Patent ID: 6598346
Filing Date: 2003-07-29
Classification: E05C,E05D,E05Y,E06B

Abstract:
A device for turnable windows comprising:a frame having a first side face and a second side face, each of said side faces of said frame including a longitudinal groove; a casement having a first edge side face and a second edge side face, said casement being pivotally mounted within said frame by pivots positioned at mid-points of the casement and a link-arm mechanism extending between a respective said pivot and the frame, each of said first edge side face and said second edge side face including a first selectively retractable guide bushing and a second selectively retractable guide bushing, said first and second guide bushings of each said edge side face traveling in a respective one of said longitudinal grooves, and a rotatable lever which simultaneously extends or retracts one of said pair of first guide bushings and said pair of second guide bushings into or out of engagement with said respective longitudinal grooves; wherein said casement obtains an ajar position in said frame when one of said pair of first guide bushings and said pair of second guide bushings engage said respective longitudinal grooves; and wherein said casement may be pivoted from the ajar position in a reverse direction over half a turn and be closed in a reversed position by retraction of said one of said pair of first guide bushings and said pair of second guide bushings and then extension thereof into engagement with said respective longitudinal grooves.