Single Patents (Class 81/63)
  • Patent number: 6305248
    Abstract: A ratcheting driver has a shaft rotatable relative to a handle, and a ratchet mechanism between the handle and the shaft. The ratchet mechanism has a body fixed to the handle. A spur gear coaxial with the shaft is mounted in the body so as to be rotatable about a common rotation axis of the shaft and the spur gear. First and second pawls are mounted on the body so as to be tiltable about axes parallel to the rotation axis and on opposite sides of an imaginary plane containing the rotation axis. Each pawl has a free end between its tilting axis and the said plane, and is tiltable between an engaging position, in which its free end intersects the tip cylinder of the spur gear and can abut against the flank of a gear tooth to prevent rotation of the gear in one direction relative to the body, and a non-engaging position, in which its free end lies outside the tip cylinder.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: October 23, 2001
    Assignee: The Stanley Works Limited
    Inventor: Stephen Rowlay
  • Patent number: 6305249
    Abstract: A adjustable wrench comprised of a body, a pressing piece, a sliding block and a micro-adjustment applicable to bolts of various sizes since the sliding block for adjusting the spacing between the micro-adjustment and a first and a second planes respectively can be automatically restored to its original location by means of the bouncing force provided by a first flexible element, and such spacing can be inched by rotating the micro-adjustment.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: October 23, 2001
    Inventor: Kuang Pin Wang
  • Patent number: 6301999
    Abstract: A ratchet wrench comprises a wrench body having a handle portion and a pawl engaging surface. A ratchet gear is removably engaged with a fastener such that torque applied to the gear is transmitted to the fastener to effect rotation. The gear is mounted to the body such that the gear and the body are rotatable relative to one another about a gear axis. The gear has a plurality of gear teeth having opposing tooth surfaces. A pawl has first and second tooth engaging surfaces and a load receiving surface. The pawl is mounted to the body for pivotal movement about a pawl axis with the load receiving surface engaging the pawl engaging surface. The pawl is movable to a gear driving position wherein the first and second tooth engaging surfaces are positioned for driving engagement with respective tooth surfaces of a pair of the gear teeth.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: October 16, 2001
    Assignee: The Stanley Works
    Inventor: Ajay Garg
  • Patent number: 6295896
    Abstract: A socket wrench includes a head with two engaging rods respectively extending from two sides of the head. Each engaging rod has a disk connected thereto and a spring is connected between the two disks. A release pin extends through the two engaging rods and has two notches for respectively receiving two balls embedded in the two engaging rods. A pawl member is pivotally received in the head and engaged with either one of the two disks. The two engaging rods are connected to two sockets with different sizes.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: October 2, 2001
    Inventor: Liao I-He
  • Patent number: 6289771
    Abstract: A double-reversible ratchet wrench includes a wrench body defining a box, a ratchet wheel mounted in the box of the wrench body and adapted for turning a bolt or nut with the wrench body, a stop member mounted in the box end of the wrench body and shifted between two positions to control the direction of rotation of the ratchet wheel relative to the wrench body, the stop member having a smoothly arched, outwardly curved, toothed engagement face forced into engagement with the ratchet wheel to limit the direction of rotation of the ratchet wheel in the wrench body, a backward finger strip extended out of the box of the wrench body and adapted for operation by hand to turn the stop member in the box and to shift the engagement between one of two halves of the engagement face of the stop member with the ratchet wheel in controlling the steering direction of the ratchet wheel.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: September 18, 2001
    Inventor: Chih-Ching Hsieh
  • Patent number: 6282992
    Abstract: A reversible ratchet-type wrench includes a handle and a head extended from the handle and having a hole. A web is defined between the handle and the head, and a cavity is defined in the web and communicated with the hole. The web further includes a compartment having a first end communicated with the cavity and a second end communicated with outside, thereby leaving a bridge in the web. A drive member is rotatably mounted in the hole of the head. A pawl is mounted in the cavity and includes a first side with ratchet teeth for releasably engaging with teeth on an outer periphery of the drive member. A switch member includes a turn-piece for manual operation and an actuating plate extended from the turn-piece and rotatably received in the second end of the compartment of the head. The switch member is switchable between two positions for changing ratcheting direction of the drive member.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: September 4, 2001
