Elevator brake

Patent metadata

Field	Value
Publication number	US-9688512-B2
Application number	US-201214434140-A
Country	US
Kind code	B2
Filing date	Nov 15, 2012
Priority date	Nov 15, 2012
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A brake ( 26 ) for an elevator system ( 10 ) and method of using the brake ( 26 ) is disclosed. The brake ( 26 ) may comprise first and second brake linings ( 38 ) configured to be frictionally engageable with a rail ( 14 ) of the elevator system ( 10 ), a first biasing member ( 34 ) configured to urge the first brake lining ( 38 ) to engage the rail ( 14 ), and a first actuator ( 30 ) configured to move the first brake lining ( 38 ) to disengage the rail ( 14 ) when the first actuator ( 30 ) is energized. The brake ( 26 ) may be configured to be mounted on an elevator car ( 16 ) of the elevator system ( 10 ).

First claim

What is claimed is:

1. A brake for an elevator system, the brake comprising:
a first brake lining configured to be frictionally engageable with a rail of the elevator system;
a second brake lining configured to be frictionally engageable with the rail;
a first biasing member configured to urge the first brake lining to engage the rail; and
a first actuator configured to move the first brake lining to disengage the rail when the first actuator is energized, wherein the brake is configured to be mounted on an elevator car of the elevator system;
wherein the first actuator further comprises a backing block, a first solenoid housed in the backing block, and an armature disposed between the solenoid and the first brake lining;
wherein an end of the armature is sloped toward the backing block.

2. The brake of claim 1 , wherein the first biasing member is a spring disposed in the first actuator.

3. The brake of claim 1 , wherein the first biasing member is a spring that is external to the first actuator.

4. The brake of claim 1 , further comprising a mount, wherein backing block is fixed to the mount and the first and second armatures are connected.

Assignees

• Otis Elevator Co

Inventors

• West Adrian D
• Billard Justin
• Terry Harold
• Piech Zbigniew
• Marvin Daryl J

Classifications

• B66B5/18 Primary

  and applying frictional retarding forces · CPC title

• F16D2121/22

  for releasing a normally applied brake · CPC title

• F16D2129/065

  Permanent magnets · CPC title

• F16D63/008

  Brakes acting on a linearly moving member · CPC title

• B66B11/0293

  Suspension locking or inhibiting means to avoid movement when car is stopped at a floor (locking car to building while loading to avoid movement B66B17/34) · CPC title