Patent ID: 7685773
Filing Date: 2010-03-30
Classification: E06B

Abstract:
1. A sliding window assembly comprising a main support frame including upper and lower elongated horizontal main frame members and elongated vertical main frame members of rigid material and adapted to be installed within an opening of a building structure, at least one sash frame including upper and lower elongated horizontal sash frame members and elongated vertical sash frame members of rigid material and supported for sliding movement within said main support frame between an open position and a closed position, a glass window panel mounted within said sash frame, parallel spaced sash frame members and the corresponding adjacent parallel spaced said main frame members including interlocking members having hook portions, said hook portions of said interlocking members engage in response to deflection of said sash frame by a substantial windload against said window panel and said sash frame in said closed position to limit deflection of said sash frame, each of said interlocking members on said parallel spaced main frame members comprising a longitudinally extending metal reinforcing member having a base flange rigidly secured to a corresponding one of said main frame members, and a longitudinally extending cap member of plastics material mounted on each said metal reinforcing member and having at least one longitudinally extending and laterally projecting lip forming a corresponding one of said hook portions.