B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
B66F 11/04 (2006.01) E04G 3/34 (2006.01)
Patent
CA 2200399
A wire rope supply path length adjusting device for adjusting change in length of a wire rope supply path caused by pivoting of a pivotable arm pivotably supported on a base member for suspending an object to be supported by means of wire ropes includes a pair of fixed pulleys of the same diameter provided rotatably about axes of rotation parallel to a rotation axis of the pivotable arm across the wire rope supply path at positions which are spaced from the rotation axis of the pivotable arm on the side of said base member, and a pair of movable pulleys of the same diameter provided rotatably about axes of rotation parallel to the rotation axis of the pivotable arm across the wire rope supply path at positions which are spaced from the rotation axis of said pivotable arm on the side of the pivotable arm. The wire ropes are caused to engage on the pulleys on the pivoting side among the respective pairs of pulleys and the diameters of the respective pairs of pulleys and the distances of the respective pairs of pulleys from the rotation axis of said pivotable arm are selected at values at which length of the wire rope supply path between the respective pairs of pulleys is maintained substantially constant regardless of change in an angle of rotation of said pivotable arm.
Moffat & Co.
Nihon Biso Co. Ltd.
LandOfFree
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