| US 7,506,904 B2 | ||
| Door handle lock assembly with automatic lock and retract | ||
| George M. Hall, Avalon, Tex. (US) | ||
| Assigned to Bell Helicopter Textron Inc., Hurst, Tex. (US) | ||
| Filed on Dec. 29, 2005, as Appl. No. 11/319,412. | ||
| Prior Publication US 2007/0170730 A1, Jul. 26, 2007 | ||
| Int. Cl. E05B 3/00 (2006.01) | ||
| U.S. Cl. 292—336.3 [292/DIG. 31; 244/129.4] | 22 Claims |
| 1. A door handle lock assembly, comprising:
a housing configured to be attached to a door;
an interconnecting member rotatably and axially movably supported by the housing;
a first handle fixed to the interconnecting member at a first end of the interconnecting member;
a second handle fixed to the interconnecting member at a second end of the interconnecting member, wherein the door is between
the second handle and the housing, the door handle lock assembly is changed from a locked condition to an unlocked condition
by axially moving the interconnecting member from a first position to a second position and then rotating the interconnecting
member, and the first and second handles axially move in unison during axial movement of the interconnecting member from the
first position to the second position, and
a lock member fixed to the interconnecting member between the first handle and the second handle, the lock member configured
to engage the housing to prevent rotation of the interconnecting member when the interconnecting member is in the first position
and to disengage from the housing when the interconnecting member is moved from the first position to the second position
to permit rotation of the interconnecting member.
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