Vehicle wheel positioning and steering apparatus
US10562364B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F11/046
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle wheel positioning and steering apparatus particularly useful for aerial work platforms comprises a support chassis and chassis support legs pivotally connected to the chassis. Steerable wheel assemblies are operably connected at ends of the support legs and powered actuators are operably connected to the chassis and legs for pivotally moving the legs and wheel assemblies relative to the chassis between transport and working positions. Variable length linear wheel steering actuators comprise one link of four bar parallelogram steering linkages between the chassis and wheel assemblies and the support legs each comprise second bars of the four bar parallelogram steering linkages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.