Pickup unit for lifting concrete body

Details Pickup unit for lifting concrete body Pickup unit for lifting concrete body

1978-02-28

1979-11-06

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294 89, 294 90, B66C 136, B66C 166

Patent

active

041733673

ABSTRACT:
A pickup bolt is embedded in a concrete body with its head spaced from the surface of this body. A pickup member is pivotal on a shackle hung from a crane cable or the like and has a generally radially extending actuation arm and an angularly elongated and outwardly open pickup slot lying generally in a plane perpendicular to the pivot axis. This slot has a relatively wide end permitting radial passage of the bolt head into and out of the interior of the pickup member and an angularly opposite relatively narrow end which is insufficiently wide to permit passage of the head out of the body. Thus the pickup member can be positioned over the head with its wide end and then swung angularly through a distance equal to the length of the slot to lock this pickup member on the bolt. A secantally displaceable locking bolt may be provided in the pickup member to prevent passage of the head of the pickup bolt along the passage toward the wide end.

REFERENCES:
patent: 958978 (1910-05-01), Spencer
patent: 2184812 (1939-12-01), Hendrix
patent: 2523434 (1950-09-01), Johnson
patent: 3499676 (1970-03-01), Haeussler

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