Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to thermal conditions
Patent
1974-09-06
1977-04-12
Rubinson, Gene Z.
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to thermal conditions
318481, 318484, 361 27, H02H 504
Patent
active
040177785
ABSTRACT:
A motor protection circuit includes a capacitance and resistance timing circuit together with temperature sensing facilities which are energized upon motor startup to terminate operation of a motor in the event of insufficient oil pressure or excessive heat. An oil pressure sensing switch is connected to the timing circuit to prevent its operation so long as sufficient oil pressure is sensed.
REFERENCES:
patent: 3262014 (1966-07-01), Conner
patent: 3721880 (1973-03-01), Neill
patent: 3742302 (1973-06-01), Neill
patent: 3742303 (1973-06-01), Dageford
patent: 3753043 (1973-08-01), Plouffe
patent: 3864611 (1975-02-01), Chang
GE SCR Manual, 1964, pp. 78 & 79.
Feldhaus John J.
Robertshaw Controls Company
Rubinson Gene Z.
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