    Inventor: Bobby Hu
  • Patent number: 6282993
    Abstract: A ratchet tool a shank and a head which has a hole and a recess is defined in an inside of the hole. Two identical plates are respectively connected to two sides of the head and each plate has a ring portion engaged with the hole. A ring member with a toothed outer periphery is received in the hole of the head and retained by the two ring portions. A tongue portion extends from each the ring portion and is engaged with the recess. A slot and an aperture are respectively defined through the tongue portion. The ring member has a polygonal inside to be engaged with an object. A pawl member is received in the recess and has a curved toothed surface which is engaged with the ring member. A protrusion extends from a top of the pawl member and is movably received in the slot. A pushing member is movably engaged with a second end of the pawl member and an elongated hole is defined in the pushing member. A pin extends through the two apertures in the two plates and the elongated hole.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: September 4, 2001
    Inventors: Msrk A. Forman, Learng See-Bang
  • Patent number: 6282991
    Abstract: A reversible ratchet-type wrench includes a handle and a head extended from the handle and having a hole. A web is defined between the handle and the head and includes a first cavity communicated with the hole. The web further includes a compartment communicated with the first cavity and a second cavity that is communicated with the compartment. A drive member is rotatably mounted in the hole of the head. A pawl is mounted in the cavity and includes a first side with ratchet teeth for releasably engaging with teeth on an outer periphery of the drive member. A switch member is rotatably received in the compartment of the web and switchable between two ratcheting positions for changing ratcheting direction of the drive member. A pin or coil spring is mounted between the switch member and the pawl for urging the ratchet teeth of the pawl to engage with the teeth of the drive member.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: September 4, 2001
    Inventor: Bobby Hu
  • Patent number: 6263768
    Abstract: A ratchet tool includes a toothed inner periphery defined in the ring-shaped head and a rotatable member is engaged with the toothed inner periphery. A recess is defined in a surface of the head and a driving member is rotatably received in the recess. A notch is defined in a side defining the recess and communicates between the recess and a central hole in the head. An elongated protrusion extends from the rotatable member and a disk is securely mounted to the protrusion. The driving member is rotatably engaged with the disk so that when rotating the driving member, the rotatable member is able to be rotated at a small angle.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: July 24, 2001
    Inventors: Jung-Sheng Huang, Yi-Ming Tung, Shiu-Mei Cheng
  • Patent number: 6260450
    Abstract: A wrench socket device for fitting the contours of the nut handles of the pipe clamps. The wrench socket device includes a gripping member having a hollow interior, a tubular upper portion and an enlarged lower portion which has an ovoid breadth which includes a pair of opposed end walls which are parallel to one another and a pair of opposed curved side walls which are curved toward one another, the gripping member further having an open bottom which has an ovoid shape which includes a pair of opposed end edges which are parallel to one another and a pair of opposed curved side edges which are curved toward one another, and further includes a wrench member having a handle member and a shaft extending therefrom and being attachable to the tubular upper portion of the gripping member. The wrench member may also include a ratchet mechanism which includes a tooth wheel and a pawl disposed in an end of the handle member.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: July 17, 2001
    Inventors: Billy L. Ragsdale, Jr., Angela M. Ragsdale
  • Patent number: 6260448
    Abstract: A ratchet wrench having the opening in the head formed from the top with the pawl being disposed adjacent to the gear within the opening. A retaining plate is disposed over the gear and pawl in the opening in the head. An aperture is formed in the cover plate aligned with a recess in the top of the pawl. A reversing lever with an offset tang is received in the aperture and engages the recess in the pawl. Alternate embodiments of the engagement of reversing lever with the pawl are disclosed. A quick release for sockets attached to the wrench is disclosed.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: July 17, 2001
