Lever handle controller
AssigneeSargent Manufacturing Company
InventorsDarren C. Eller, Richard Hai Huang, Thomas A. Pelletier
Life of this patent
Estimating the term…
Abstract
A free-wheeling lock mechanism for operating a door latch includes a body, a handle, a lock and a split shaft having two halves rotationally connected together along the shaft axis. One half of the shaft is connected to the handle and one half extends from the body to operate the door latch. The two halves of the shaft may be coupled and uncoupled via a shaft lock movable perpendicular between locked and unlocked positions. In the unlocked position the shaft lock connects the two halves of the shaft to rotate together when the handle is turned. In the locked position the shaft lock disengages the two halves of the shaft to rotate separately and allow the handle to free-wheel without operating the door latch.
Claims25
A free-wheeling lock mechanism for operating a door latch comprising:
- a body;
- a handle;
- a shaft mounted in the body, the shaft having first and second halves rotationally connected together along an axis of the shaft, the first half being rotated by the handle and the second half being adapted to operate the door latch;
- and a shaft lock movable between unlocked and locked positions, in the unlocked position the shaft lock connecting both the first and second halves of the shaft to rotate together when the handle is turned and in the locked position the shaft lock disengaging the first and second halves of the shaft to rotate separately and allow the handle to free-wheel, the shaft lock including a lock opening for receiving the shaft, the lock opening having a first portion for receiving the first half of the shaft and a second portion having a different cross sectional shape for receiving the second half of the shaft.
Dependencies are inferred from the claim text.