Patents Assigned to WorkTools, Inc.
  • Patent number: 6079532
    Abstract: A stepless ratchet one way clutch mechanism as applied to an improved screwdriver tool is disclosed. A wheel is rotationally fixed to a drive shaft. Two couplings are rotatably mounted about the drive shaft and extend away from the drive shaft. The wheel is between the couplings. A lever is pivotably attached to the couplings at a pivot pin between the couplings. The pivot pin is beyond the wheel outer diameter. When the lever is rotated in relation to the couplings an engaging edge of the lever presses the outer diameter surface of the wheel. The interface between the lever and wheel is of high friction. The interface has a "V" groove on one of the lever or wheel, and a "V" chamfer rib on the other of the lever or wheel. An elongated resilient spring biases the pivot pin either directly or through the lever or coupling to cause the lever to rotate in relation to the couplings. When the lever is held at a distal end while the pin is biased, the wheel is prevented from rotating in one or the other direction.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: June 27, 2000
    Assignee: WorkTools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 6039652
    Abstract: A Hookes universal joint assembly which, in a preferred embodiment, comprises two series connected universal joints to produce an angle change of 60.degree. to 70.degree.. A rigid housing confines input and output rotating drive shafts. In a preferred embodiment the yokes and cross members are formed as flat steel plates with tab-into-notch engagements. A method to retain an input shank and an end linkage to a drive shaft is disclosed. End linkages have parallel extending legs where the legs have protruding bumps at a distal end to engage exterior notched slots of input and output drive shafts. The drive shafts are identical in structure. An input shank is permanently held in a recess of the input drive shaft by engagement of a rib of the housing into a groove around the input shank.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: March 21, 2000
    Assignee: WorkTools, Inc.
    Inventor: Joel Marks
  • Patent number: 5988478
    Abstract: A simplified fastening tool which uses the energy stored in a spring to install fasteners by an impact blow is disclosed. A housing body is preferably cast or molded. A one-piece plastic hand lever is pivotably attached to the body where the pivoting action is by sliding in a circular arcuate channel. A staple feeding track is slidably mounted to the bottom of the housing and includes a rear end element with forwardly extending resilient latching elements to secure the track. A hand grip opening extends forward up to the plunger and the hand lever is hinged at the rear of the housing.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: November 23, 1999
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5791209
    Abstract: A self-forming socket having a plurality of retractable pins bundled in parallel within a housing is disclosed. The bundled pins may displace longitudinally and are biased by spring force away from a frame onto which the pins are slidably held. A spacer pin may be positioned at the center of the socket and is similarly biased away from the frame under spring force. When the socket is forced over a fastener, nut, or bolt head, groups of pins are pushed inward toward the frame and into the housing thereby conforming the pins to the contours of the fastener. Applying a torque to the socket transfers the torque through the bundled pins to the fastener. Each pin has a circular cross-section and the interior walls of the housing containing the bundled pins has a hexagonal shape and does not contain any right angles. The pins are packed in a hexagonal arrangement.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: August 11, 1998
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5724700
    Abstract: A low profile, flexible windshield wiper assembly has a frame constructed from flat sheet spring steel. The frame attaches to a semi-rigid spline at distinct pressure points, while the spline supports a rubber wiping blade. At least some of the pressure points are located at the end of cantilevered fingers formed in the frame so that the spline may flex independently from the frame. The cantilevered fingers allow semi-pivotable portions of the frame to flex independently from the rest of the frame to enhance curve conformance on a windshield. The frame attaches along the center of the spline while the blade attaches along the edges of the spline. The present invention allows the pressure points to be efficiently formed out of the frame material.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 10, 1998
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5715563
    Abstract: A windshield wiper adaptor system that fits hook, bayonet and small and large pin wiper arm styles is disclosed. A bracket semi-permanently snap fits to a spring steel flat strip wiper frame. Adaptors fit to the bracket. The bayonet arm adaptor uses an easily molded slot to provide the detent for holding the arm. A resilient element presses the bayonet arm from below. The hook/bayonet adaptor pin, and pin arm adaptors, are held in the bracket by a barbed resilient arm attached to the pins. A further extension on the resilient arm of the pin arm adaptors engages the pin arm annular groove. Deflecting the arm causes the barb to engage the bracket while the same motion engages the pin arm groove. The adaptors could also be used in a convention frame where the bracket is not applicable.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: February 10, 1998
    Assignee: Worktools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5699949
    Abstract: A manually powered fastening tool which stores and instantly releases the energy of a spring such that it may force a staple or other fastener into an object by an impact blow is disclosed. An actuating lever engages a plunger in an upward motion against a spring bias and in a sideways direction in a release motion. An arcing motion of the lever causes an element of the lever to rotate and slide rearward from the plunger and disengage from the plunger, thereby allowing the lever to slide sideways off an angled surface of the plunger. The plunger, once released and under spring bias, strikes a staple and drives the staple out from the tool into the object.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: December 23, 1997
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5664722
