Suspension system for snowmobiles
US4284161A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1978 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Nov 24, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M2027/026
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A suspension system for a track driven vehicle such as a snowmobile, which has a vehicle body and a rigid frame, the suspension system pivotally interconnecting the body with the frame and comprising spaced front and rear support frames. The front support frame carries front torsion spring members having spring arms extending longitudinally along the rigid frame, each front torsion spring means having a spring arm engaging a cam surface on the rigid frame to vary the effective length of the torsion spring arm, the torsion spring arm being engageable with a cam edge of selected configuration to provide a desired progressive spring rate response to vertical displacement of the vehicle body with respect to the rigid frame. The rear support frame similarly includes torsion spring members each having spring arms for engagement with cam surfaces carried by the rigid frame to vary the effective length of the spring arm, the spring arm being engageable with a cam edge of selected configuration to provide a progressive spring rate during vertical displacement of the vehicle body with respect to the rigid frame. The rear support frame is pivotally connected to the rigid frame through side li…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.