External-cone Actuated Patents (Class 279/122)
  • Patent number: 5029356
    Abstract: A sewer augering apparatus and more particularly a sewer augering apparatus having a power feed and manual lock apparatus with actuation thereof by an, axially slideable actuator.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: July 9, 1991
    Assignee: General Wire Spring Company
    Inventors: Lee Silverman, Norman J. Borgo
  • Patent number: 3978767
    Abstract: An apparatus for gripping the interior surface of an annular opening in a workpiece includes a baseplate and a set of elements circularly arranged and coaxial with a shaft or stud extending through and perpendicular to the baseplate. The elements are circumferentially spaced apart and are slidable radially of the shaft.Each element has a pair of aligned curved slots opening respectively to the opposite circumferential ends thereof. Biasing springs are secured to the baseplate and positioned thereon to extend from a slot in one element to the adjacent slot in the adjacent element. These biasing springs bear against the side surfaces of adjacent slots for biasing the elements radially inwardly to a contracted position. An actuating member which is in the shape of a camming disc, is movable relative to the baseplate and cooperates with the elements to move them radially outwardly so that they engage and grip the interior surface of the opening in the workpiece.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: September 7, 1976
    Assignee: Joel C. Levin
    Inventor: Morris B. Levin
  • Patent number: 3977065
    Abstract: Apparatus for crimping a fitting onto a hose or the like, including a ram with a slideable piston for moving a set of crimping dies together, wherein the piston has a central passageway extending along its entire length so that a hose can extend through the back end of the machine.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: August 31, 1976
    Assignee: Wyle Laboratories
    Inventor: John W. Johnson