Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1981-02-02
1982-11-09
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
B66C 136
Patent
active
043581463
ABSTRACT:
A release mechanism which is releasable from the direction of the load and requires that two levers be pulled in sequence and held from the direction of the load for release. Hook-up may be achieved manually with one hand.
REFERENCES:
patent: 1242809 (1917-10-01), Irwin
patent: 3167345 (1965-01-01), Dukes
patent: 4201410 (1980-05-01), Crawford et al.
Cherry Johnny D.
Massachusetts Institute of Technology
Reynolds Leo R.
Smith, Jr. Arthur A.
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