| 摘要 |
<p>A lock for securing a window sash against a window frame, including a housing mountable on a face of the window frame, and a handle extending generally longitudinally between first and second ends and pivotable in the housing about an axis disposed substantially halfway betwee n the handle ends and oriented substantially transverse to the handle longitudinal direction. The handle includes a pivot at each handle end, and a pivot link is pivotably securable on one end to a window locking mechanism and pivotably securable on its other end to a selected one of the handle pivots. The housing has a substantially planar first face which is substantially the entire surface of the handle visible in the housing openin g when the handle is in the first position and is substantially co-planar with the housing first face when the handle is in the first position. A slide is selectively movable into a recess in one of the handle ends to block pivotin g ofthe handle. Manual movement of the handle from the f irst position to the second position may be initiated by pushing the actuator first face at one end.</p> |
