Safety actuator apparatus for one-piece overhead garage door ope

Details Safety actuator apparatus for one-piece overhead garage door ope Safety actuator apparatus for one-piece overhead garage door ope

1991-03-11

1992-10-20

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Feeler moves into detecting contact with object

49 26, H01H 316, E05F 1502

Patent

active

051572303

ABSTRACT:
An electrically insulating base for mounting to the lower edge of a one-piece garage door and formed with an elongated, electrically conductive, inwardly protruding elliptical in cross section hollow symmetrical channel formed with an interior chamber. Mounted within the chamber is an elongated J-shaped strip contact extending longitudinally relative the channel and disposed below the center line thereof such that deflection interiorly of the wall of the channel will cause the wall to engage the strip contact.

REFERENCES:
patent: 1511055 (1924-10-01), Entwistle
patent: 2758836 (1956-08-01), Purdy
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patent: 3465476 (1969-09-01), Rayner et al.
patent: 4369344 (1983-01-01), Diamond
patent: 4371175 (1983-02-01), Van Dyk, Jr.
patent: 4684768 (1987-08-01), Sackmann et al.
patent: 4857668 (1989-08-01), Buonanno
patent: 4951985 (1990-08-01), Pong et al.
patent: 5023418 (1991-06-01), Beckhausen

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