Sash lock assembly for fenestration systems

A window assembly comprising:

• a window frame;
• an upper sash and a lower sash mounted within the window frame, wherein at least one of the upper or lower sash windows is slidable relative to the other within the window frame, and wherein one of the upper or lower sash windows includes a first keeper with a first catch mounted on a rail thereof and the other of the upper or lower sash windows includes a lock assembly mounted on a rail thereof, the lock assembly further comprising:
• a body having a cavity with a first opening formed at a first body surface and a second opening formed at an opposite second body surface, the body further including a second keeper with a second catch;
• an actuator including an arm and a shaft coupled to the body, the shaft extending through the cavity of the body, wherein a lower portion of the shaft protrudes from the second opening at the second body surface, and wherein the arm is manually actuatable to rotate the shaft within the cavity about a rotational axis;
• and
• a locking cam coupled to the lower portion of the shaft for continuous rotation therewith, wherein rotation of the shaft urges rotation of the locking cam, and wherein the locking cam mates with the first catch of the first keeper mounted on the rail of the upper or lower sash when the lock assembly is in the locked position, and wherein the locking cam is positioned underneath the second body surface of the body when the lock assembly is in the unlocked position.

A lock assembly comprising:

• a body having a cavity with a first opening formed at a first body surface and a second opening formed at an opposite second body surface, the body further including a keeper and a catch formed as integral components of the body;
• an actuator including an arm and a shaft coupled to the body, the shaft extending through the cavity of the body, wherein a lower portion of the shaft protrudes from the second opening at the second body surface, and wherein the arm is manually actuatable to rotate the shaft within the cavity about a rotational axis;
• and
• a locking cam coupled to the lower portion of the shaft for continuous rotation therewith, wherein rotation of the shaft urges rotation of the locking cam, and wherein a degree of the corresponding rotation of the locking cam is based on a position of the engagement member on the track such that the shaft is rotatable through a greater degree of rotational positions relative to the locking cam.