초록 ▼

A pivotable window sash assembly includes a pivot bar which engages a balance shoe for holding the sash to a master frame. The shoe has a recess in which a locking member is rotatably mounted. The locking member includes an exposed keyway which is selectively aligned with at least one slot in the sh

A pivotable window sash assembly includes a pivot bar which engages a balance shoe for holding the sash to a master frame. The shoe has a recess in which a locking member is rotatably mounted. The locking member includes an exposed keyway which is selectively aligned with at least one slot in the shoe located at the recess. The pivot bar has an arm which functions as a key for fitting in the keyway and has at least one projection extending outwardly from the arm for fitting in each slot when the slot and keyway are aligned.

대표청구항 ▼

[ What is claimed is:] [1.] A pivotable window sash assembly in combination with a tilt window sash and a channeled window frame mounting said tilt window sash to said channeled window frame, said window frame having an elongated channel functioning as a track, a balance shoe slidably mounted in sai

[ What is claimed is:] [1.] A pivotable window sash assembly in combination with a tilt window sash and a channeled window frame mounting said tilt window sash to said channeled window frame, said window frame having an elongated channel functioning as a track, a balance shoe slidably mounted in said channel for movement therein, a pivot bar mounted to said window sash, said pivot bar being pivotally engaged with said balance shoe to connect said window sash with said balance shoe for joint movement of said window sash and said balance shoe and for selective pivotal movement of said window sash with respect to said balance shoe and said window frame, said balance shoe having a recess, a locking member rotatably mounted in said recess, said locking member having a keyway on a surface of said balance shoe disposed toward said pivot bar, at least one slot in said balance shoe located at said recess for being selectively aligned with said keyway, said pivot bar having a body portion which fits in said window sash, said body portion having a channel shaped end extending outwardly toward said balance shoe, said end comprising a key shaped to fit in said keyway, and said end having a projection extending outwardly therefrom to fit in said slot only when said slot and said keyway are aligned.