Anti-skid device
US4800939A · kind A · utility
10Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Jul 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B39/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A chain-carrying pulley (1) is journalled on a shaft (3) fastened to an arm (4) pivotally connected to another arm (5) which in turn is rigidly fastened to the rear axle casing (6) of a vehicle. An inflatable bellows (7) extends between the arms. When inflated, for instance by pressurized air, the bellows displaces the movable arm (4) from a folded position relative to arm (5) bringing the pulley (1) into contact with the wheel. The pulley is returned to a storage position by springs (10) joined to the arms when the bellows is deflated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.