Sabbath elevator
OwnerSagie Harelinventor
Life of this patent
Estimating the term…
Abstract
A method of operating an elevator, the elevator having an elevator car, a motor, a controller and a counterweight (CW), the method including, for ascending of the elevator car when loaded with passengers, providing a car occupancy limiter (COL) and activating the COL by the controller for ensuring that the loaded car weighs less than the CW and controlling by the controller of the motor to not use motor rotational power; and for descending of the elevator car when loaded with passengers, where the loaded car weighs more than the CW, controlling by the controller of the motor to not use motor rotational power.
Claims19
A method of operating an elevator, the elevator comprising an elevator car, a motor, a controller and a counterweight (CW), the method comprising:
- for ascending of the elevator car when loaded with passengers, providing a car occupancy limiter (COL), activating the COL by the controller for limiting occupancy of the elevator car such that the loaded car weighs less than the CW, and controlling by the controller of the motor to not use motor rotational power, wherein gravitational pull on the CW causes the elevator car to ascend.
An elevator comprising:
- an elevator car;
- a counterweight (CW);
- a car occupancy limiter (COL) for limiting occupancy of the elevator car such that the loaded car weighs less than the CW;
- and
- a controller controlling operation of the elevator configured such that:
- for ascending of the elevator car when loaded with passengers, activating the COL and not using motor rotational power or limiting the motor rotational speed so as to limit the motor rotational power, wherein gravitational pull on the CW causes or assists the elevator car to ascend.
A method of operating a Sabbath elevator on the Sabbath, the Sabbath elevator comprising an elevator car, a motor, a controller, and a counterweight (CW), the method comprising:
- for ascending of the elevator car when loaded with passengers, providing and activating by the controller of a car occupancy limiter (COL) for limiting occupancy of the elevator car such that the loaded car weighs less than the CW and, by the controller, limiting the motor rotational speed so as to limit the motor rotational power.
Dependencies are inferred from the claim text.