 2014Inventor: Chih-Min Chang
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Patent number: 8763498Abstract: A ratchet wrench including a holding portion, a neck portion, a switching member, a controlling rod, a blocking member, and a ratchet driving head is disclosed. The neck portion which is located at the top end of the holding portion has a cavity. The cavity has a first recess and an opening. The first recess is used for receiving a compressible elastic member and a ball. The opening is used for receiving and tightly fitting with a bendable elastic member. The switching member has a second recess to hold the bottom of the bendable elastic member, and the switching member has two adjacent arc grooves at its bottom. The controlling rod links the switching member to shift the switching member in the cavity to allow the ball to be pressed into one of the arc grooves. The controlling rod can be applied to shift, rotate or both shift and rotate the switching member in the cavity.Type: GrantFiled: May 26, 2011Date of Patent: July 1, 2014Assignee: Kabo Tool CompanyInventor: Chih-Ching Hsieh
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Patent number: 8720309Abstract: 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: GrantFiled: August 7, 2012Date of Patent: May 13, 2014Inventor: Yi-Fu Chen
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Patent number: 8720308Abstract: A dual-pawl ratchet wrench mechanism is disclosed having a stop mechanism for limiting over-travel of a reversing lever for selecting drive directions. In one form, the wrench mechanism includes a ball and spring assembly that cooperate with recesses to define proper positions for the reversing lever, and one or more ramps are provided between the recesses to promote tactile feel and to promote the reversing lever being rotated to a proper position. In some forms, the stop mechanism is formed on a stationary portion, such as a spacer or the wrench body, and a portion of the reversing lever. The design simplifies manufacturing, such as by simplifying assembly and minimizing the need for securements. Additionally, the reversing lever is assembled with the mechanism in a manner to improve sealing.Type: GrantFiled: June 26, 2013Date of Patent: May 13, 2014Assignee: Snap-on IncorporatedInventors: Richard Hopper, Michael Foster, Christopher Thompson
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Publication number: 20140109730Abstract: An adjustable socket that includes a housing, a rotatable member engageable with the housing such that the rotation of the rotatable member causes the housing to move upwardly or downwardly along the longitudinal axis, an adjusting collar engageable with the rotatable member and the housing, a plurality of jaws, a retainer, and a lock member. Each jaw is received in a corresponding one of apertures of the housing. The lock member is operatively connected with the rotatable member and is constructed and arranged to secure the adjusting collar to the housing and the plurality of jaws. The jaws are movable towards and away from the longitudinal axis of the housing through a range of positions upon the rotation of the rotatable member.Type: ApplicationFiled: August 7, 2013Publication date: April 24, 2014Applicant: STANLEY BLACK & DECKER, INC.Inventors: Thomas Pelletier, Heather LI
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Publication number: 20140102260Abstract: A device that automatically actuates the reversing lever of a ratchet mechanism when the radial direction of the motor is changed. The auto-shift mechanism includes a worm gear that rotates with the motor, and a disc coupled to the worm gear that moves laterally as the worm gear rotates. Axial movement of the disc actuates a reversing lever of a ratchet mechanism by either pulling or pushing the reversing lever. A lost-motion mechanism can absorb an initial amount of torque so that the auto-shift mechanism can run its course prior to applying the torque to a fastener.Type: ApplicationFiled: October 17, 2012Publication date: April 17, 2014Applicant: SNAP-ON INCORPORATEDInventor: Daniel Pusateri
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Patent number: 8671806Abstract: This invention is a new beginning for AN wrench users. No more uncomfortably thin AN or Bonney wrenches are needed. This wrench/tool system with separate, ergonomic handle is loaded with features designed for comfort. The separate handle is specifically designed with contoured finger grips, and gently radiused back edge resting against the palm of the user's hand. These are features that will provide the user all-day comfort. In addition, with the common blade of the wrench/tool ends, fitting the matching receiving groove of the handles, wrench/tool ends and handles of differing styles can be added, and upgraded to build a set of wrench/tool ends and handles to meet every need.Type: GrantFiled: April 17, 2012Date of Patent: March 18, 2014Inventor: Peter Dorn Lindblom
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Publication number: 20140060259Abstract: 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: ApplicationFiled: December 12, 2012Publication date: March 6, 2014Inventor: Bobby Hu
