Door knob construction
AssigneeBaldwin Hardware Corporation
InventorsLeslie A. Meck, Philip C. Ellis
Life of this patent
Estimating the term…
Abstract
A door knob construction featuring a machined knob and cover to incorporate decorative detail. The knob construction consists of a knob body, a shank threadably connected to the knob body and a cover which fits over the shank to complete the decorative knob assembly. The knob body is hollow to accommodate the lock cylinder and includes a small diameter hole through which the cylinder protrudes. The back of the knob body includes threads to accept the knob shank. Upon assembly, a bore is drilled across the threads and a pin is inserted to prevent disassembly of the knob body from the shank. The shank includes longitudinal ridges to form an interference fit with the decorative shank cover.
Claims16
A door knob construction for operable connection to a spindle of a lock mechanism mounted within a door, said door knob construction comprising:
- a knob body having a threaded opening to an interior chamber of said knob body;
- a shank threadably attached to said knob body, said shank including a head portion having threads for engaging said knob body and a neck portion having a longitudinal slot formed along least a portion of said neck portion to facilitate insertion of a lock cylinder within said knob body and shank;
- and
- a shank cover engaging said knob body and matingly mounted on said shank to conceal said shank.
A door knob construction for operable connection to a spindle of a lock mechanism mounted within a door, said door knob construction comprising:
- a knob body machined with decorative detail, an interior chamber and a threaded opening to said chamber;
- a shank threadably attached to said knob body, said shank having a substantially funnel-shaped configuration with a threaded head portion threadably engaging said knob body and a neck portion, said neck portion including at least one longitudinal ridge and a longitudinal slot formed along at least a portion of said neck portion to facilitate insertion of a lock cylinder within said knob body and shank;
- means for preventing threaded detachment of said knob body from said shank;
- and
- a shank cover engaging said knob body and matingly mounted on said shank to conceal said shank, said at least one longitudinal ridge forming an interference fit between said shank and shank cover.
Dependencies are inferred from the claim text.