Anchor insert for embedment in a concrete slab

Details Anchor insert for embedment in a concrete slab Anchor insert for embedment in a concrete slab

1978-01-10

1979-12-18

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Lewises

52125, 52707, B66C 166

Patent

active

041791517

ABSTRACT:
An improved anchor insert adapted to be embedded in a concrete slab for cooperation with a pick-up unit which includes a locking stem having a pair of lift shoulders extending from opposite sides of the stem, comprises a concrete-excluding hollow cage adapted to be emplaced within a form for a concrete slab for insertion of the locking stem and lift shoulders into the cage after pouring the slab, the cage including a pair of spaced apart shoulders on opposite sides of and spaced from the base of the cage, the shoulders being adapted for interengagement with the lift shoulders and also with a pair of anchor rod sections, and a pair of spaced apart anchor rod sections in such engagement, wherein the locking stem of a pick-up unit may be inserted in the cage and rotated for bringing the lift shoulders into lifting engagement with the cage shoulders, and a lifting force when imparted to the locking stem is transmitted to the anchor rod sections for lifting a slab in which the insert is embedded.

REFERENCES:
patent: 2772560 (1956-12-01), Neptune
patent: 2794336 (1957-06-01), Ballou
patent: 3195278 (1965-07-01), Ballou
patent: 3404503 (1968-10-01), Courtois et al.
patent: 3431012 (1969-03-01), Courtois et al.
patent: 3596971 (1971-08-01), Courtois et al.
patent: 3712014 (1973-01-01), Waerner

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