Elevator Disk Brake with Damping
AssigneeOtis Elevator Company
InventorRichard J. Ericson
Life of this patent
Estimating the term…
Abstract
An elevator brake assembly (16) includes a plate (26) having damper assemblies (28) including at least one spring (30) for controlling movement of the plate (26) relative to a magnetic field generator (20). A biasing member (36) forces the plate (26) into engagement with a disk (22) fixed to a rotating shaft (18). A force created by the magnetic field generator (20) overcomes force of the biasing member (32) to draw the plate (26) into contact with the magnetic field generator (20). The impact between the plate (26) and the magnetic field generator (20) is controlled by the damping assembly (28) to substantially reduce impact noise.
Claims20
An elevator brake assembly (16) comprising:
- a plate (26) movable between an engaged position and a disengaged position;
- a biasing member (36) biasing said plate (26) toward said engaged position;
- an actuator (20) for moving said plate (26) from said engaged position toward said disengaged position, and
- a damper assembly (28) comprising at least one metal spring (30) for controlling movement of said plate (26) toward said disengaged position.
An elevator system (10) comprising:
- an elevator car (12);
- a motor assembly (14) for moving said elevator car;
- and
- a braking system (16) comprising a disk (22) driven by said motor assembly (14), a plate (26) movable between engaged and disengaged positions by an actuator (20), a biasing member (36) biasing said plate (26) toward said engaged position, and at least one damper assembly (28) having at least one metal spring (30) for controlling movement of said plate (26) toward said disengaged position.
Dependencies are inferred from the claim text.