Machine shed sliding door operator

Details Machine shed sliding door operator Machine shed sliding door operator

1990-04-23

1990-12-18

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

E05F 1134

Patent

active

049777041

ABSTRACT:
The present machine shed sliding door operator utilizes a gear and motor arrangement which rides back and forth with the machine shed sliding door when the sliding door is flopped back and forth against the shed by wind. The gear and motor arrangement slides in a stationary frame rigidly affixed in an upper corner of the door frame and continuously brings pressure to bear on a gear rack set in the door. A continuous meshing pressure on the gear rack by the gear arrangement is created by coil springs continuously pushing the gear arrangement against the gear rack.

REFERENCES:
patent: 1018442 (1912-02-01), Burgess
patent: 1057547 (1913-01-01), Heimer
patent: 1355874 (1920-10-01), Wheeler et al.
patent: 1917415 (1933-07-01), Woodruff
patent: 1997175 (1935-04-01), Gussack
patent: 3436863 (1969-04-01), Peelle, Jr. et al.
patent: 3996697 (1976-12-01), Bailey et al.
patent: 4409905 (1983-10-01), Zerbi
patent: 4541202 (1985-09-01), Dockery

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