Tracking trailer construction
US4512593A · kind A · utility
Inventor
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D63/065
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A main frame is provided including front and rear end portions and the front end portion includes a pair of laterally spaced apart hitch structures for releasable hitching to a pair of complementary hitch portions carried by the rear of an associated towing vehicle. The rear end portion of the frame includes a pair of laterally spaced apart dependingly supported caster wheel assemblies which are each mounted from the frame for full 360.degree. angular displacement relative to the frame about an upstanding axis. Connecting structure interconnects the caster wheel assemblies together for equal and simultaneous angular displacement relative to the frame and friction brake structure is operatively connected between the frame and at least one of the caster wheel assemblies frictionally resisting angular displacement thereof relative to the frame. The friction brake structure is adjustable and the laterally spaced apart hitch structures are carried by a pair of opposite side forwardly projecting tongue portions each pivotally supported from the main frame of the trailer for limited angular displacement about a horizontal transverse axis. Further, spring structure is operatively connected…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.