Screw-in fastener for a tubular anchor embedded in a concrete el

Details Screw-in fastener for a tubular anchor embedded in a concrete el Screw-in fastener for a tubular anchor embedded in a concrete el

1984-07-02

1986-10-07

Holko, Thomas J.

Handling: hand and hoist-line implements

Grapple

Lewises

411400, 411407, 521255, 52698, 52704, B66C 100, F16B 2300

Patent

active

046155546

ABSTRACT:
A screw-in fastener for an anchor embedded in a precast concrete element includes a coupling member, to which a transport anchor is applied, a threaded pin insertable into the anchor positioned within the concrete element, and a supporting plate, from which the pin outwardly extends. The supporting plate has a circular end face supported against the upper surface of the concrete element.

REFERENCES:
patent: 2600974 (1952-06-01), Crawford
patent: 3029486 (1962-04-01), Raymond
patent: 3305995 (1967-02-01), Armstrong et al.
patent: 3883170 (1975-05-01), Fricker et al.
patent: 4091708 (1978-05-01), Jacobson
patent: 4173367 (1979-11-01), Haeussler

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