Double-drive automatic sliding door operator

Details Double-drive automatic sliding door operator Double-drive automatic sliding door operator

1996-09-03

1998-01-27

Redman, Jerry

Movable or removable closures

Closures interconnected for concurrent movement

Opposed similar movement

49123, 49360, E05C 706

Patent

active

057111120

ABSTRACT:
An automatic sliding door operator includes a top door operator and a bottom door operator, each operator having a motor driven sprocket driving a tooth belt to which the sliding doors are attached, the motors being separately driven in a position-synchronized fashion in response to related encoders connected with each motor to provide positional information.

REFERENCES:
patent: 1904010 (1933-04-01), Peelle
patent: 3807091 (1974-04-01), Peelle et al.
patent: 3863390 (1975-02-01), Sawdai
patent: 4259810 (1981-04-01), West
patent: 4593793 (1986-06-01), Salmon
patent: 4781270 (1988-11-01), Holland
patent: 5063334 (1991-11-01), Tanita et al.
Fermator PCC4 data sheet (one page), Jun. 1996.

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