Method and a support arrangement in a roller vehicle to be steered by a roller mat
US5009278A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D11/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and a support arrangement to steer a roller vehicle by a roller mat, which vehicle has an essentially rigid body part supporting the frame and the power engine with transmission means thereof to transmit power to a curved form turnable roller mat, whereby one side of the roller mat is shortened and the other side thereof is correspondingly lengthened. According to the invention, when the roller mat is being turned to a curved form the vehicle is tilted and its center of gravity is transferred to the side of the tilt in regard to the longitudinal axis of the vehicle. The support arrangement extends essentially the whole length of the body part, is suspended to the body part and comprises a separate, twistable, i.e. bendable or foldable, auxiliary body part supported to the support arrangement at two points on the center line of the vehicle, to which body the roller wheel assembly of the roller mat has been suspended nontransferably in regard to the auxiliary body, and which body is provided with means connected to the steering devices of the vehicle to twist the auxiliary body and thus to steer the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.