Receptacles – Closures – Vent in closure
Patent
1989-05-05
1990-12-04
Pollard, Steven M.
Receptacles
Closures
Vent in closure
220202, B65D 5116
Patent
active
049747452
ABSTRACT:
A pressure equalizing element for an electrical device enclosure, e.g. for a control device under the hood of a vehicle, features a water-tight but air-transmitting region (6) which equalizes pressure between the interior airspace of the enclosure and ambient airspace. The element is preferably thimble-shaped so that all exterior surfaces are curved and water will not pool on it and clog the air pores. Thus, it will be operative, and can be installed, in any desired orientation. The thimble-shaped element preferably has a threaded (40) or dovetailed (4) rim which facilitates engagement with a correspondingly shaped aperture in the wall of the electrical device enclosure.
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Fry, "Water-Impervious Vent for Electrical and Similar Equipment", Research Disclosure, vol. 2244, No. 275, p. 149 (Mar. 1987, N.Y., N.Y.).
WPI Abstract of Losch & Kupec/Siemens, Disclosure DE-OS No. 3017874=BR8102830=EP39869.
Pollard Steven M.
Robert & Bosch GmbH
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