Electronic mortise lock cylinder

Patent metadata

Field	Value
Publication number	US-12460448-B2
Application number	US-202418635846-A
Country	US
Kind code	B2
Filing date	Apr 15, 2024
Priority date	Apr 15, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A lock and method for locking including an electronic cylinder assembly that may be a direct replacement for a standard cylinder in a standard mortise type door lock housing. The cylinder assembly may include a first shaft rotatably mounted in the core and a second shaft rotatably mounted in the core and coaxial with the first shaft. A clutch is disposed on the first shaft and rotationally fixed to the first shaft but axially shiftable. The cylinder assembly also includes a slider with a finger, where the finger is engaged with the clutch, and a motor is configured to shift the slider axially between a first position and a second position. In the first position, the clutch is disengaged from the second shaft, and in the second position, the clutch is engaged with the second shaft, such that rotation of the first shaft causes rotation of the second shaft.

First claim

The invention claimed is:

1 . A cylinder assembly for a mortise lock having a bolt and latch, the cylinder assembly allowing for the opening of a door with less than one full rotation of a knob, the cylinder assembly comprising:
a cylinder; a shaft rotatably disposed within the cylinder; a first cam operatively coupled to the shaft; a second cam disposed on the first cam and rotationally adjustable relative to the first cam; and a locator associated with the first cam for selectively fixing a rotational position of the first cam relative to the second cam in angularly displaced relation.

2 . The cylinder assembly of claim 1 , further comprising a receiver associated with the second cam, the locator being engageable with the receiver to fix the rotational position of the second cam relative to the first cam.

3 . The cylinder assembly of claim 2 , the receiver and the locator including opposing ramped surfaces.

4 . The cylinder assembly of claim 2 , the first cam including a blocker, the second cam including a face, such that upon rotation of the first cam relative to the second cam, the blocker will engage the face and, upon further rotation, cause simultaneous rotation of the first cam and the second cam.

5 . The cylinder assembly of claim 1 , further comprising a knob operatively coupled to the shaft.

6 . The cylinder assembly of claim 5 , the cylinder including external threading for mounting in a mortise lock.

7 . A cylinder assembly for a mortise lock having a bolt and latch, the cylinder assembly allowing for the opening of a door with less than one full rotation of a knob, the cylinder assembly comprising:
a cylinder; a shaft rotatably disposed within the cylinder; a first cam operatively coupled to the shaft; a second cam disposed on the first cam and rotationally adjustable relative to the first cam; a locator associated with the first cam for locating a rotational position of the first cam relative to the second cam; a fastener with a head, the fastener affixed to the shaft for maintaining the first cam and second cam with the shaft; and a spring disposed between the head and the second cam for biasing the second cam against the first cam.

8 . The cylinder assembly of claim 7 , further comprising a knob operatively coupled to the shaft.

9 . The cylinder assembly of claim 8 , the cylinder including external threading for mounting in a mortise lock.

10 . A cylinder assembly for a mortise lock having a bolt and latch, the cylinder assembly allowing for the opening of a door with less than one full rotation of a knob, the cylinder assembly comprising:
a cylinder; a shaft rotatably disposed within the cylinder; a first cam operatively coupled to the shaft; a second cam disposed on the first cam and rotationally adjustable relative to the first cam; a locator associated with the first cam for locating a rotational position of the first cam relative to the second cam; a receiver associated with the second cam, the locator being engageable with the receiver to fix the rotational position of the second cam relative to the first cam; and a platform having a descending ramp, wherein when the second cam is disposed on the platform, the receiver is disengaged from the locator.

11 . The cylinder assembly of claim 10 , wherein platform is pivotable to accommodate rotation of the shaft, first cam, and second cam in either clockwise or counter clockwise direction.

12 . The cylinder assembly of claim 10 , further comprising a knob operatively coupled to the shaft.

13 . The cylinder assembly of claim 12 , the cylinder including external threading for mounting in a mortise lock.

Assignees

• Digilock Asia Ltd
• Security People Inc

Inventors

• Zhang An
• Gokcebay Asil

Classifications

• G07C9/00571

  operated by interacting with a central unit · CPC title

• E05B2047/0091

  Retrofittable electric locks, e.g. an electric module can be attached to an existing manual lock · CPC title

• E05B2047/0058

  by batteries · CPC title

• E05B2047/0026

  Clutches, couplings or braking arrangements · CPC title

• E05B2047/002

  Geared transmissions · CPC title