Multicell articulated riser system for a self propelled aerial work platform
US5355970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F11/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An articulated riser system for aerial access equipment wherein a parallelogram linkage is provided by a support frame, a riser frame assembly, and a pair of substantially parallel arms pivotally connected at each end to the support frame and riser frame assembly. The parallel arms are positioned one above the other and the lower arm is provided with a multicell cross-sectional configuration larger than the tubular cross-sectional configuration of the upper arm so that heavier loads can be supported by aerial access equipment than if both parallel arms had the same cross-sectional configuration. A trough is provided in the upper surface of the lower arm so that the upper arm is nested therein when the parallelogram linkage is in its fully lowered and fully raised positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.