Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Bushing – Providing strain relief
Patent
1989-02-27
1990-02-20
Godici, Nicholas P.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Bushing
Providing strain relief
248 56, 174152G, 174153G, 174 65G, 174DIG8, 277178, 277 26, 264230, 264319, 264345, B65D 5306
Patent
active
049013955
ABSTRACT:
According to the present invention an elastomeric grommet includes an axial extending central tubular portion of diameter less than the diameter of the compartment wall opening. A flange portion is integral with the central tubular portion and has a diameter greater than the diameter of the compartment wall opening to limit the extent of insertion of the tubular portion into the compartment wall opening. A retention means, such as a flexible annular lip, is integral with the central tubular portion in axial spaced relation from the flange portion and has a free state dimension which is greater than the diameter of the central tubular portion. The integral retention device is yieldable to permit its insertion and the insertion of the tubular central portion through the compartment wall opening and then returns to its free state condition to retain the grommet in loose fitting relation with the compartment wall. An annular ring of heat expanding material is carried by the grommet and expands in response to the occurrence of a predetermined temperature condition to fill the space between the grommet and the compartment wall and thereby seal the compartment wall opening.
REFERENCES:
patent: Re19840 (1936-01-01), Woodall
patent: 2892013 (1955-05-01), Gomberg
patent: 3244802 (1966-04-01), Sturtevant et al.
patent: 3518359 (1970-06-01), Trimble et al.
patent: 3758916 (1973-09-01), Wetmore
patent: 3793672 (1974-02-01), Wetmore
patent: 3990661 (1976-11-01), De Groef
patent: 4041241 (1977-08-01), Olmstead et al.
patent: 4043022 (1977-08-01), Kisuna et al.
patent: 4232712 (1980-11-01), Squires
patent: 4383692 (1983-05-01), Proctor
patent: 4797513 (1989-01-01), Ono et al.
Search Report dated Jun. 23, 1988.
Brown Edward A.
General Motors Corporation
Godici Nicholas P.
Leahy Charles E.
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