Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent
1990-01-22
1991-07-30
Hepperle, Stephen M.
Pumps
Condition responsive control of pump drive motor
By control of electric or magnetic drive motor
417 18, F04B 4906
Patent
active
050355821
ABSTRACT:
A fluid governor including an electric motor for driving a fluid compressor and causing a build-up of pressure in a storage reservoir, pressure switch responsive to the pressure in the storage reservoir, electromagnetic solenoid valve connected to the pressure switch, a pneumatically operated electrical contact controller pneumatically connected to the magnetic solenoid valve for causing the pneumatically operated electrical contact controller to be connected to the storage reservoir when the pressure in the storage reservoir exceeds a first predetermined value to deenergize the electric motor and for causing the pneumatically operated electrical contact controller to be connected to atmosphere when the pressure in the storage reservoir drops to a second predetermined value to energize the electric motor.
REFERENCES:
patent: 2159781 (1939-05-01), Craig
patent: 2986617 (1961-05-01), Shirey
patent: 3089008 (1963-05-01), Shirey
patent: 3143969 (1964-08-01), Eames et al.
patent: 3502029 (1970-03-01), Halladay
patent: 3888603 (1975-06-01), Nagase
patent: 4026321 (1977-05-01), Kahoe et al.
patent: 4665938 (1987-05-01), Brown et al.
Carroll John B.
Hatzikazakis Michael V.
American Standard Inc.
Hepperle Stephen M.
Sotak J. B.
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