Pumps – Plural pumps with individual or relative control – Adjustment with respect to common drive
Patent
1977-04-15
1979-05-08
Croyle, Carlton R.
Pumps
Plural pumps with individual or relative control
Adjustment with respect to common drive
417533, F04B 2304
Patent
active
041533933
ABSTRACT:
A high pressure liquid pumping system having means for selecting multiple output pressures and capacities and comprising a motor with a pair of pumps operatively coupled thereto. Each pump is coupled to the motor by a separate coupling means, with one pump being normally drivably coupled to the motor, and with the second pump being intermittently coupled to the motor.
A first selector switch means engages the motor, while a second selector switch means is utilized to energize a clutch to couple the second pump to the motor when higher output pressures and capacities are desired.
REFERENCES:
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patent: 2853211 (1958-09-01), Chase
patent: 2968915 (1961-01-01), Feistel
patent: 3025965 (1962-03-01), Bergman et al.
patent: 3320895 (1967-05-01), Peterson et al.
patent: 3831849 (1974-08-01), Studinger
patent: 3951570 (1976-04-01), DeBiaggi
patent: 3970413 (1976-07-01), Duveau
patent: 3997114 (1976-12-01), Hewitt
patent: 4029443 (1977-06-01), Burnside et al.
Croyle Carlton R.
Haugen Orrin M.
Lear Siegler, Inc.
Look Edward
Nikolai Thomas J.
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