Electrical and vacuum switching control apparatus for automotive air control system
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United States of America Patent
Stats
-
Dec 10, 1996
Grant Date -
N/A
app pub date -
Feb 15, 1994
filing date -
Feb 15, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus, which controls the operation and speed of an electrical blower motor and the operation of a vacuum operated recirculation control device, comprises a vacuum switch combined with an electrical switch having a rotary shaft and fixed and movable contacts whereby rotation of the shaft controls the operation and speed of the blower motor. The shaft is pushable rearwardly and is spring-biased forwardly for operating the vacuum switch whereby vacuum is selectively supplied to the recirculation control device for switching between outside air and recirculation of air. A push-push latching mechanism is provided for alternately latching the vacuum switch in one position and releasing the vacuum switch for return movement to its other position.
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