    Assignee: Hand Tool Design Corporation
    Inventor: Peter Constantine Chaconas
  • Patent number: 6260449
    Abstract: A ratchet tool includes a head and a toothed member is rotatably received in an interior of the head. An output shaft extends from the toothed member. A frame having two plates is pivotably received in the interior of the head and one of the two plates has a slot defined therethrough. A pawl member received in between the two plates of the frame and a toothed curve surface is defined in a first end of the pawl member so as to engage with the toothed member, and a rib extends from a second end of the pawl member. A spring and a ball are received in the frame and the ball is urged against the second end of the pawl member. A boss extends from the pawl member and is movably received in the slot so as to allow the pawl member to disengage from the toothed member when the output shaft is remained still while the tool is rotated.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: July 17, 2001
    Inventor: Liao I-He
  • Patent number: 6260447
    Abstract: An elongated hollow handle forms a circular thru opening at one end. An annular ratchet gear is rotatably mounted within the handle and exposed in this opening and is adapted to carry a tool such as a die nut releasably secured within the gear and exposed thru opening. A double acting swivel pawl is centrally pivoted within the hollow handle and has two spaced pawl projections equally spaced from the pivot axis of the swivel pawl. A. transversely movable slider has opposite push buttons alternately protruding from the sides of the hollow handle; this slider has a spring bias plunger adapted to engage alternately opposite notches made in the rocker member on each side of its pivot axis. Therefore, a simple push on the protruding push button will change the direction in which the gear is rotated when swinging the handle back and forth. The gear has knurled exposed surfaces to enable manual grasping of the gear to brake its rotation during ratcheting.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: July 17, 2001
    Inventor: Heinz Hutt
  • Patent number: 6257097
    Abstract: A ratchet tool includes a head in which a disk is engaged and the disk has an engaging member extending from an end of the head. A flange extends from the disk and the flange has toothed inner periphery. A toothed rotator is engaged with the toothed inner periphery of the disk and located eccentrically to the a center of the disk. A ratchet device is received in a recess in an inner periphery of the head and includes a pawl member which is engaged with the toothed rotator. A number of the teeth of the toothed inner periphery of the disk is multiple times of the teeth of the rotator. The pawl member is rotated multiple revolutions while the disk is rotated one revolution. By this way, the ratchet tool is operated with less force.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: July 10, 2001
    Inventor: Liao I-He
  • Patent number: 6253647
    Abstract: A ratchet wrench is provided which includes a handle having an exterior surface, a head coupled to the handle, a rotatable gear disposed in the head and having ratchet teeth, and a rotatable pawl moveable between a first pawl position in which the pawl is engaged with the gear to allow rotation of the gear in a first direction and substantially prevent rotation of the gear in a second direction and a second pawl position in which the pawl is engaged with the gear to allow rotation of the gear in the second direction and substantially prevent rotation of the gear in the first direction. The wrench includes an elongated rotatable rod disposed in the handle having an actuator disposed at a first end of the rod and inclined with respect to the axis of the rod, the rod being rotatable from a first rod position wherein the actuator biases the pawl to the first pawl position and to a second rod position wherein the actuator biases the pawl to the second pawl position.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: July 3, 2001
    Assignee: Snap-on Technologies, Inc.
    Inventors: Daniel M. Eggert, Dean J. Iwinski
  • Patent number: 6250183
    Abstract: A ratchet tool includes a cartridge having one end engaged in a handle and having an orifice for rotatably receiving a gear of a sleeve. One or more tool members may be engaged in the sleeve for driving various kinds of fasteners. A ratchet device is engaged in the cartridge for controlling the driving direction of the sleeve relative to the cartridge. A pair of pawls are slidably received in a pair of channels of the cartridge and are biased to engage with the gear. The gear may be selectively disengaged from the gear to control the driving direction of the sleeve.
