Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1994-08-22
1997-01-14
Kramer, Dean
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
2941101, 294118, B66C 300
Patent
active
055931995
ABSTRACT:
A grapple particularly adapted for use with a helicopter is able to control heavy loads and to latch onto such loads, or release the same, by remote control from the helicopter. Shock absorbing features serve to minimize the effects of such loads on helicopter operation. The weight of the arms and frame in one embodiment provide the necessary latching action, while in other embodiments the latching system is operated hydraulically, either separately as to each arm/frame pairs or by use of a single hydraulic control for both arm/frame pairs. A hydraulic pressure sensitive device is provided to adapt the amount of shock absorption to the magnitude of the load. Spring assistance to the load-grasping process is also incorporated into the device.
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patent: 4396215 (1983-08-01), McCutcheon
patent: 4783106 (1988-11-01), Nutter
Fandrich Helmut E.
Krammer Kelly A.
Helmut Edward Fandrich
Kramer Dean
Lovell William S.
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