Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse motor controls for different motors
Patent
1979-08-14
1981-05-12
Weldon, Ulysses
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse motor controls for different motors
318 34, 318 53, 297 68, 297330, 307 38, H02P 154
Patent
active
042674905
ABSTRACT:
A switching control circuit for an electrically adjustable patient chair that utilizes a relay control circuit comprised of a plurality of switching control relays connected in a binary switching arrangement which in the preferred embodiment herein, permits the use of only three control relays to control six motor adjustment functions.
REFERENCES:
patent: 3147385 (1964-09-01), Burgis
patent: 3414324 (1968-12-01), Taylor et al.
patent: 4128797 (1978-12-01), Murata
SMR Corporation
Weldon Ulysses
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