    Type: Grant
    Filed: January 15, 2000
    Date of Patent: June 26, 2001
    Inventor: Shu Chi Chiang
  • Patent number: 6230591
    Abstract: A ratcheting tool includes a handle and a head in which a gear wheel is rotatably mounted. A pawl is mounted in the head and includes a toothed first side engaged with the gear wheel and a second side facing away from the gear wheel, with the second side of the pawl including two spaced operative sections. A ball is biased to engage with one of the operative sections of the pawl, thereby biasing the pawl teeth to mesh with the gear wheel teeth and biasing the pawl to bear against a wall of the head. A switch member is pivotally mounted to the head and includes a first end engaged with the pawl to move therewith and a second end for manual operation. The switch member is pivotally movable between two positions to optionally cause the ball to engage with one of the operative sections of the pawl, thereby allowing change in ratcheting direction of the ratcheting tool.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: May 15, 2001
    Assignee: Hand Tool Design Corporation
    Inventors: David Ling, Hsien-Chung Tuan-Mu
  • Patent number: 6227077
    Abstract: A ratchet tool includes a cartridge secured to a handle and having an orifice for rotatably receiving a gear of a driving stem. The cartridge includes two apertures for slidably receiving two pins. The pins each includes one or more teeth formed in one or both ends and selectively biased to engage with the gear of the driving stem and to control the driving direction of the driving stem. A control ferrule is rotatably engaged on the cartridge and includes an actuator to selectively disengage the teeth of the pins from the gear of the driving stem.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: May 8, 2001
    Inventor: Shu Chi Chiang
  • Patent number: 6220123
    Abstract: The present invention relates to the structure of a ratchet wrench, and in particular, to a ratchet wrench which can provides high torque engagement in application, wherein a ratchet wheel is inserted into a circular opening on the wrench head of a common ratchet wrench, and a cavity is provided to the circular opening adjacent to one side of the rod body of the wrench for mounting a restrictive teeth structure, the end terminal of the cavity is provided with a ball hole to contain a spring and a steel ball, and the restrictive teeth structure is urged by the steel ball, thereby the high torque movement of the ratchet wheel is controlled.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: April 24, 2001
    Inventor: Yu-Tang Chen
  • Patent number: 6205890
    Abstract: A ratchet wrench including a handle, a drive stud, and a ratchet mechanism further includes a tool release mechanism. The tool release mechanism includes a tool release actuator which forms a recess. A reversing lever is coupled to the ratchet mechanism and is movable to forward, non-ratcheting and reverse positions to select a forward ratchet direction, a non-ratcheting action, and a reverse ratchet direction, respectively, for the ratchet mechanism. The direction control element carries a protruding element that is shaped to fit into a recess in the tool release actuator when the direction control element is in the forward position, to remain outside the recess when the direction control element is in the non-ratcheting position, and to fit into the recess when the direction control element is in the reverse position. The protruding element impedes inadvertent operation of the tool release mechanism when the direction control mechanism is in either the forward or the reverse positions.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: March 27, 2001
    Assignee: Joda Enterprises, Inc
    Inventors: Peter M. Roberts, John B. Davidson
  • Patent number: 6182536
    Abstract: A hand tool includes a shaft and a rotatable handle that is coupled to the shaft bar by a ratchet mechanism. The disclosed ratchet mechanism provides a clockwise ratcheting action, a counterclockwise ratcheting action, and a freewheeling action, as selected by a ratchet control ring. The shaft bar includes a quick release mechanism using a symmetrical ring that facilitates assembly.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: February 6, 2001
    Assignee: JODA Enterprises, Inc.
    Inventors: Peter M. Roberts, John B. Davidson
  • Patent number: 6164167
    Abstract: A ratchet wrench is provided having an arcuate toothed pawl meshing with the ratchet gear of a socket driving member. A gear section engages the back side of the pawl to control the rotation direction of the socket driving member. By the ratchet gear forcing the arcuate toothed pawl against the circular recess, a great torsion force can be transferred to the socket driving member.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: December 26, 2000
    Inventor: Yu-Tang Chen
  • Patent number: 6161454
    Abstract: A ratchet wrench having three interconnected openings formed therein. A ratchet gear is disposed in the first opening which has an access opening to the bottom surface of the wrench. A pawl is pivotally disposed in the second opening. A lever member is pivotally disposed in the third opening. A detent mechanism is carried by the lever member to engage the pawl. A lever arm is connected to the lever member and movement of the lever arm moves the lever member and detent mechanism for forward and reverse ratcheting. A method of assembly of the wrench is disclosed.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: December 19, 2000
    Assignee: Hand Tool Design Corporation
    Inventor: Peter Constantine Chaconas
  • Patent number: 6145412
    Abstract: A ratchet tool includes a head and a shank extending from the head in which a ratchet and a pawl are received in the head. A rod is rotatably inserted in the the shank and a grip is connected to the distal end of the shank. The grip is detachably connected to the first end of the rod, and an actuating member is connected to the second end of the rod. The actuating member is engaged with the ratchet which is rotated by the actuating member by rotating the grip. Therefore, the ratchet together with a bit or a socket connected to the ratchet are rotated simply by rotating the grip.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: November 14, 2000
