Claims
- 1. An anti-rotation device for a sash lock, the sash lock having a housing and an actuator arm connected to a cam, the actuator arm rotatable between a locked position and an unlocked position, the device comprising:
a body adapted to be attached to the housing, the body having a means for selectively preventing rotation of the actuator arm from the locked position to the unlocked position.
- 2. The device of claim 1 wherein the means for selectively preventing rotation is a tab adapted to confront the actuator arm to retain the actuator in its locked position.
- 3. The device of claim 2 wherein the tab further comprises a thumb button.
- 4. The device of claim 2 wherein the tab has an engagement surface adapted to abut the actuator arm.
- 5. The device of claim 4 wherein the tab has an engagement position wherein the tab abuts the actuator arm.
- 6. The device of claim 5 wherein the tab has a deflected position wherein the actuator arm can rotate from the locked position to the unlocked position.
- 7. The device of claim 6 wherein the tab has an inclined surface.
- 8. The device of claim 7 wherein the actuator arm slides along the inclined surface when moving from the unlocked position to the locked position wherein the tab moves to the deflected position.
- 9. The device of claim 8 wherein the tab moves to the engagement position after the actuator arm moves past the tab.
- 10. An anti rotation device for a sash lock, the sash lock having a housing and an actuator arm rotatable between a locked position and an unlocked position, the device comprising:
a body, the body having a base adapted to be attached to the housing, the body further having a tab, the tab having a surface adapted to selectively engage the actuator arm to prevent rotation of the actuator arm from the locked position to the unlocked position.
- 11. The device of claim 10 wherein the tab has a thumb button extending therefrom.
- 12. The device of claim 10 wherein the body has at least one aperture adapted to receive a fastener capable of fastening the tab to the housing.
- 13. The device of claim 10 wherein the tab has an engagement surface adapted to abut the actuator arm.
- 14. The device of claim 13 wherein the tab has an engagement position wherein the tab abuts the actuator arm.
- 15. The device of claim 14 wherein the tab has a deflected position wherein the actuator arm can rotate from the locked position to the unlocked position.
- 16. The device of claim 15 wherein the tab has an inclined surface.
- 17. The device of claim 16 wherein the actuator arm slides along the inclined surface when moving from the unlocked position to the locked position wherein the tab moves to the deflected position.
- 18. The device of claim 17 where in the tab moves to the engagement position after the actuator arm moves past the tab.
- 19. A sash lock for a sash window assembly, the sash window assembly including an upper sash window and a lower sash window, each of the sash windows mounted within opposed guide rails on a master frame, wherein at least one of the sash windows is slidable within the frame relative to the other sash window, the sash lock comprising:
a keeper adapted for mounting on one of the sash windows, the keeper including a keeper surface; and a locking assembly adapted for mounting on the other of the sash windows, the locking assembly comprising:
a cam supported by the other of the sash windows, the cam having a cam surface for engaging the keeper surface; an actuator arm rotatable between an unlocked position and a locked position; the actuator arm operably connected to the cam; and means for preventing rotation of the actuator arm from the locked position to the unlocked position.
- 20. The sash lock of claim 19 wherein the locking assembly further comprises:
a housing having an aperture; and a shaft extending through the aperture and coupling the actuator arm to the cam such that the actuator arm and cam are rotatably supported by the housing.
- 21. The sash lock of claim 19 wherein the means for preventing rotation of the actuator comprises a body mounted to the housing, the body having a tab wherein the tab confronts the actuator arm to retain the actuator in its locked position.
- 22. The sash lock of claim 21 wherein the tab has a deflected position to allow rotation of the actuator arm to the unlocked position.
- 23. The sash lock of claim 21 wherein the tab is integrally formed with the housing.
- 24. The sash lock of claim 21 wherein the tab has a thumb button extending therefrom.
- 25. The device of claim 21 wherein the tab has an engagement surface adapted to abut the actuator arm.
- 26. The device of claim 21 wherein the tab has an engagement position wherein the tab abuts the actuator arm.
- 27. The device of claim 26 wherein the tab has a deflected position wherein the actuator arm can rotate from the locked position to the unlocked position.
- 28. The device of claim 27 wherein the tab has an inclined surface.
- 29. The device of claim 28 wherein the actuator arm slides along the inclined surface when moving from the unlocked position to the locked position wherein the tab moves to the deflected position.
- 30. The device of claim 29 where in the tab moves to the engagement position after the actuator arm moves past the tab.
RELATED APPLICATIONS
[0001] This application claims the benefit of application Ser. No. 60/352,701 which is expressly incorporated by reference herein and made a part hereof.
Provisional Applications (1)
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Number |
Date |
Country |
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60352701 |
Jan 2002 |
US |