Abstract: A linear operator for a sliding door includes a body; a first wheel rotatably attached to the body at a first position on the body; an arm movably attached to the body, translatable in a direction parallel or substantially parallel to a longitudinal axis of the body, and fixable to the body at a desired translation position; a second wheel rotatably attached to the arm at a second position on the arm; and a conveyor extending between the first wheel and the second wheel, movable about the first wheel and the second wheel, and operable for attachment to a door, wherein when the arm is at a desired translation position, a distance between the first position and the second position corresponds to a desired movement distance of the door when the door is attached to the conveyor.

Abstract: A linear operator for a sliding door includes a body; a first wheel rotatably attached to the body at a first position on the body; an arm movably attached to the body, translatable in a direction parallel or substantially parallel to a longitudinal axis of the body, and fixable to the body at a desired translation position; a second wheel rotatably attached to the arm at a second position on the arm; and a conveyor extending between the first wheel and the second wheel, movable about the first wheel and the second wheel, and operable for attachment to a door, wherein when the arm is at a desired translation position, a distance between the first position and the second position corresponds to a desired movement distance of the door when the door is attached to the conveyor.

Abstract: An elevator car door control system includes a clutch and an interlock assembly. The clutch may include a stationary base and a slidable base movably attached to the stationary base. The stationary base may be adapted for attachment to a car door of an elevator car. The interlock assembly may include a locking arm operatively connected to the slidable base of the clutch and moveable from a locked position preventing translation relative to the elevator car to an unlocked position. When the car door is in a closed position, a door opening sequence may commence causing the slidable base to move relative to the car door, but the car door will only open if the slidable base presses against an object, such as a roller on a hoistway door, in which case the locking arm of the interlock assembly moves from the locked to the unlocked position.

Abstract: A method for replacing parts of an elevator door assembly including installing a hanger mount in an opening of the elevator door hanger, positioning a roller assembly on one side of the elevator door hanger, the roller assembly being configured to receive an engaging member, positioning a leveling cam on another side of the elevator door hanger, the leveling cam configured for sliding contact with a bearing surface of the hanger mount and having a first surface, a second surface, an opening between the first surface and the second surface, and a third surface for contacting the bearing surface, and inserting the engaging member through an opening of the hanger mount and the opening of the leveling cam, and securing the engaging member within the roller assembly.

Abstract: An elevator door subsystem including a hanger mount, a leveling cam, an engaging member, and a roller assembly, configured such that when the roller assembly is positioned on one side of the elevator door hanger, the hanger mount is positioned within an opening of the elevator door hanger, and the leveling cam is positioned on another side of the elevator door hanger, the engaging member is receivable by the roller assembly after the engaging member is passed through an opening in the leveling cam, an opening in the hanger mount, and the opening in the door hanger.

Abstract: In an embodiment, a door detection system may include a transmitter, a receiver, a reflector, and one or more processors. The transmitter positioned on an elevator car door transmits a signal towards a reflector on a hoistway door and the reflector reflects the signal towards the receiver when the hoistway door is properly positioned with respect to the elevator door. The one or more processors determine whether the hoistway door is properly positioned with respect to the elevator car door based on the reflected signal received by the receiver. If the hoistway door is not properly positioned, the elevator car is prevented from moving. If the hoistway door is properly positioned, the elevator car is free to move.

Abstract: In one embodiment, a braking apparatus includes a pair of brake shoes, a cam follower connected to at least one of the shoes, a compressible spring connected to the cam follower, and an actuation assembly including a motor, a ball screw and an electromagnetic clutch. The braking apparatus is operative to transition from a brake applied position where the brake shoes are closed and a brake release position where the brake shoes are separated. When the braking apparatus is in the brake release position, a brake application may be commenced to close the shoes by power no longer being supplied to the electromagnetic clutch. Additionally, when the braking apparatus is undergoing a brake release cycle to separate the brake shoes, the brake application cycle may also be commenced prior to completion of the brake release cycle when power is no longer supplied to the electromagnetic clutch and the motor.

Abstract: In an embodiment, a door detection system may include a transmitter, a receiver, a reflector, and one or more processors. The transmitter positioned on an elevator car door transmits a signal towards a reflector on a hoistway door and the reflector reflects the signal towards the receiver when the hoistway door is properly positioned with respect to the elevator door. The one or more processors determine whether the hoistway door is properly positioned with respect to the elevator car door based on the reflected signal received by the receiver. If the hoistway door is not properly positioned, the elevator car is prevented from moving. If the hoistway door is properly positioned, the elevator car is free to move.

Abstract: In one embodiment, a braking apparatus includes a pair of brake shoes, a cam follower connected to at least one of the shoes, a compressible spring connected to the cam follower, and an actuation assembly including a motor, a ball screw and an electromagnetic clutch. The braking apparatus is operative to transition from a brake applied position where the brake shoes are closed and a brake release position where the brake shoes are separated. When the braking apparatus is in the brake release position, a brake application may be commenced to close the shoes by power no longer being supplied to the electromagnetic clutch. Additionally, when the braking apparatus is undergoing a brake release cycle to separate the brake shoes, the brake application cycle may also be commenced prior to completion of the brake release cycle when power is no longer supplied to the electromagnetic clutch and the motor.

Abstract: The disclosure provides for a locking system for an elevator car door that includes a locking apparatus mounted to the elevator car door. The locking apparatus includes an elevator door latch arm, a sensing vane, and a fixed vane. The elevator door latch arm has one end configured to be inserted into a catch to lock the elevator car door. The sensing and fixed vanes are generally parallel to one another. When the elevator car door is aligned with a hoistway door, an outer surface of the sensing vane is configured to engage with a roller on the hoistway door, and an outer surface of the fixed vane is configured to engage with another roller on the hoistway door. When both the first and second rollers are engaged by the sensing and fixed vanes, the locking apparatus is configured to remove the elevator door latch arm from the catch.