Collapsible vehicular trailer
US4822069A · kind A · utility
Inventor
Key dates
| Filing date | Mar 21, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Mar 21, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P3/127
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A collapsible vehicular trailer 10 using a standard towing dolly 1 as its wheel base. The collapsible vehicular trailer 10 is connected to a tow vehicle by a collapsible V-shaped trailer tongue 11. The collapsible trailer tongue 11 is connected to the tow vehicle by a hitch-ball coupler 15 and at its other end to a pair of base platforms 18 which detachably straddle the axles of towing dolly 1. Base platforms 18 each have a ramp retaining lip 20 located at their trailing edges for detachably engaging ramps 45. A pivot support platform 23 also straddles the two axles of towing dolly 1 and is centered between base platforms 18. Pivot support platform 23 provides a pivotal connecting point for the pivot frame 30 which has opposing wheel cradles 36 and 37 attached to the ends of main pivot frame members 31. The opposing wheel cradles 36 and 37 have a stop plate 41 and wheel retaining chain 39 for securely attaching a pair of wheels on the vehicle to be towed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.