Pinion Patents (Class 81/96)
  • Patent number: 11618145
    Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a driven or bottom-dead-center (BDC) position for driving a fastener into a workpiece and a drive unit for providing torque to move the driver blade from the BDC position toward the TDC position. The drive unit includes an output shaft. The powered fastener driver also includes a rotary lifter engageable with the driver blade. The lifter is configured to receive torque from the drive unit in a first rotational direction for returning the driver blade from the BDC position toward the TDC position. The powered fastener driver further includes a kickout arrangement located between the lifter and the output shaft. The kickout arrangement is configured to permit limited rotation of the lifter relative to the output shaft between a first position and a second position.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: April 4, 2023
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: David A. Bierdeman, Mackenzie J. Nick, Beth E. Cholst, Troy C. Thorson, Nathan Bandy, Jacob P. Schneider
  • Patent number: 8925425
    Abstract: A wrench fitted with a handle and a ring that can be swiveled open to grip a screw head or a nut with a positive fit, whereby the ring has a first segment that is arranged on the handle, and a free second segment as well as a connecting member that joins the second segment to the first segment in an articulated manner. A lever is provided on the connecting member so that the ring that can be swiveled open.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: January 6, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventor: Thomas Merhar
  • Patent number: 4452108
    Abstract: An improved ratcheting pipe wrench which includes a first toothed jaw formed on a first member and a second toothed jaw rotatably carried by a second member provided with an elongated handle portion. The first member has a shank portion which is slidably receivable in a guide way formed in the second member. The guide way is configured to provide clearance to the shank portion of the first member so as to permit both longitudinal and pivotal, or up and down rocking movement of the first member relative to the second member. With this construction the jaws of the wrench can readily be separated to accommodate a pipe, nut or bar (work piece) of various sizes. Further, with work piece in position between the toothed jaws, pressure exerted on the handle portion of the second member will tend to increasingly tighten the jaws about the work piece to provide a positive gripping action.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: June 5, 1984
    Inventors: Lawrence F. Irwin, Robert Millray