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US 11,536,053 B2Granted
Indicator lock
AssigneeSargent Manufacturing Company
InventorsPhillip Ashcroft, Brian R. Fournier, Lee Griswold, Christine Voelker
Life of this patent
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Abstract
Disclosed herein are cylindrical door locks configured to indicate the lock status of the door lock to nearby persons. In some instances, the lock status is indicated on a first side of the door. In other instances, the lock status is indicated on both a first side and a second side of the door.
Claims14
A cylindrical door lock comprising:
- an exterior handle including an indicator configured to display a locked status of the door lock;
- an interior handle including a lock;
- a locking bar aligned along a lock axis extending between the interior handle and the exterior handle, wherein the locking bar is coupled to the lock such that axial motion of the lock causes the locking bar to move axially;
- a locking piece configured to rotate about the locking bar and to move axially with the locking bar, wherein the locking piece includes a locking arm that extends radially from the lock axis;
- a first bar operatively coupled to the locking piece, the first bar being configured to engage the locking arm of the locking piece such that axial motion of the locking arm causes the first bar to move axially;
- and
- a second bar operatively coupled to the first bar, the second bar configured to engage the first bar such that axial motion of the first bar causes the second bar to move axially, and wherein the second bar is operatively coupled to the indicator in the exterior handle and wherein axial motion of the second bar causes the indicator to move.
4 more elements
A cylindrical door lock configured to display a lock status on an exterior handle, the cylindrical door lock comprising:
- an exterior handle having a first portion extending in a direction of a lock axis, wherein the first portion includes at least one opening that extends through a surface of the first portion;
- a first indicator disposed within the first portion and configured to display a status of the door lock through the at least one opening, wherein the first indicator is configured to move axially along the lock axis upon a change in the status;
- and
- a lock on an interior side of the door lock and operatively coupled to the first indicator, wherein the first indicator is configured to move axially upon motion of the lock.
1 more element
A cylindrical door lock comprising:
- an external handle having a housing disposed along a lock axis;
- at least one opening in a surface of the housing;
- an indicator disposed within the housing and configured to indicate a status of the door lock through the at least one opening, wherein the indicator is configured to move rotationally about the lock axis upon a change in the status;
- and
- a lock on an interior side of the door lock and operatively coupled to the indicator, wherein the indicator is configured to rotate about the lock axis upon axial motion of the lock.
2 more elements
Dependencies are inferred from the claim text.