Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1981-01-12
1983-01-18
Marbert, James B.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
294 89, B66C 136
Patent
active
043689140
ABSTRACT:
A pickup unit for releasable connection to an anchor insert embedded in a body, such insert having an exposed head portion and a reduced shank portion extending from the head portion and into the body, includes a connecting member rotatable adjacent to the insert head portion, such connecting member having a recess of the bayonet slot type receiving the insert head portion captive within the connecting member while the insert shank portion extends outwardly therefrom upon relative rotation between the connecting member and the insert in one direction, and such connecting member releasing the insert head portion upon such relative rotation in the opposite direction, a latch mounted for in and out movement relative to the recess for respectively preventing and permitting relative movement of the insert head portion out of the recess, a lever movably connected to the connecting member, structure for coupling the lever and the latch, and structure for engaging the lever with such body, whereby a force may be applied to the lever for moving the same relative to the connecting member, thereby to cooperatively move the latch outwardly relative to the recess and rotate the connecting member for releasing the pickup unit from the insert.
REFERENCES:
patent: 3883170 (1975-05-01), Fricker
patent: 4017115 (1977-04-01), Holt et al.
patent: 4068879 (1978-01-01), Torbet et al.
patent: 4173367 (1979-11-01), Haeussler
patent: 4204711 (1980-05-01), Lancelott et al.
Publication of the Dayton Sure Grip & Shore Company entitled "The Split Lift System for Tilt-Up Construction by Dayton Sure Grip".
Berry Homer E.
Truitt Robert E.
Marbert James B.
Superior Concrete Accessories, Inc.
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