Abstract: A dual function lock, a tilt latch assembly, and tilt latch for use on a hung or double hung window are provided. The lock includes a base, a handle, and a tilt latch actuating mechanism. The tilt latch assembly includes a lock, left and right latches, and an extensible member. The tilt latch actuating mechanism is adapted to receive the extensible member and has a null zone between locked and unlocked positions of the handle. In the null zone, no substantial movement of the extensible member as the handle is rotated from the locked to unlocked positions. The tilt latch actuating mechanism causes the extensible member to move in a direction toward the lock as the handle is rotated from the unlocked position to a tilt position.

Abstract: A dual function lock for use on a hung window is provided that includes a base, a handle and a tilt latch actuating mechanism. A tilt latch for use on a hung window is also provided. Furthermore, a tilt latch assembly including a lock, left and right latches and an extensible member is provided. Furthermore, a hung window and tilt latch assembly is provided.

Abstract: A dual function lock for use on a hung window is provided by the invention. The lock includes a base, a handle and a tilt latch actuating mechanism. A tilt latch for use on a hung window is also provided. Furthermore, a tilt latch assembly including a lock, left and right latches and an extensible member is provided. Furthermore, a hung window and tilt latch assembly is provided.

Abstract: A dual function lock for use on a hung window is provided by the invention. The lock includes a base, a handle and a tilt latch actuating mechanism. A tilt latch for use on a hung window is also provided. Furthermore, a tilt latch assembly including a lock, left and right latches and an extensible member is provided. Furthermore, a hung window and tilt latch assembly is provided.

Abstract: A corner lock (20) includes a first leg member (21) operatively connected to a second leg member (22). The leg members generally conform to a portion of the shape of the channel cavities of the sash members (11-14) which they are securing together. The leg members (21 and 22) each have threaded apertures (21g and 22g) formed for receiving fastening members (92 and 93). When the fastening members are tightened in the threaded apertures, the fastening members engage a first corner surface and move the leg members against the second corner surfaces, thereby tightening and securing the sash members together without the necessity of holes being formed in the sash members.