Molybdenum alloy elevator safety brakes
US6371261B1 · kind B1 · utility
22Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Sep 1, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2069/002
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An elevator safety brake for stopping an elevator car is provided with a brake shoe having a molybdenum alloy friction surface for contacting an elevator guide rail surface to provide a stopping force. The molybdenum alloy contains 99.4 weight percent molybdenum, 0.5 weight percent titanium and 0.1 weight percent zirconium. The friction surface of the brake formed from the alloy exhibits a consistent high friction and low wear suitably accommodating high speed, high load elevators installed in very tall buildings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.