Rear wheel suspension system for straddle carriers
US4155570A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1977 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Jun 15, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D53/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To simplify, lighten and reduce the cost of the rear wheel suspension on straddle carriers while increasing the operational efficiency of the suspension, a longitudinal walking beam is swingably mounted at its center on a transverse axis trunnion secured to a sturdy depending box beam on the straddle carrier frame. Rear wheel axle assemblies for pairs of tandem rear wheels are carried by the forward and rear ends of the walking beam. Shock struts are interconnected between the forward and rear ends of the walking beam and sturdy holders on the interior of the depending box beam in upwardly converging relationship for efficient operation. The shock struts can be hydraulic, air operated or mechanical with coil springs and cables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.