    Inventors: Shiu-Mei Cheng, Jung-Sheng Huang, Yi-Ming Tung
  • Patent number: 6138532
    Abstract: A wrench includes a handle having a head and a gear disposed in the head. A pawl is pivotally secured in the handle and has two ends selectively actuated to act onto the gear. A knob has a spring-biased projection for selectively actuating either of the ends of the pawl to engage with the gear. An indicator device may be used for indicating the active direction of the wrench by indicating the position of the knob. The pawl may be disposed outside of the gear or may be disposed in a cartridge that is rotatably received in an internal gear.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: October 31, 2000
    Inventor: Frank McCann
  • Patent number: 6134991
    Abstract: A pawl for use in a ratchet wrench having a ratchet gear in an opening and the pawl in a communicating pawl opening. A detent ball and spring are in a bore in the wrench communicating with the pawl opening. A relief surface is formed on each side surface of the pawl extending from the front surface of the pawl toward the back surface. The front surface of the pawl has an intermediate surface having opposite ends forming teeth. A tooth is formed on the approximate mid-point of the intermediate portion. The back face of the pawl has two pockets separated by a center ridge. Each pocket has a ramp near the center ridge, each ramp joins a concave portion. A furrow is formed in at least one pocket extending from the bottom surface of the pawl to a point opposite the bore for the detent spring such that the detent ball may be introduced into the furrow and directed into the bore. A spacing hub is formed on the pawl to minimize friction between the pawl and the cover plate.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: October 24, 2000
    Assignee: Hand Tool Design Corporation
    Inventor: Peter Constantine Chaconas
  • Patent number: 6125722
    Abstract: A reversible ratchet wrench has a ratchet body with a cavity receiving the ratchet assembly. A pawl-engaging reversing lever is insertable through an opening in the ratchet body from the cavity and has a flange dimensioned to be trapped between the body and the pawl. A seal between the reversing lever and the ratchet body is provided by an O-ring seated in a groove in the outer surface of the reversing lever hub. A cover plate closes the cavity and cooperates with the pawl and the flange to retain the reversing lever in place.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: October 3, 2000
    Assignee: Snap-on Tools Company
    Inventors: Richard L. Hopper, Jr., William A. Nurmi, Charles H. Heiligenthal, Kenneth E. Kessler
  • Patent number: 6109141
    Abstract: A biasing structure for maintaining a pawl in engagement with a toothed gear of a ratchet wrench is provided. The structure includes an elongated plunger having an axis, a pawl engagement end, a spring insertion portion having a free end, a central portion connecting the engagement end to the spring insertion portion, and an annular first shoulder having a shoulder diameter formed between the spring insertion portion and the central portion. The spring insertion portion is tapered from a maximum diameter at the first shoulder to a minimum diameter at the free end. The structure also includes a compression spring coupled to the plunger assembly and having a plurality of coils, wherein at least one of the coils has a diameter less than the shoulder diameter and is disposed about the central portion. A reversible ratchet wrench having a pawl and using the biasing structure is also provided.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: August 29, 2000
    Assignee: Snap-on Tools Company
    Inventor: William A. Nurmi
  • Patent number: 6109140
    Abstract: A ratchet wrench including a handle, a drive stud and a ratchet mechanism further includes a tool release mechanism. The tool release mechanism includes a control rod that slides along the centerline of the drive stud and a ramp that is slidable in a plane transverse to the drive stud axis. The illustrated actuator is confined to the region of the ratchet wheel, and does not move between the pawl of the ratchet mechanism and the head of the wrench. Centering elements extend from the head of the wrench into an annular recess on a face of the ratchet wheel opposed to the drive stud. The actuator moves in a gap formed between opposed portions of the centering element.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: August 29, 2000
    Assignee: Joda Enterprises, Inc.
    Inventors: Peter M. Roberts, John B. Davidson
  • Patent number: 6101902
    Abstract: A ratchet wrench including two clamping panels, a base seat, a rotary member, an engaging member, a pressing member and a resilient member. The two clamping panels are respectively formed with two circular holes opposite to each other. The rotary member is rotatably disposed in the circular holes. A middle portion of an outer periphery of rotary member is formed with multiple teeth. Two end portions of the outer periphery are two fitting sections for fitting into the holes of the two clamping panels. One of the fitting sections is formed with a through hole in which the pressing member and the resilient member are disposed. The inner wall face of the circular hole of the clamping panel serves to stop the pressing member and the resilient member from dropping out. Therefore, the pressing member can be pressed against a nut or a socket to facilitate operation. Also, the structure is simple, easy to be assembled and firmly engaged.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: August 15, 2000
    Inventor: Hung Yin Wei
  • Patent number: 6098500
    Abstract: A hand tool includes a shaft and a rotatable handle that is coupled to the shaft bar by a ratchet mechanism. The disclosed ratchet mechanism provides a clockwise ratcheting action, a counterclockwise ratcheting action, and a freewheeling action, as selected by a ratchet control ring. The shaft bar includes a quick release mechanism using a symmetrical ring that facilitates assembly.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: August 8, 2000
    Assignee: JODA Enterprises, Inc.