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Patent number: 8661945Abstract: A clamping ratcheting wrench is disclosed that is capable of being opened and closed without slipping the wrench over the end of a nut to be tightened or loosened. This wrench overcomes many problems because it may be used on a nut that is in a very tight position where a traditional wrench would not fit, nor would a conventional wrench be capable of ratcheting. The ratchet is effected by individual ratchet segments that are held in place when the wrench is opened. One of the true advantages of the various aspects is that the ratchet can be opened and closed once the ratchet segments are aligned, such that the segments are secured in place to allow the wrench to be opened up without having all the segments fall out of the wrench. A first aspect of the invention discloses an interlocking ratchet piece design, while a second aspect of the invention discloses another ratchet piece design with structural channeling to secure the ratchet segments in alignment so that the segments do not come out of the wrench.Type: GrantFiled: May 24, 2011Date of Patent: March 4, 2014Inventor: Ali W ElDessouky
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Patent number: 8650991Abstract: 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: GrantFiled: April 29, 2011Date of Patent: February 18, 2014Inventor: Yi-Hung Lin
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Patent number: 8635932Abstract: 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: GrantFiled: January 5, 2011Date of Patent: January 28, 2014Inventor: Shu-Ju Chen
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Publication number: 20140020519Abstract: A ratchet wrench includes a wrench body and a ratchet rotatably mounted in a ratchet hole of the wrench body and provided with one end protruding out of the ratchet hole for connection of a driving wheel. Thus, a user can rotate the driving wheel to force the rotation of the ratchet, such that a screw nut accommodated in the ratchet can be secured or loosened quickly and conveniently.Type: ApplicationFiled: March 14, 2013Publication date: January 23, 2014Inventor: Chih-Min CHANG
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Patent number: 8631723Abstract: 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: GrantFiled: December 1, 2011Date of Patent: January 21, 2014Inventor: Chih-Min Chang
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Publication number: 20140013904Abstract: A ratcheting palm graspable multi-socket wrench. The wrench includes a socket body portion and a ratcheting mechanism. The socket body portion has socket portions with socket openings, arranged around a perimeter of the socket body portion. A through hole passes through from the top surface to the bottom surface of the socket body portion. The ratcheting mechanism fits into the through hole of the socket body portion. The ratchet mechanism has an elongate shaft with a ratchet switch located at a first end, and a square socket adaptor located at an opposite, second end. The ratchet switch and adaptor are both accessible from outside of the socket body portion. The ratchet switch will selective allow either clockwise or counter-clockwise twisting of the socket body portion to drive the adaptor either clockwise or counter-clockwise, with the other direction being freewheeling, thereby providing a switching ratcheting function.Type: ApplicationFiled: July 9, 2013Publication date: January 16, 2014Inventor: David Meholovitch
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Patent number: 8616095Abstract: 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: GrantFiled: October 30, 2009Date of Patent: December 31, 2013Inventor: Yuan-Chin Chi
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Publication number: 20130291689Abstract: 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: ApplicationFiled: July 1, 2013Publication date: November 7, 2013Inventors: Robert L. Arnold, Richard P. Folkenroth
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Publication number: 20130283983Abstract: A ratchet wrench is configured as a double-ended and reversible bolt-through wrench configured to actuate four different fastener sizes. The wrench can include socket hubs that can be provided in high-visibility colors to provide easy identification by the user. The socket hubs can include extension portions which extend beyond the respective faces of the handle to provide adequate contact between the socket hubs and a target fastener. Each socket hub includes a corresponding rotational direction controller or shifter that allows the socket hub to reverse it direction of rotational actuation relative to a fastener.Type: ApplicationFiled: April 2, 2013Publication date: October 31, 2013Inventors: David S. Cummings, Derek Silsby, Paul Carnes
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Patent number: 8567287Abstract: 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: GrantFiled: November 18, 2011Date of Patent: October 29, 2013Inventors: Steve Gapp, Clint Johnson, Reed Felton