Dustproof and airtight luminaires

Details Dustproof and airtight luminaires Dustproof and airtight luminaires

1975-08-08

1977-01-04

Peters, Jr., Joseph F.

Buckles, buttons, clasps, etc.

240 4155, 277 343, F21S 110

Patent

active

040015726

ABSTRACT:
A luminaire provided with an inflatable gasket for airtight and dustproof sealing of its interior and for simultaneously gripping the cover of the luminaire in closed position while the gasket is inflated. The sealing forces act in a plane which is essentially perpendicular to the plane of symmetry of the cover. Untight closure of the cover is signaled by the visible displacement of the cover in case of deflation of the gasket.

REFERENCES:
patent: 1622437 (1927-03-01), Freund
patent: 3092336 (1963-06-01), Harling et al.
patent: 3297865 (1967-01-01), Baldwin
patent: 3854040 (1974-12-01), Heiderer

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