Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Patent
1978-11-14
1980-12-23
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Motor protective condition responsive circuits
318783, 337113, 337327, 337380, 338316, 361 29, H02H 708
Patent
active
042413702
ABSTRACT:
A motor starting relay particularly adapted for use in starting single phase asynchronous motors comprises a resistor element of positive temperature coefficient of resistivity which is compactly arranged within a housing and engaged by electrical contact and terminals means of particular structure and of a material of relatively high thermal resistance in a novel way such that power dissipation or loss by the resistor is reduced to a very low level after it has performed its motor starting function but so that, at the same time, the resistor is adapted to cool more rapidly after interruption of motor operation to permit prompt motor restarting.
REFERENCES:
patent: 3568013 (1971-03-01), Blaha
patent: 3750082 (1973-07-01), Peterson et al.
patent: 3842188 (1974-10-01), Peterson et al.
patent: 3914727 (1975-10-01), Fabricius
patent: 3921117 (1975-11-01), Blaha
patent: 3925748 (1975-12-01), Slocum
patent: 3955170 (1976-05-01), Geishecker
patent: 3958208 (1976-05-01), Blaha
patent: 4084202 (1978-04-01), Stoll
De Filippis Pietro
Notaro Giuseppe
Salvatore Amedeo
Trama Luigi
Haug John A.
McAndrews James P.
Salce Patrick R.
Sharp Melvin
Texas Instruments Incorporated
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