Tag axle assembly for work vehicle
US4705133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1987 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jan 23, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2400/61
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An add-on wheel/axle assembly for truck-type vehicles for reducing the effective axle load of the vehicle allowing the carrying of greater payloads without violating governmentally imposed road restrictions. The assembly includes a hydraulically actuatable articulated arm assembly where one end of a first arm link is pivotally joined to opposed sides of the truck frame proximate its rear end and with wheels mounted on stub axles affixed to the other ends of said arm assemblies. A cross-member offset by a predetermined distance from the stub axles joins the arm assemblies together and a hydraulic cylinder is operatively coupled between the truck frame and the articulated arms for extending and retracting the wheels between a ground-engaging disposition and an elevated disposition. Tie bars and associated bell cranks also cooperate with the articulated arms to draw the wheels in a straddling disposition relative to the truck frame when the wheels are in their elevated disposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.