Locking system for boat water-lifts

Details Locking system for boat water-lifts Locking system for boat water-lifts

B - Operations, Transporting

63

C

B63C 3/06 (2006.01) B66F 3/26 (2006.01) B66F 7/08 (2006.01) F15B 15/26 (2006.01)

Patent

CA 2113030

LOCKING SYSTEM FOR BOAT WATER-LIFTS Abstract of the Disclosure The piston rod of a lift cylinder unit on a boat lift is selectively locked from extending or retracting by a locking mechanism having a clamping ring which is sleeved on the piston rod and is biased into locking position by a compression spring engaging a piston in a locking cylinder. This cylinder is selectively supplied with pressurized water to compress the spring and thereby release the clamping ring. Hydraulic lines extend to the lift cylinder and locking cylinder from a control manifold located adjacent the boat lift for remotely operating the lift and the locking mechanism.

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