Boat trailer
US4519738A · kind A · utility
Inventor
Key dates
| Filing date | Mar 28, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Mar 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P3/1033
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A boat trailer including a frame having a tongue rigidly connected thereto and an axle with wheels thereon connected to the frame by springs, the frame also having pivotally connected thereto a ramp mounted on the rearward end of the frame on an axis perpendicular to the longitudinal axis of the tongue of the trailer, the ramp being mounted independently of the wheels supporting the frame, the ramp having the major portion of its length extending forwardly of the perpendicular axis of the frame and a plurality of rollers mounted in the center thereof, and having two flat runners extending parallel and perpendicular to the pivotal axis of the ramp for supporting the weight of the boat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.