Patent ID: 7448164

Claim:
An upper sash assembly for a double-hung window, the upper sash assembly comprises: an upper sash frame for a double-hung window, wherein the upper sash frame comprises a bottom rail, a pair of side rails and a top rail joined at their respective ends to hold a sheet of glass therebetween, wherein the top rail has a first planar upper surface thereon; and a separate upper sash lock housing attached to the first planar upper surface of the top rail of the upper sash frame, the upper sash lock housing comprises: a lock housing frame defining a channel, the lock housing frame having a first side, a second side, and a bottom surface, wherein the bottom surface is attached to the first planar upper surface of the top rail of the upper sash frame; a lock imbedded in the channel of the lock housing frame, the lock laterally projecting past each side rail of the upper sash frame; a first strip of weatherstrip attached to the first side of the lock housing frame; and a second strip of weatherstrip attached to the second side of the lock housing frame.