Vertically pivotal security gate

Details Vertically pivotal security gate Vertically pivotal security gate

1992-10-08

1993-11-23

Kannan, Philip C.

Movable or removable closures

Operator interrelated with closure latch release

Motor driven

49 49, 49302, 49340, 49385, E05F 1500

Patent

active

052632814

ABSTRACT:
A security gate system including a supporting structure and a gate mounted on the supporting structure for pivotal movement about a generally horizontal pivot axis between a closed position and an open position. A drive wheel is rotatably mounted on the supporting structure and is drivingly coupled to the gate so that rotation of the drive wheel in a gate opening direction drives the gate from the closed position to the open position. A first motor drives the drive wheel and a releasable lock releasably holds the drive wheel against rotation in the gate opening direction. A second motor moves a locking member of the releasable lock to a releasing position to allow the gate to be moved to the open position. The gate system may include two of the gates having operators sharing the same supporting structure.

REFERENCES:
patent: 1914359 (1933-06-01), Butts
patent: 4457105 (1984-07-01), Danin
patent: 4495730 (1985-01-01), Kennedy
patent: 4658543 (1987-04-01), Carr
patent: 4779379 (1988-10-01), Steen
patent: 4887205 (1989-12-01), Chou
patent: 4887393 (1989-12-01), Cysewski
patent: 4986031 (1991-01-01), Agnew et al.
"Welcome to Sun Power security gates".

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