Locking flapper type latch for crane hook

Details Locking flapper type latch for crane hook Locking flapper type latch for crane hook

1989-07-24

1990-08-14

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

245995, B66C 136

Patent

active

049481908

ABSTRACT:
A flapper type gate latch for a crane hook includes a hand operated interlocking prevent member which in one mode can be immovably retained closing the mouth of the hook, and in another mode can be immovably retained permitting the free movement of the gate latch from its biased normally closed position to a position wherein the mouth of the hook is open.

REFERENCES:
patent: 926156 (1909-06-01), Waterhouse et al.
patent: 1239301 (1917-09-01), Pearson
patent: 2514656 (1950-07-01), Manson
patent: 3575458 (1971-04-01), Crook et al.
patent: 3831994 (1974-08-01), Martin
patent: 4062092 (1977-12-01), Tamada et al.
patent: 4546523 (1985-10-01), Bailey

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