Cable pulling apparatus
AssigneeTRW Inc.
InventorJames N. Zehren
Life of this patent
Estimating the term…
Abstract
Apparatus for moving flexible elongated members, such as cable, in which a wheel having a peripheral abutment surface against which the elongated member is to be clamped, carries a plurality of pivoting clamp elements spaced circumferentially. The position of the clamp elements relative to the peripheral surface of the wheel is controlled by a guide track followed by the clamp elements as the wheel rotates. When the clamp elements have been closed upon a flexible member carried by the periphery of the wheel, pressure is applied to the clamp elements from an arcuate surface of a block adjacent to a portion of the periphery of the wheel, the position of the block relative to the wheel being adjustable.
Claims6
Apparatus for moving a flexible elongated member, comprising a rigid wheel supported for rotation about an axis and having as a part thereof of circular abutment surface along the circumference of the wheel against which the elongated member is to be clamped during rotation of the wheel, a plurality of clamping means supported upon the wheel at positions spaced circumferentially of the wheel, each of said clamping means comprising a clamp element supported for movement toward and away from said abutment surface, guide means adjacent to the wheel for moving said clamp elements toward said abutment surface during a portion of the rotation of the wheel and for moving said clamp elements away from said abutment surface during another portion of the rotation of the wheel, and means for pressing said clamp elements toward said abutment surface and against said elongated member located between said clamp elements and said abutment surface during a portion of the rotation of said wheel intermediate the aforesaid portions, said pressing means comprising a stationary abutment surface, each of said clamp elements having means for engaging said stationary abutment surface said engagement with said stationary abutment surface applying a force to a clamp element and forcing the clamp element toward the abutment surface of said wheel to clamp said elongated member against the abutment surface of said wheel.
Dependencies are inferred from the claim text.