Transmission having a vacuum ventilation control

Details Transmission having a vacuum ventilation control Transmission having a vacuum ventilation control

1983-08-15

1984-08-14

Lazarus, Ira S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 1R, F02B 7700, F16K 2406

Patent

active

044650302

ABSTRACT:
A transmission includes a housing having the interior thereof connected for fluid communication with a vacuum source, such as an engine manifold. A check valve and regulator valve are disposed between the transmission housing and the vacuum source. The check valve prevents fluid flow from the vacuum source to the transmission while the regulator valve limits the maximum vacuum that can be drawn in the transmission housing. The normal transmission fill tube opening has installed therein a filter for restricting fluid flow to the interior of the housing or a cap for preventing fluid flow through the fill tube during normal operation.

REFERENCES:
patent: 2782773 (1957-02-01), Stone
patent: 4192186 (1980-03-01), Quinn

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