Emergency safety actuator for an elevator
AssigneeOtis Elevator Company
InventorsTadeusz Witczak, Daryl J. Marvin, Zbigniew Piech
Life of this patent
Estimating the term…
Abstract
A device for a friction force provider for an emergency safety actuator for an elevator is disclosed. The friction force provider may include a housing having a first end and an opposing second end, where the first end may define an opening. The friction force provider may further include a primary magnet positioned within the housing and configured to move between an armed position and a working position. The primary magnet may be configured to create a force on a rail of an elevator system in the working position and be held within the housing in the armed position.
Claims20
A friction force provider for an emergency safety actuator of an elevator, comprising:
- a housing having a first end and an opposing second end, the first end defining an opening;
- and
- a primary magnet positioned within the housing and configured to move between an armed position and a working position, the primary magnet configured to create a force on a rail of an elevator system in the working position, and the primary magnet being held within the housing in the armed position.
An elevator system, comprising:
- a hoistway;
- a car disposed within the hoistway;
- a counter weight disposed within the hoistway;
- a support structure operatively associated with the car and counter weight;
- a rail associated with the car;
- and
- an emergency safety actuator operatively associated with the car and rail and having a friction force provider configured to apply a force to the rail, the emergency safety actuator further having a triggering mechanism associated with the friction force provider to activate same.
A method of activating a magnetic friction force provider of an emergency safety actuator, comprising:
- retaining a primary magnet within a housing of the friction force provider in an armed position;
- releasing the primary magnet from the armed position by transmitting an electrical signal through an electro-magnetic coil of a triggering mechanism;
- extending the primary magnet from the armed position to a working position;
- and
- retaining the primary magnet in the working position.
Dependencies are inferred from the claim text.