Pumps – Condition responsive control of pump drive motor – With control of pump drive transmission
Patent
1977-12-14
1980-05-27
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
With control of pump drive transmission
417 53, F04B 4906, F04B 4900
Patent
active
042048095
ABSTRACT:
An apparatus is provided for delivering a substance to a desired point and includes a delivery means responsive to n independent controls for delivering the substance to the desired point at a particular delivery rate, with n being equal to an integer greater than 1. An input signal is provided indicative of the desired delivery rate and means are provided for taking the n th root of the input signal and simultaneously communicating the resultant signal to each of the independent controls, whereby wide range control of the delivery means is effected.
REFERENCES:
patent: 2774436 (1956-12-01), Ferris
patent: 3003309 (1961-10-01), Bowers et al.
patent: 3600563 (1971-08-01), Porter
patent: 3605775 (1971-11-01), Zaander et al.
patent: 3927528 (1975-12-01), van der Kolk
patent: 3937597 (1976-02-01), Bacquie et al.
patent: 4026321 (1977-05-01), Kahoe
patent: 4074955 (1978-02-01), Nonnemacher et al.
Freeh William L.
General Signal Corporation
Mednick Jeffrey S.
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