Winch for the slip-free hauling of a rope
AssigneeFirma Naviga-Etablissement
InventorWalter Mehnert
Life of this patent
Estimating the term…
Abstract
The present winch may be a so-called single speed or double speed winch. The rope, which loops around a clamping roller with a looping angle smaller than 360.degree., is operated by at least one power system controlled by a control system through a spring clutch. The control system can close the spring clutch for full power transmission or open the spring clutch completely to interrupt the power train from the power system to the clamping roller. In addition the clutch may be opened partially to control the power transmission for precisely rotating the clamping roller in both rotational directions and stopping the clamping roller in any desired angular position.
Claims15
A winch, comprising base means, crank power input means and clamping sheave means operatively supported on said base means, power transmission means including controllable coupling spring means operatively interposed between said power input means and said sheave means for forming a power transmission path, and control means operatively connectable to said coupling spring means for closing, opening or partially opening said power transmission path whereby the movement, speed, acceleration, deceleration and stopping of said sheave means is precisely controllable, said power transmission means comprising upper and lower coupling members (13, 14), said upper coupling member (13) having a shoulder forming a stop limiting upward movement of said coupling spring means (15), said winch further comprising sleeve free wheeling means (12) inserted into said upper coupling member with a press fit.
A winch, comprising base means, crank power input means and clamping sheave means, power transmission means operatively interposed between said crank power input means and said sheave means, said power transmission means comprising two partially identical power transmission systems, including components forming part of both systems, control means including coupling spring means operatively connected for controlling one of said systems by said control means through said coupling spring means, first sleeve free wheeling means (139) operatively arranged to short circuit the other power transmission system on the load side thereof, second free wheeling means (112) including an intermediate member (132) operatively arranged in said one system for fully interrupting said one system when said one system is rotated in one direction and for partially interrupting said one system when said one system is rotated in the opposite direction, said winch further comprising upper and lower clutch means (113, 114), connector tulip means (134) having inner gear teeth, and needle bearing means (140) operatively interposed between said upper clutch means (113) and said lower clutch means (114), said upper clutch means being firmly coupled to said connector tulip means (134).
Dependencies are inferred from the claim text.