Electronmagnetically operated free-wheel control device responsive to a brake control and to a high speed detecting means to provide a free-wheel override function
US4629041A · kind A · utility
Inventor
Key dates
| Filing date | May 14, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D45/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission with free-wheel capability comprises a bolt slidingly mounted in a bell-housing integral with a driving shaft, adapted for engagement in a cage provided with rollers and mounted in the bell-housing for movement between two positions in which the rollers and the bell-housing are in abutment so that a driving and a driven shaft are coupled to rotate together. The bolt maintains the cage in a middle position in which the driven shaft is disengaged and allowed to free-wheel, when the transmission is in forward travel and not in any braking condition. An electromagnet draws the bolt into the cage. This device ensures the free-wheel setting of the vehicle in forward travel up to a predetermined speed. At higher speeds a safety system automatically couples the driving and driven shafts together again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.