Apparatus and method of thermally detecting elevator machine brake
US6095289A · kind A · utility
12Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2121/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus and method are provided for detecting brake drag of an elevator machine brake (30). Temperature sensors (44) are disposed in close proximity to a pair of brake pads (35,36) and compared to ambient temperature to determine whether the brake pads are dragging on a rotating brake drum (37). A comparison circuit (47) is used to determine if the temperature of the brake pads has exceeded a predetermined threshold level (55) and to produce an output signal (52) corresponding to the position of the brake pads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.