Appeal No. 2004-1114 Page 8
Application No. 10/079,706
rose received on an outer knob spindle sleeve which projects outwardly from the case,
and an outer thimble threaded onto the sleeve to retain the outer rose liner and rose
thereon whereby to provide a closure for the transverse opening in the door. Figure 1 is
a fragmentary plan view of a door lock assembly embodying the Hart's invention shown
assembled with a door, the door and portions of the lock assembly being shown in
horizontal section.
A cylindrical lock assembly 10 is mounted on a door 12 which has a transverse
cylindrical bore 14 therethrough. The lock assembly 10 comprises an operating unit 16
mounted in the bore 14 and a latch bolt unit 18 mounted in another bore which
intersects the bore 14 and opens through the edge of the door 12. The latch bolt unit
18 is releasably connected in a conventional manner to operating mechanism
associated with the operating unit for retraction in response to operation of either an
inner knob 19 or an outer knob 20. Locking mechanism (not fully shown) is provided to
selectively enable or disable the outer knob 20, so that the door may be locked to
prevent entry from the outer side, and includes inner locking mechanism operated by a
turn button 22 associated with the inner knob 19 and a conventional lock cylinder 24
mounted in the outer knob 20.
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Last modified: November 3, 2007