Rotary window operator
AssigneeInterlock Industries Limited
InventorNigel Alan Colebrooke Taylor
Life of this patent
Estimating the term…
Abstract
A rotary window operator to effect opening and closing of a window. A rotatable handle (14) is mounted on a housing (10) from which a link member (16) projects. The handle (14) is pivotally coupled to a cage (29) in which a bush (30) is slidingly engaged. A cam surface (25) of handle (14) forces teeth on bush (30) to engage with teeth of cage (29) when the handle (14) is pivoted from a non-use position to an in-use position. A drive shaft coupled to the bush (30) has a gear which meshes with gear wheel (18) of link member whereby rotation of the handle (14), when in the in-use position, imparts movement in link member (16).
Claims30
A rotary window operator which includes a rotatable handle coupled by a drive coupling to a link member;
- the handle coupled to a mounting device, the handle adapted to be moveable into a non-use position where the drive coupling is disconnected;
- the drive coupling comprises a first drive member coupled with said handle and a second drive member coupled to a drive shaft, said first and second drive members being rotatable relative to one another, said first and second drive members each including a plurality of teeth which come into meshing engagement upon the handle being moved to an in-use position;
- said first drive member being formed by a cage to which the handle is pivotally coupled, said second drive member being formed by a bush located for axial movement within the cage, said teeth being formed on opposing surfaces of the bush and cage, said drive shaft extending through said cage and engaged within said bush.
A rotary window operator which includes a housing having a mounting surface which in use is engageable with an outer surface of a window frame, a rotatable handle, mounting means coupling the rotatable handle to said housing, a drive coupling which couples said rotatable handle to a link member which projects from said housing, a mounting frame which projects away from said mounting surface and is adjacent said link member, a first frame mounting means having at least one bore opening to said mounting surface and adapted to receive a fastener from within the window frame relative to said outer surface to apply a mounting force to draw said mounting surface of said housing into engagement with said outer surface of said window frame, and a second frame mounting means having at least one receiving means included with said mounting frame to receive a fastening means for coupling said mounting frame to said window frame internally of said window frame relative to said outer surface and in a direction which is not the same as said fastener which draws said mounting surface into engagement with said outer surface.
A rotary window operator which includes a housing, a rotatable handle coupled by a mounting device to the housing, the rotatable handle coupled by a drive coupling to a link member which projects from the housing, a mounting frame which projects from the housing adjacent the link member, the housing coupled by a first frame mounting device to a window frame;
- the mounting frame coupled by a second frame mounting device to said window frame, the first frame mounting device including a pocket in the mounting frame in which a clamping member is located in a first orientation which permits the mounting frame to be engaged through an opening formed in said window frame, said clamping member including an opening through which a fastener threaded into the housing is adapted to rotate from the first orientation to a second orientation where the clamping member engages part of the window frame.
Dependencies are inferred from the claim text.