Reversible door interlock for elevators
AssigneeCommercial and Residential Elevator Supply LLC
InventorJoseph D. Burns
Life of this patent
Estimating the term…
Abstract
An example door interlock includes a baseplate and a keeper removably and pivotally attached to the baseplate. The keeper includes a bore and a grooved opening, where the grooved opening is configured to connect to an arm, the arm connecting a door to the door interlock. The door interlock further includes an actuator including a cylinder. The actuator is configured to insert or retract the cylinder into or out of the bore, respectively, based on a positioning of an elevator, thereby causing the keeper to move between a locked configuration and an unlocked configuration, and causing the door to either be openable when the keeper is in the unlocked position or unopenable when the keeper is in the locked position.
Claims20
A door interlock, comprising:
- a baseplate;
- a keeper removably and pivotally attached to the baseplate, the keeper comprising a bore and a grooved opening, the grooved opening configured to connect to an arm, the arm connecting a door to the door interlock;
- an actuator comprising a cylinder, the actuator configured to insert or retract the cylinder into or out of the bore, respectively, based on a positioning of an elevator, thereby causing the keeper to move between a locked configuration and an unlocked configuration, and causing the door to either be openable when the keeper is in the unlocked position or unopenable when the keeper is in the locked position;
- a first switch attached to the baseplate, the first switch configured to contact the cylinder and transmit information regarding a position of the cylinder to a controller;
- and
- a second switch attached to the baseplate, the second switch configured to contact the keeper and transmit information regarding a position of the keeper to the controller.
A door interlock, comprising:
- a baseplate;
- a keeper removably and pivotally attached to the baseplate, the keeper comprising a bore and a grooved opening, the grooved opening configured to connect to an arm, the arm connecting a door to the door interlock;
- an actuator comprising a cylinder, the actuator configured to insert or retract the cylinder into or out of the bore, respectively, based on a positioning of an elevator, thereby causing the keeper to move between a locked configuration and an unlocked configuration, and causing the door to either be openable when the keeper is in the unlocked position or unopenable when the keeper is in the locked position;
- and
- a stop attached to the baseplate, wherein the stop is configured to limit rotation of the keeper based on interaction with an arcuate slot of the keeper.
A locking apparatus for an elevator door, the locking apparatus configured to move between a locked configuration to prevent opening of the elevator door and an unlocked configuration to allow opening of the elevator door, and wherein the locking apparatus is reversible between a first orientation operable with a left-hand door swing and a second orientation operable with a right-hand door swing, wherein the locking apparatus comprises:
- a baseplate;
- a keeper removably and pivotally attached to the baseplate, the keeper comprising a bore and a grooved opening;
- an actuator comprising a cylinder, the actuator configured to:
- insert the cylinder into the bore based on a first positioning of an elevator, thereby causing the locking apparatus to be in the locked configuration;
- and
- retract the cylinder out of the bore based on a second positioning of the elevator, thereby causing the locking apparatus to change to the unlocked configuration;
- a first switch attached to the baseplate, the first switch configured to contact the cylinder and transmit information regarding a position of the cylinder to a controller;
- and
- a second switch attached to the baseplate, the second switch configured to contact the keeper and transmit information regarding a position of the keeper to the controller.
Dependencies are inferred from the claim text.