Patent ID: 6926319

Claim:
A rose locking mechanism for use in a lock assembly attached to a door comprising: a lock assembly comprising a chassis assembly having a slide linearly displaceable between retracted and extended positions and a rotatable member, the rotatable member being directly engageable with the slide such that rotation of the member displaces the slide between the retracted and extended positions, a latch assembly operably connected to the slide for retraction and extension of a bolt such that slide displaces the latch assembly to displace the bolt when the rotatable member displaces the slide, an inside handle operably connected to said chassis assembly, an outside handle operably connected to said chassis assembly, and an inside rose attached to said chassis assembly; and a push lock bar having an intermediate portion between a first and a second end, the intermediate portion being engageable with the rotatable member so as to prevent rotation of the outside handle, wherein said first end protrudes at least partially through said inside rose, wherein said intermediate portion is captured within said chassis assembly, and wherein said intermediate portion includes a first cam portion engageable by the slide such that when the slide moves from the extended position to the retracted position, the slide pushes the lock bar to displace axially so as to disengage the intermediate portion from the rotatable member, said axial motion of said push lock bar being perpendicular to a direction of said linear motion of said slide, and a second cam portion which enables linear motion along an axis of a door latch to be converted into axial motion of said push bar from a locked position when said push lock bar is depressed while the bolt is retracted.