F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
137/94
F15B 1/02 (2006.01) B66D 1/44 (2006.01) F15B 11/16 (2006.01)
Patent
CA 1047360
WINCH CONTROL ABSTRACT OF THE DISCLOSURE A control for a hydraulically operated winch or the like having a hydraulically disengaged brake, a multi-speed, hydrauli- cally controlled transmission, and a drum to be driven or braked. The control system includes means whereby the transmission is placed in neutral, automatically, whenever the brake is to be disengaged to lower a load and a control valve including a spool with small and large slots along with a drum-driven metering pump controls fast and slow lowering speeds. Emergency free fall of the load is accomplished in the valve by bypassing the small metering slot. An arrangement of an accumulator and check valves allow hydraulic disengagement of the brake even if the engine is dead and there is provided a recirculating hy- draulic circuit to conserve oil in such an instance so that the accumu- lator volume can be minimized. A system is included whereby the accumulator may be discharged, when the prime mover is inoperative to allow the operator of the winch to leave the location with the load suspended with the knowledge that the load cannot be lowered either intentionally or accidentally.
286036
Golan Kenneth F.
Winzeler James E.
LandOfFree
Winch control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Winch control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Winch control will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-531622