Failsafe electric locking lever trim
First Claim
Patent Images
1. An electrically lockable door lever assembly for controlling a door latch assembly, the door lever assembly comprising:
- a trim housing configured to present a plate;
a lever handle rotatably connected to the trim housing;
a cam operably connected to the lever handle and positioned to rotate in response to rotation of the lever handle;
a slider movable in response to rotation of the cam, with movement of the slider controlling operation of the door latch assembly; and
a block arm assembly attached to the trim housing, the block arm assembly comprising a block arm and an attached block head, with the block head selectively positionable by rotation of the block arm in a locked position between the slider and the plate to prevent movement of the slider and its connected door latch assembly, the block head being, moved to a locked position by electrical activation of a solenoid assembly connected between the trim housing and the block arm, and mechanically biased to return to an unlocked position by deactivation of the solenoid assembly.
6 Assignments
0 Petitions
Accused Products
Abstract
A door lever assembly for disengaging an unlocked latch of a lockable door latch assembly includes a lever handle rotatably connected to a trim housing and a cam operably connected to the lever handle. The cam is positioned to rotate in response to rotation of the lever handle, converting its rotational movement to linear movement of a movable slider positioned adjacent to the cam. An electrically activated block arm is positionable to prevent movement of the movable slider, effectively locking the door lever assembly.
-
Citations
12 Claims
-
1. An electrically lockable door lever assembly for controlling a door latch assembly, the door lever assembly comprising:
-
a trim housing configured to present a plate; a lever handle rotatably connected to the trim housing; a cam operably connected to the lever handle and positioned to rotate in response to rotation of the lever handle; a slider movable in response to rotation of the cam, with movement of the slider controlling operation of the door latch assembly; and a block arm assembly attached to the trim housing, the block arm assembly comprising a block arm and an attached block head, with the block head selectively positionable by rotation of the block arm in a locked position between the slider and the plate to prevent movement of the slider and its connected door latch assembly, the block head being, moved to a locked position by electrical activation of a solenoid assembly connected between the trim housing and the block arm, and mechanically biased to return to an unlocked position by deactivation of the solenoid assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An electrically lockable door lever assembly for controlling a door latch assembly, the door lever assembly comprising:
-
a trim housing configured to present a plate; a lever handle rotatably connected to the trim housing; a cam operably connected to the lever handle and positioned to rotate in response to rotation of the lever handle; a slider movable in response to rotation of the cam, with movement of the slider controlling operation of the door latch assembly; and a block arm assembly attached to the trim housing and having a block head selectively positionable in a locked position between the slider and the plate to prevent movement of the slider and its connected door latch assembly, the block head being moved to a locked position by electrical activation of a solenoid assembly, and mechanically biased to return to an unlocked position by deactivation of the solenoid assembly. - View Dependent Claims (9, 10, 11)
-
-
12. An electrically lockable door lever assembly for controlling a door latch assembly, the door lever assembly having a trim housing that supports a plate, the door lever assembly comprising:
-
a lever handle rotatably connected to the trim housing; a slider connected to move in response to rotation of the lever handle, with movement of the slider controlling operation of the door latch assembly; and a block arm assembly comprising a block arm and an attached block head, with the block head selectively positionable by rotation of the block arm in a locked position between the slider and the plate to prevent movement of the slider and its connected door latch assembly, the block head being moved to a locked position by electrical activation of a solenoid assembly connected between the trim housing and the block arm, and mechanically biased to return to an unlocked position by deactivation of the solenoid assembly.
-
Specification