Plastic screw anchor

Details Plastic screw anchor Plastic screw anchor

1983-07-27

1986-04-01

Dorner, Kenneth J.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Including sleeve and distinct tapered expander

411 15, 411182, F16B 1306

Patent

active

045794928

ABSTRACT:
A plastic screw anchor having legs each formed with a recess which provides the leg with good flexibility whereby the legs can easily deform during the insertion thereof into an aperture of a supporting plate and also provides a strong grip between the screw anchor and the supporting plate. A wing integrally formed on each leg prevents the screw anchor from coming out of the aperture after having once been inserted therein.

REFERENCES:
patent: 2836215 (1958-05-01), Rapata
patent: 3241428 (1966-03-01), Fischer
patent: 3323404 (1967-06-01), Fischer
patent: 4240323 (1980-12-01), Kojima
"Shakeproof Plasti-Grommet" brochure copyright by Shakeproof, Division of Illinois Tool Works, Chicago, 1954, (4 pages).

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