Rail wheel grippers
US4030574A · kind A · utility
9Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1976 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Jan 7, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61K7/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rail wheel gripper for holding or retarding a rail vehicle has opposed gripper mechanisms that engage a wheel between them. Each mechanism comprises a carrier arm for a gripper member and upper and lower pivot arms connected to the carrier arm controlling the path of movement of the gripper member. Each mechanism is so arranged, and a drive device co-operates with it, as to exhibit a mechanical advantage with increased gripping force when the opposed gripper members reach their operative positions, and a mechanical disadvantage with magnified displacement of the members when they are remote from their operative position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.