Rear suspension system for a motor-tricycle
US4453616A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Apr 19, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B61/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rear suspension system for a motor-tricycle has a frame, a seat and a pair of rear wheels mounted on opposite ends of a rear axle. An integral engine unit includes an engine with a power train connected to the engine, for transmitting the output power of the engine to the rear axle. The rear end of the engine unit supports the rear axle. The engine unit and rear axle assembly is pivotally coupled to the frame via an elastic means, to enable the axle to swing up or down relatively to the frame. Thus, the deformation of the elastic means makes the frame slightly tiltable in the direction perpendicular to its longitudinal axis. A shifting of a rider's weight, while making a turn at a curve, is facilitated, since the frame is made tiltable relatively to the engine unit. Further, since an exhaust silencer or muffler is positioned between rear shock absorbers or cushion units, the safety is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.