Reversible freewheel device
US4693351A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Jun 23, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D41/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A freewheel device with freewheeling and locking effect in both directions of rotation can be produced easily and inexpensively by the use of conventional sprags designed for use in uni-directional freewheel devices. Two sets of sprags are provided between the inner and the outer raceway of the device, one for each direction of rotation. The sprags are spring loaded for taking positions in which they do not contact one raceway, and a cage which is braked during rotation is provided to be brought in rotation by the sprags and thereby influence the sprags against the spring force to taking a position in which they contact both raceways, the two sets of sprags being alternately engaged or disengaged depending on the direction or rotation of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.