Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1986-06-26
1988-01-19
Halvosa, George E. A.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
29416, 123195C, 188379, 220222, 220378, 267136, 2671404, 2671414, F02B 7711
Patent
active
047198923
ABSTRACT:
A cavity closure, such as an engine accessory or inspection cover, is provided having separate rim and central panel members secured together by a vibration absorbent elastomer which acts both to seal a gap between the memebrs and the outer periphery of the closed opening against leakage and to minimize noise generation by the central panel by damping panel vibrations and isolating the panel against the transmission of vibrations to it from the supporting rim and engine housing. A preferred manufacturing method involves forming the rim and central panel as a unit and then separating them by shearing to form opposed edges of identical configuration which are longitudinally displaced prior to applying the bead joining the members and providing sealing and vibration isolation.
REFERENCES:
patent: 2323216 (1943-06-01), Goldschmidt
patent: 2426800 (1947-09-01), Triplett
patent: 2706577 (1955-04-01), Wolf
patent: 2873411 (1959-02-01), Donaldson et al.
patent: 3726365 (1973-04-01), Russell
patent: 3773142 (1973-11-01), Bragg et al.
patent: 4244438 (1981-01-01), Willmann
patent: 4434977 (1984-03-01), Chiba et al.
patent: 4509475 (1985-04-01), Visek
patent: 4527710 (1985-07-01), Crevillen
General Motors Corporation
Halvosa George E. A.
Outland Robert J.
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