    Abstract: A manually powered fastening tool which stores and instantly releases the energy of a spring such that it may force a fastener into an object by an impact blow in which the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. The main spring is a single piece flat torsion spring which decreases in cross-section away from its fulcrum point to enable the entire spring to provide energy storage. The operating handle is linked to the spring through a low friction rolling element which provides varying leverage to allow a constant operating force through the operating handle motion. The staple guide track includes position and latch feature within a one piece assembly.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: September 9, 1997
    Assignee: Worktools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: 5622090
    Abstract: A self-forming socket having a plurality of retractable pins bundled in parallel within a housing. The bundled pins may displace longitudinally and are biased by spring force away from a frame onto which the pins are slidably held. A spacer pin may be positioned at the center of the socket and is similarly biased away from the frame under spring force. When the socket is forced over a fastener, nut, or bolt head, groups of pins are pushed inward toward the frame and into the housing thereby conforming the pins to the contours of the fastener. Applying a torque to the socket transfers the torque through the bundled pins to the fastener. Each pin has a circular cross-section and an enlarged head and the interior walls of the housing containing the bundled pins has a hexagonal shape and may not contain any right angles. Grooves can be formed in the sides of the hexagonal shape to receive therein circular sides of adjacent ones of the enlarged heads. The pins are packed in a hexagonal arrangement.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: April 22, 1997
    Assignee: WorkTools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 5620073
    Abstract: A reversible, stepless one way clutch mechanism which is suited for use in screwdriver type hand tools according to one embodiment. The improvements comprising: a simplified torque transmitting friction element which is direction selectable by a slide switch, the friction element being a flat plate substantially surrounding, the friction element contacting smooth walls inside of a metal cylinder which is formed from a single thickness metal sheet through a deep drawing process.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: April 15, 1997
    Assignee: WorkTools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 5613627
    Abstract: An adjustable garment hanger comprising of a frame depending from a hook is disclosed. The frame is comprised of two inclined arms intersected by an optional cross bar. Within each inclined arm is an integrally formed locking bar that extends from the integral base to a free distal end. Each locking bar includes notches and a pushbutton at the distal end. Ribs that form channels and that may form ramps are disposed on the sides of the inclined arms. Movable covers having internal ribs slide onto each inclined arm while the internal ribs engage the ramps, channels, and notches. The ribs when supported by the ramp causes the outer ends of the covers to be tilted upwards. Other ribs located on the covers engage the notches of the locking arms thereby fixing the relative extended or retracted position of the covers to the inclined arms. The locking arms are biased outward away from the frame thereby placing the notches into engagement with the ribs of the cover.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: March 25, 1997
    Assignee: WorkTools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 5511716
    Abstract: A manually powered fastening tool that stores and instantly releases the energy of a spring such that it forces a staple or other fastener into an object by an impact blow, wherein the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. A staple ejecting plunger is unstably linked to spring actuating levers such that with the removal of a light holding force, the plunger and actuating levers are de-linked. The tool housing comprises a cantilevered rear profile.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 30, 1996
    Assignee: Worktools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 5505362
    Abstract: A manually powered fastening tool that stores and instantly releases the energy of a spring such that it forces a staple or other fastener into an object by an impact blow, wherein the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. A staple ejecting plunger is unstably linked to spring actuating levers such that with the removal of a light holding force, the plunger and actuating levers are de-linked. The tool housing comprises a cantilevered rear profile.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 9, 1996
    Assignee: Worktools, Inc.
    Inventor: Joe S. Marks
  • Patent number: 5427299
    Abstract: A manually powered fastening tool that stores and instantly releases the energy of a spring such that it forces a staple or other fastener into an object by an impact blow, wherein the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. A staple ejecting plunger is unstably linked to spring actuating levers such that with the removal of a light holding force, the plunger and actuating levers are de-linked. The tool housing comprises a cantilevered rear profile.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: June 27, 1995
    Assignee: Worktools, Inc.
    Inventor: Joel S. Marks
  • Patent number: 5407118
    Abstract: A manually powered fastening tool which stores and instantly releases the energy of a spring such that it may force a staple or other fastener into an object by an impact blow in which the operating handle is hinged near the end of the tool body opposite the end from which the staples exit. A staple ejecting plunger is unstably linked to spring actuating levers such that with the removal of a light holding force, the plunger and actuating levers are delinked. The tool housing comprises a cantilevered rear profile.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: April 18, 1995
    Assignee: Worktools, Inc.
    Inventor: Joel S. Marks
  • Patent number: D384257
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: September 30, 1997
    Assignee: WorkTools, Inc.
    Inventors: Joel Steven Marks, John Kevin Clay
  • Patent number: D384258
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: September 30, 1997
    Assignee: WorkTools, Inc.
    Inventors: Joel Steven Marks, Ernesto Victor Quinteros
  • Patent number: D385762
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: November 4, 1997
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: D400490
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: November 3, 1998
    Assignee: WorkTools, Inc.
    Inventor: Joel Steven Marks
  • Patent number: D417185
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: November 30, 1999
    Assignee: Worktools, Inc.
    Inventor: Joel Steven Marks