Rotary line transfer switch

Details Rotary line transfer switch Rotary line transfer switch

1981-08-17

1983-02-01

Weldon, Ulysses

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

200153LA, 318440, G05B 500

Patent

active

043718205

ABSTRACT:
An improvement in oscillatory line transfer switches of the type having mechanical drive between a drive motor and the shafts of two such switches plus a manual mechanical switch to supplement the drive motor and having a third shaft mechanically connected into the same drive which controls a neutral position. An oscillatory switch system is used to switch from utility power sources to emergency power sources when the normal line supply is temporarily not available. This condition is sensed, an emergency generator activated, and, when the latter is up to needed voltage, the line transfer switches are thrown. After normal line voltage is restored, the switches oscillate back to normal power sources. A gear train causes at least two switches to turn simultaneously.

REFERENCES:
patent: 2783394 (1957-02-01), Struthers
patent: 2861198 (1958-11-01), Soos
patent: 3198908 (1965-08-01), Staak
patent: 3584172 (1971-06-01), Owen
patent: 3796937 (1974-03-01), Loffler et al.

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