Door knob spindle with spring
AssigneeBaldwin Hardware Corporation
InventorPhilip C. Ellis
Life of this patent
Estimating the term…
Abstract
A lock assembly with a lock spindle extending perpendicular from the internal lock mechanism and the door. A knob or lever is operably connected to the spindle such that rotation thereof operates the lock mechanism. In order to eliminate any movement between the spindle and knob or lever and thereby eliminate rattle or inoperative rotation of the knob, a bow spring is longitudinally mounted to the spindle. The ends of the spring are retained on the spindle as the spring bows radially outwardly from the spindle to frictionally engage an inner wall of the knob or lever.
Claims8
In a lock assembly having a locking mechanism disposed within a door, the locking mechanism including a cylindrical spindle extending therefrom to which an operating member is operably mounted, the improvement comprising:
- a biasing member mounted to the spindle and biasingly engaging the operating member, said biasing member including a bow spring mounted to the spindle and having a substantially curved configuration with ends of said bow spring in engagement with a slot in the spindle such that a vertex of said bow spring is disposed beyond an outer periphery of the spindle;
- and
- at least one lug formed on the spindle drivingly engaged by the operating member to translate rotation of the operating member to the spindle.
In a lock assembly having a locking mechanism disposed within a door, the locking mechanism including a cylindrical spindle extending therefrom to which an operating member is operably mounted, the improvement comprising:
- a detachable bow spring mounted within a longitudinal slot formed in the spindle, said bow spring having a pair of ends disposed within said slot of the spindle and a vertex disposed beyond an outer periphery of the spindle for biasingly engaging an interior surface of the operating member;
- and
- a pair of lugs formed on the spindle and drivingly engaged by the operating member such that rotation of the operating member translates through said lugs to the spindle to operate the locking mechanism.
Dependencies are inferred from the claim text.