Disk brake for elevator
US5101939A · kind A · utility
28Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1991 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Jun 7, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2121/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A caliper brake set engages a disk on the machine shaft or drive sheave to hold the elevator car in place at a landing. The brake set is biased by one or a pair of springs to a "brake-on" condition, and a solenoid assembly is provided to hold the brake set in a "brake off" condition when power is supplied to the solenoid. Camming levers are used in conjunction with the solenoid to provide a mechanical advantage which allows use of smaller solenoids. The brake shoes are spring biased for improved operation on the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.