Window operator

Details Window operator Window operator

E - Fixed Constructions

06

B

E06B 3/32 (2006.01) E05F 11/16 (2006.01)

Patent

CA 2177895

An operator for controlling the movement of a window sash relative to a frame with a raised surface along a frame sill thereof, wherein the operator includes a base having a first support surface, an aperture and a bottom exterior surface with a slot therein, the base attached to the frame with the raised surface fitting substantially within the slot. The operator alsoincludes a cover secured to the base and having a second support surface with a hole therethrough defining an internal shoulder, the second support surface mating with the first support surface. A post extends from the cover and through the aperture in the base when the operator is assembled. An arm is pivotally secured to the post and attachable to the sash to control the movement of the sash between open and closed positions. A worm driveably engages the arm and has a worm shaft and a worm shoulder disposed on the worm shaft. The worm is directly supported by the first and second surfaces at one end and the worm shoulder engages the internal shoulder as the worm shaft protruding from the hole. Also a method for manufacturing the operator includes the steps of passing the worm shaft through the hole with the worm shoulder engaging the internal shoulder and the worm disposed against the first support surface, fitting the arm to central post, the arm in driveable engagement with the worm, placing the base and the cover together with the worm disposed between the first and second support surfaces and the central post and the plurality of fastener posts protruding through the plurality of apertures, forming the central post, controlling the time and force applied in the central post forming step to eliminate the axial play along the central post, and securing the plurality of fastener posts.

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