F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
138/47
F16D 31/00 (2006.01) B66D 1/44 (2006.01) F16D 57/00 (2006.01)
Patent
CA 1044988
WINCH VALVE DRAG BRAKE CONTROL A B S T R A CT A winch has a powered rotatable drum for winding in and releasing a cable, and the drum is driven and controlled by fluid pressure operated clutches and brakes. A one-way clutch is associated with the brake and allows said drum to rotate in a reel-in direction when said brake is engaged. An auxiliary brake is provided for stopping reel-in rotation of said drum caused by viscous drag of hydraulic fluid on the drive means when a valving element is in the Brake-On position. A fluid flow directing system is located intermediate a winch lubricating system and the auxiliary drag brake. It directs fluid flow from the winch lubricating system to the auxiliary drag brake responsive to shifting of the valving element to a Brake-On position, and blocks the fluid flow from the winch lubricating system to the auxiliary drag brake responsive to shifting of the valving element to any Brake-Off, Reel-In or Free-Spool positions.
288239
Allen Norman R.
Hoehn Richard F.
Wineburner Ronald E.
LandOfFree
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