Tarp enclosure for flat bed trailer and truck bodies
US4342480A · kind A · utility
Inventor
Key dates
| Filing date | Aug 26, 1980 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Aug 26, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60J7/062
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved, easy installation mechanized enclosure system for flatbed trailers and the like has anti-jamming roller bearing inclined ends on a succession of canopy-supporting arcuate members or roof-bows with rollers running in over-and-under tracks; the incline both increases the effective distance between rollers on each end of the arcuate members and loosens installation tolerances and immunizes against damage caused by misalignment of the tracks for the rollers by making it practically impossible for changes in spacing between the tracks to alter smooth operation of the rollers; other advantages of the system, some optional, include provisions for full-bed access for loading and unloading, both power and manual operation, integral lower-roller axles, roof bow tautening arm-braces, snapon/snap off installation of tarpaulin on roof bows, and spring-biased roller latches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.