Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Patent
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
Daugiras Kristupas
Elguindy Samir M.
Downey Kenneth
Lidd Francis J.
Vapor Corporation
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