Pumps – Condition responsive control of pump drive motor – With condition responsive control of pump fluid valve
Patent
1990-08-24
1992-06-30
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
With condition responsive control of pump fluid valve
417 44, F04B 4908
Patent
active
051258005
ABSTRACT:
A vehicle compressor unit having an adjustable outlet pressure at which it will be de-activated. A compressor is operated by an electric motor from the vehicle's electrical supply. A pressure release valve detects the pressure from the outlet of the compressor, the valve being spring loaded and the force on the spring being adjustable to vary and pre-set the pressure which the valve releases. An enclosure into which air releases when the valve releases. Electrical contact means movable by the release of air into the enclosure to de-activate the motor at that pre-selected pressure.
REFERENCES:
patent: 4080105 (1978-03-01), Connell
patent: 4476889 (1984-10-01), Haynes et al.
patent: 4776766 (1988-10-01), Brent
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