| 摘要 |
PCT No. PCT/NZ94/00150 Sec. 371 Date Jun. 21, 1996 Sec. 102(e) Date Jun. 21, 1996 PCT Filed Dec. 21, 1994 PCT Pub. No. WO95/18284 PCT Pub. Date Jul. 6, 1995A 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).
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