    Inventors: Peter M. Roberts, John B. Davidson
  • Patent number: 6076433
    Abstract: A ratchet wrench includes a handle, a housing attached to said handle, a ratchet gear mounted for rotation in said housing, the ratchet gear having an axis of rotation extending through the housing, and means connected to the ratchet gear for turning a threaded fastener. A pawl is mounted on the handle about a pivot axis that extends through the handle, the pawl pivoting among a first position in which the pawl permits unrestricted rotation of the ratchet gear, a second position in which the pawl engages the ratchet gear to prevent rotation of the ratchet gear in one direction, but allows rotation of the ratchet gear in the opposite direction, and a third position in which the pawl engages the ratchet gear to prevent rotation of the ratchet gear in the opposite direction, but allows rotation of the ratchet gear in the one direction. A method for turning a threaded fastener is also included.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: June 20, 2000
    Inventor: Joseph A. Lynch
  • Patent number: 6070503
    Abstract: A ratcheting handle includes an elongated body having an end portion formed with an inner annular wall that extends in an axial direction to define an axial hole. A ratcheting mechanism is disposed in the axial hole, and includes a gear member that is disposed to be coaxial and rotatable in the axial hole and that has a coupling end engaging a shank of the associated driver bit, and a rim portion disposed around the axial direction. The rim portion is provided with a tooth member that is spaced apart from the annular wall in a radial direction to define an annular chamber therebetween.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: June 6, 2000
    Inventor: Hsuan-Sen Shiao
  • Patent number: 6070502
    Abstract: A ratchet box wrench includes a frame having two chambers at two ends, a packing member fitted in an intermediate portion of a frame and having two recesses at two ends, a first lug mounted in one of said chambers and provided with a pin at a top thereof, a second lug mounted in another one of said chambers and provided with a pin at a bottom thereof, a pair of outer plates fastened on two sides of said packing member, a pair of switching members each having an elongated portion at an end at an end having a longitudinal open slit at an intermediate portion, two ratchet box installed in said two chambers, a pair of pawls each rotatably mounted on one of said outer plates and disposed in one of said chambers, and a pair of springs each having a circular loop adapted to engage with said pin of one of said first and second lugs, a side loop engaged with a hook of said switching member, and a leg fitted in said cavity of one of said pawls, and two buttons each engaged with said raised portion of a respective one o
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: June 6, 2000
    Inventor: Jui-Ling Chang
  • Patent number: 6067882
    Abstract: An improvement in a ratcheting driver of the type having a handle, a driver head connected to the handle, a driver stem, ratchet means contained in the head and including ratcheting direction selector means disposed on the head in axial alignment with and remote from the driver stem and operable to lock the driver stem against rotation in a direction which is preselected by the user by the limited rotation of the ratcheting direction selector means in a predetermined direction, consisting of a ratcheting direction control wheel disposed on the head in axial alignment with and remote from the driver stem and fixed to the ratchet means, and a control wheel cover disposed over the control wheel so as to be separated from the head thereby and locked to the head.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: May 30, 2000
    Assignee: Alltrade Inc.
    Inventor: George Hillinger
  • Patent number: 6065374
    Abstract: A wrench having a floating pawl in a non-circular opening in the head of the wrench. The pawl has alternate positions for forward and reverse movement of the wrench. A reversing lever selectively moves an actuator to alternately engage one or the other leg of a spring within the wrench. Movement of the selected leg resiliently engages the pawl to move the pawl into the forward or reverse position. The pawl translates and rocks within the pawl opening when the wrench is ratcheted to minimize back swing arc.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: May 23, 2000
    Assignee: Hand Tool Design Corporation
    Inventor: Kenneth Taggart
  • Patent number: 6044730
    Abstract: A ratchet wrench including a handle, a drive stud, and a ratchet mechanism further includes a tool release mechanism. The tool release mechanism includes a tool release actuator which forms a recess. A reversing lever is coupled to the ratchet mechanism and is movable to forward, non-ratcheting and reverse positions to select a forward ratchet direction, a non-ratcheting action, and a reverse ratchet direction, respectively, for the ratchet mechanism. The direction control element carries a protruding element that is shaped to fit into a recess in the tool release actuator when the direction control element is in the forward position, to remain outside the recess when the direction control element is in the non-ratcheting position, and to fit into the recess when the direction control element is in the reverse position. The protruding element impedes inadvertent operation of the tool release mechanism when the direction control mechanism is in either the forward or the reverse positions.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: April 4, 2000
    Assignee: JODA Enterprises, Inc.
