| 摘要 |
<p>For use with a closure assembly a pivot shoe, the closure assembly having a closure member and a peripheral frame having disposed therewith a track or rail within which the closure member is movable. When the closure member is in a first position parallel to the track a first operating means is operable to engage at least a third detent of the shoe with at least a first engaging portion of the track or rail thus securing the shoe and the closure member in the track or rail, whereat when the closure member is moved past a predetermined angle a second operating means of the shoe is operated to engage at least a fourth detent of the shoe with at least a second engaging portion of the track.</p> |
