Trailer
US6634701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2003 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B85/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A trailer including an inner frame that is made of metal, an outer shell that is made of a non-metal and that at least partially surrounds the inner frame, and at least one wheel rotatably secured to the inner frame. In a preferred embodiment, the outer shell is made of a plastic. The inner frame includes a lower frame portion with which the at least one wheel is rotatably secured, and an upper frame portion that supports at least a portion of the weight of the outer shell. Preferably, the upper frame portion includes a middle support member that extends upwardly from the lower frame portion, and a first bar assembly that is hingedly connected to the middle support member. In another embodiment, a second bar assembly is hingedly connected to the middle support member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.