    Inventors: Peter M. Roberts, John B. Davidson
  • Patent number: 6044731
    Abstract: A double-reversible ratchet wrench, which includes a body having a receiving chamber at one end, a ratchet wheel mounted within the receiving chamber, a stop block with two toothed portions mounted within the receiving chamber and meshed with the ratchet wheel to limit the direction of rotation of the ratchet wheel, a retainer ring mounted around the ratchet wheel inside the receiving chamber to hold the stop block in place, and an adjustment member mounted in the receiving chamber and turned to shift the stop block between two positions to control the reversing direction of the ratchet wheel.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: April 4, 2000
    Inventor: Chih-Ching Hsieh
  • Patent number: 5970552
    Abstract: A ratchet tool for assembly and disassembly-of a scaffold has a handle, a hammer tip, a ratchet gear, a socket and a prybar. The hammer tip is connected to a disc driver which has a male portion to engage a slot in the top of the gear allowing the gear to be turned manually. Thus the socket connected to the gear may be turned manually by finger turning of the hammer head. A prybar is formed on the end of the handle opposite from the head of the tool.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: October 26, 1999
    Assignee: Hand Tool Design Corporation
    Inventors: Lester H. Kwiecien, Paul L. Armstrong, II
  • Patent number: 5967002
    Abstract: The present invention relates to an air driven and manual rachet wrench. The wrench of the present invention includes a rotor which is rotated by way of an oscillatory member. The oscillatory member, in turn, is driven by way of an air powered drive assembly. A star shaped aperture is centrally formed within the rotor. This aperture is adapted to accept the stems of a variety of sockets. Although the rotor only rotates in one sense, the sockets can be inserted into either of the opposing faces of the rotor. Thus, through changing the face into which the socket is inserted, both clockwise and anti-clockwise socket rotation can be achieved.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: October 19, 1999
    Inventor: Joseph A. Pijanowski
  • Patent number: 5957009
    Abstract: A ratchet wrench includes a head having a slot for receiving a pawl. A driving member and an actuator are rotatably engaged in the head. A spring is engaged in the actuator and includes an arm engaged in an oblong hole of the pawl for allowing the actuator to rotate and to move the pawl to either of the narrower ends of the slot. The driving member may be rotated by the head in one direction when the pawl is engaged in one of the narrower ends of the slot and may be rotated in a reverse direction when the pawl is engaged in the other narrower end.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: September 28, 1999
    Inventor: Frank McCann
  • Patent number: 5957008
    Abstract: A new adjustable ratchet wrench for including forward, reverse and neutral operative positions. The inventive device includes a ratchet head assembly. An upper handle portion is secured to and extends downwardly from the ratchet head assembly. The upper handle portion has a hollow interior. The hollow interior has a neutral set bar slidably positioned therein. The neutral set bar has a generally U-shaped configuration with upper free ends extending inwardly of the ratchet head assembly. The upper free ends are angled outwardly for selectively abutting internal components of the ratchet head assembly. The neutral set bar has a spring positioned between the free ends thereof. An upper push rod extends downwardly from the neutral set bar. A lower end of the upper push rod extends outwardly of an open lower end of the upper handle portion.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: September 28, 1999
    Inventor: Paul S. Long
  • Patent number: 5946987
    Abstract: An offset ratchet wrench is provided having a base seat disposed between upper and lower bars. The base seat is an elongated member, including two lateral faces which are not in contact with the upper and lower bars. A top face of the base seat contacts the upper bar and a bottom face of the base seat contacts the lower bar. At least one pair of locating projections are respectively disposed on the top and bottom faces of the base seat for preventing the base seat from longitudinal or transverse sliding between the upper and lower bars.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 7, 1999
    Inventor: Hung-Yin Wei
  • Patent number: 5921158
