Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1985-12-09
1987-03-10
Friedman, Carl D.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 45, F16B 1304
Patent
active
046487662
ABSTRACT:
A protective/decorative liner panel is mounted on a sheet metal support panel by molded plastic fasteners which allow the liner panel to be subsequently detached and reattached. Each fastener comprises a pin which is initially joined to a hollow grommet by a frangible web which aligns the pin shank with a bore in the grommet. The pin head is manually and twistably engageable with an installation hole in the liner panel and then the grommet is axially engaged with an installation hole in the support panel as the liner panel is moved toward the support panel. A hammer blow on the pin head fractures the web, forces the pin shank into the bore and moves the liner panel to its mounted position relative to the support panel. Serrations on the pin shank frictionally engage the bore wall to hold the pin and its attached liner panel in mounted position. First and second annular flexible resilient sealing flanges on the grommet and pin, respectively, seal the installation hole in the support panel against undesired liquid leakage. The sealing flange on the pin is large enough to encapsulate the sealing flange on the grommet when the pin shank is fully inserted in the grommet bore. The liner panel is detachable by pulling it away from the support panel and causing the pin shank to withdraw from the grommet bore, but the pin and grommet remain attached to their respective panels. The liner panel is re-attached by manually re-aligning the pin shank with the grommet bore and forcing it thereinto.
REFERENCES:
patent: 4122583 (1978-10-01), Grittner et al.
patent: 4233878 (1980-11-01), McGauran et al.
patent: 4375342 (1983-03-01), Wollar et al.
patent: 4393551 (1983-07-01), Wollar et al.
Friedman Carl D.
Kirby Thomas F.
Nilles James E.
Phillips Plastics Corporation
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