Linear output force door operator

Details Linear output force door operator Linear output force door operator

1979-01-12

1980-11-04

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

E05F 1112

Patent

active

042311926

ABSTRACT:
A door operator including a unique electrical drive motor and a linkage arrangement having a drive bar applying driving action through a roller to a slide bar multiplying level wherein the multiplying lever is pivotally mounted at one end and slidably engaging a roller near the other end which is mounted on a slidable door.

REFERENCES:
patent: 965770 (1910-07-01), Voight
patent: 2807736 (1957-09-01), Jensen
patent: 3453778 (1969-07-01), Daugirdas

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