    Abstract: A reversible ratchet wrench includes a ratchet body having a round head portion with a cylindrical, internally toothed opening therethrough forming a ratchet gear and defining a cavity. A ratchet mechanism, including a drive body, a pawl assembly and a reversing member, is disposed in the cavity, with the reversing member secured to the drive body for confining the pawl assembly therebetween. The head of the ratchet body has annular shoulder surfaces thereon respectively at opposite ends of and coaxial with the cavity, and respectively facing annular shoulder surfaces on the drive body and reversing member, for cooperation therewith to define first and second annular spaces, in which are respectively disposed annular seal members, each having a pair of radially inwardly extending and axially diverging flexible and resilient lips, respectively engageable with the shoulder surfaces defining the associated space for cooperation therewith to seal the cavity and center the ratchet mechanism on the head.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: July 13, 1999
    Assignee: Snap-on Tools Company
    Inventors: Randall J. Slusar, Jeffrey H. Hoff
  • Patent number: 5913954
    Abstract: A hand tool having a pawl with a flange formed on the bottom surface. A bore is formed axially in the pawl. A reversing lever is connected to the pawl. The pawl is received in an opening which has an annular shoulder, the flange on the pawl abutting the annular shoulder.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: June 22, 1999
    Assignee: Hand Tool Design Corporation
    Inventors: Robert L. Arnold, Dana L. Delaney, Derek Richner, James A. Van Lenten
  • Patent number: 5910197
    Abstract: A plurality of circumferentially-spaced driving lugs are formed on the improved square-drive tang of a wrench, such as a ratchet wrench; and these driving lugs cooperate with a corresponding plurality of recesses or pockets formed in the top portion of an improved interchangeable square-drive socket, thereby providing for improved torque transmission which is supplemental to, and not a substitute for, the square drive. The improved wrench is compatible with conventional sockets, and the improved socket is compatible with conventional wrenches.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 8, 1999
    Assignee: Hand Tool Design Corporation
    Inventor: Peter Constantine Chaconas
  • Patent number: 5884538
    Abstract: A ratchet wrench having a vertical bore in the handle. The vertical bore has a resilient member disposed therein. The resilient member has an enlarged central section. When the pawl of the ratchet wrench is moved from one alternate position to another, the enlarged central section is distorted.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 23, 1999
    Assignee: Hand Tool Design Corporation
    Inventor: James A. Van Lenten
  • Patent number: 5875693
    Abstract: A ratchet wrench includes a body formed entirely of glass-fiber-reinforced plastic material with a gear insert molded therein and a ratchet mechanism mounted on the insert and retained in place by retaining rings. The body includes layers of random discontinuous glass-fiber-reinforced plastic material and a band of unidirectional continuous glass-fiber-reinforced plastic material which are subjected to compression molding around the insert to form a composite wrench structure. Several insert configurations are disclosed.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: March 2, 1999
    Assignee: Snap-on Technologies, Inc.
    Inventors: Gregory A. Zurbuchen, Dean J. Iwinski
  • Patent number: 5860337
    Abstract: A hand tool for acting upon fasteners which are located in constricted areas. The hand tool comprises an elongated shaft having a handle member at one end and fork connector assembly located at the opposite end thereof. A variety of detachable ratcheting heads may be pivotally attached to the fork assembly. Each ratcheting head may be selectively set to allow only clockwise or counter-clockwise rotation thereof for tightening or loosening of fasteners.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: January 19, 1999
    Inventor: William J. Janssen
  • Patent number: 5857390
    Abstract: A light-weight, low-profile socket wrench system includes a set of cylindrical thin-walled sockets, each having a through axial opening sufficiently large to allow a bolt engaged by a nut of a size corresponding to that of the nut-receiving opening to pass through the axial opening and extend beyond the nut, and a ratchet wrench releasably engageable with the socket for applying rotational torque directly to a peripheral surface of the socket. In a preferred embodiment, the socket has a round peripheral surface around which a multiplicity of teeth are distributed, and the head of the ratchet wrench has a circular cylindrical opening in which the socket is releasably maintained with its teeth directly engaged by teeth on a pawl.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: January 12, 1999
    Inventor: Carlton L. Whiteford