G - Physics – 05 – D
Patent
G - Physics
05
D
341/96
G05D 13/62 (2006.01) B66D 1/00 (2006.01)
Patent
CA 1155199
WINCH SAFETY CONTROL ABSTRACT OF THE DISCLOSURE A motor of the type having a low speed ratio and a high speed ratio is disclosed. A fluid port in said motor corresponds to each of said speed ratios and a port conduit extends from each respective port. A single valve is operatively connected to all of said port conduits and is spring biased to supply fluid to the low speed ratio. A solenoid operatively associated with the valve controls the shifting of the valve to supply fluid under pressure to a selective one of said port conduits so that the motor is placed in the speed ratio corresponding to the port receiving the pressurized fluid. In the preferred embodiment which describes a two-speed fluid actuated motor for a winch on a crane, a first fluid pressure sensor is placed in the low speed port conduit and at a predetermined pressure level in the low speed port conduit sends out an impulse to prevent the solenoid from being energized to shift the valve to supply pressurized fluid to the high speed ratio. A second sensor is placed in the high speed port conduit and sends out an impulse to disable the electrical circuit of the solenoid to allow the valve to return to a position to supply fluid to the low speed ratio port when the pressure in the high speed port conduit is above a predetermined level. -0-
363600
Kidde Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
Winch safety 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 safety control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Winch safety control will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-861512