Sealed chambers

Details Sealed chambers Sealed chambers

1987-11-10

1989-01-31

Lazarus, Ira S.

Illumination

Vehicle steering mechanism or element moves pivoted lamp or...

Tie rod element controlled

362 96, 362294, 362267, 116 59, F21V 3100

Patent

active

048020680

ABSTRACT:
The invention relates to chambers which are sealed against ingress of water and are provided with an element through which air may permeate to equalize pressures of air inside and outside the chamber. The element is of a foamed silicone and has a cellular fine pored layer of predominantly open cells having a skin to be contacted by air outside the chamber. Examples of chambers described and claimed are a vehicle horn and a vehicle headlight.

REFERENCES:
patent: 4157426 (1979-06-01), Hatanaka et al.
patent: 4264743 (1981-04-01), Mazuyama et al.
patent: 4299921 (1981-11-01), Youssef
patent: 4569007 (1986-02-01), Dick

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