Safety brake apparatus for an elevator car or counterweight
US5495919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Apr 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety brake apparatus for a vehicle traveling in an elevator hoistway is provided, comprising a first link, a pair of second links, a connector rod, and an intermediate link. The first link is pivotly attached to a first side member of the vehicle. The connecting rod extends through the first and second side members, pivotly mounted within each side member. One of the second links is fixed to the connecting rod on the first side member side of the vehicle and the other second link is fixed to the connecting rod on the second side member side of the vehicle. The intermediate link is pivotly attached to both the first and second links on the first side member side of the counterweight. Each second link is connected to a safety brake. Actuating the first link causes the intermediate link to rotate the second links and therefore the connector rod, and causes the second links to actuate the respective safety brake.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.