Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Load releasing means
Patent
1987-04-03
1989-05-02
Marbert, James B.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Load releasing means
294 823, 294 8234, 114252, B63B 2160, B66C 134
Patent
active
048262293
ABSTRACT:
An improved portable cable release mechanism for mounting on the deck of a tow boat, tug, ship or dock and used to tow and dock barges, boats and ships, which mechanism is designed to receive one end of a tow cable or docking cable in order to secure and selectively release the vessels. The cable release mechanism includes a pelican hook pivotally attached to a frame which can be removably mounted on a dock or secured to the deck of a tow boat, ship or barge by means of a clevis plate. A sliding keeper normally secures the pelican hook in closed configuration in the frame and release of a towing or docking cable from the pelican hook is automatically effected by activating an air or hydraulic cylinder having a piston provided in cooperation with the keeper ring. This action extends the cylinder piston and forces the keeper from engagement with the pelican hook, allowing the pelican hook to pivot rearwardly responsive to the load on the cable. Alternatively, a lanyard cable is provided for manual release of the pelican hook.
REFERENCES:
patent: 4540210 (1985-09-01), Smith
patent: 4555133 (1985-11-01), Danielsen et al.
Harrison John M.
Marbert James B.
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