Electronic gate control

Details Electronic gate control Electronic gate control

1980-09-16

1982-12-14

Weldon, Ulysses

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318266, 318466, 318468, G05B 500

Patent

active

043640036

ABSTRACT:
A logic control and safety circuit for an electrically actuated gate, or the like. Upon command, a counter directs pulses from a free running oscillator of selective frequency to timer and motor control circuitry, effecting sequential gate operations. The normal gate sequence includes open, pause, and close cycles. Electro-mechanical and electrical safety features are included should the gate encounter an obstruction during either the open or the close cycles, or fail to complete a cycle for any reason. Automatic reset circuitry advances the gate through a "close" cycle following a power failure.

REFERENCES:
patent: 4035702 (1977-07-01), Pettersen et al.
patent: 4119896 (1978-10-01), Estes et al.
patent: 4234833 (1980-11-01), Barrett
patent: 4263536 (1981-04-01), Lee et al.

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