Screw grommet

Details Screw grommet Screw grommet

1988-05-18

1990-05-22

Wilson, Neill R.

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

Threaded fastener locked to a discreet structure

Nut, and means to engage substructure on its opposite faces...

411510, 411913, F16B 1900, F16B 3704

Patent

active

049273060

ABSTRACT:
A screw grommet of synthetic resin having an enlarged head part adapted for abutment against the surface of a mounting panel, a shank adapted for engagement with an oblong fitting hole bored in the mounting panel, a pair of integral shoulders extending from opposite walls of the shank, and a pair of integral elastic arms extending at a prescribed angle from the other pair of opposite walls of the shank. The pair of elastic arms and the pair of engaging shoulders engage with the corresponding edges of the oblong fitting hole in the mounting panel. The screw grommets are always retained in the correct posture in the oblong fitting holes and absorb errors in manufacture or fabrication. The screw grommets are also capable of absorbing variations in the relative positions of the fitting holes in the panel and the through-holes in a part to be attached caused by expansion or contraction due to a change in temperature.

REFERENCES:
patent: 2788047 (1957-04-01), Rapata
patent: 2836215 (1958-05-01), Rapata
patent: 3087370 (1963-04-01), Iaia
patent: 3481242 (1969-12-01), Topf
patent: 3842709 (1974-10-01), Fuqua
patent: 4077300 (1978-03-01), Yoda
patent: 4133246 (1979-01-01), Small
patent: 4521148 (1985-06-01), Tanaka

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