Dual arm operator for a casement-type window

Details Dual arm operator for a casement-type window Dual arm operator for a casement-type window

1979-06-08

1980-12-30

Kannan, Philip C.

Movable or removable closures

Mounted for multidirectional or oblique movement

Swings on plural axes; e.g., pivotal link arms

49342, E05F 1124

Patent

active

042415411

ABSTRACT:
An operator for a casement-type window having an openable sash mounted adjacent one edge thereof for combined pivoting and linear movement of said sash edge relative to a window frame. The operator includes a first operator arm rotatable about a fixed axis and having an end adapted for movable engagement with the sash at a distance from said one edge of the sash to impart a rotational force to the sash, a second operator arm and a connecting link pivotally connected between said second operator arm and the sash adjacent said edge, and said second operator arm being pivotally mounted on the first operator arm, with there being intermeshing drive gears fixed one to each of said arms, with one gear being a drive gear and the other gear being a driven gear. Rotation imparted to the drive gear causes rotation of the first operator arm and bodily movement and rotation of the second operator arm with the latter arm exerting a force on the connecting link acting in a direction generally parallel to the path of linear movement of the sash edge.

REFERENCES:
patent: 2674452 (1954-04-01), Hummert
patent: 3032330 (1962-05-01), Stavenau
patent: 3085299 (1963-04-01), Reynaud
patent: 3438151 (1969-04-01), Evers et al.
patent: 3838537 (1974-10-01), Stavenau et al.

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