Safety drive circuit for pump motor

Details Safety drive circuit for pump motor Safety drive circuit for pump motor

1990-06-26

1991-12-31

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

Single motor control element responsive to means sensing...

417 45, F04B 4902

Patent

active

050767615

ABSTRACT:
A DC motor drive system for mechanically linking to a reciprocable pump, having safety circuits for disconnecting power from the system upon detection of excessive line voltage variations, excessive line current variations, excessive pressure demands, and electrical and mechanical faults which may occur in system operation.

REFERENCES:
patent: 3953777 (1976-04-01), McKee
patent: 4024864 (1977-05-01), Davies et al.
patent: 4108574 (1978-08-01), Bartley
patent: 4221543 (1980-09-01), Cosentino et al.
patent: 4397610 (1983-09-01), Krohn
patent: 4795314 (1989-01-01), Prybella et al.
patent: 4986919 (1991-01-01), Allington
patent: 4990057 (1991-02-01), Rollins

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