| 摘要 |
A latch mechanism adapted for being coupled to a window sash, which travels within a window frame, is disclosed which includes a main housing having a sidewall including one or more sidewall sections. The sidewall including one or more sidewall sections extends around at least a portion of the housing and defines an interior space and includes an opening in said sidewall at one end of said housing. The sidewall further defines a channel within the interior space of the main housing, which has an end that coincides with said opening. At least one of the sidewall sections which is substantially parallel to the direction of travel of the bolt is adapted to extend down from the top of the top rail of the window sash along at least a portion of the external surface of a corresponding one of the front facing and the back facing of the top rail. The latch mechanism further includes a bolt, which is substantially located within said housing and travels along said channel. The bolt has a first end which is adapted for extending through the opening of said housing and extending into the side jamb of the window frame. The latch mechanism still further includes a tension device coupled to the bolt and the main housing for biasing the bolt toward a position where the bolt extends at least partially through the opening.
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