Clutch controled load-securing strap tensioning system for trailer
US6742972B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 10, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Aug 10, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D45/001
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A strap winch device assembly for fitting on a flat bed open truck trailer, to enable a truck driver to remote actuate this load tightening system without leaving his truck cab, in periodic fashion. A number of these winch devices are connected to a single fore and aft drive shaft, which extends along the side of the trailer. The drive shaft is driven by a motor to tighten any straps that loosen when the trailer is in motion over the road, as trailer load distribution typically shifts during road trailer, due to road-induced vibrations. A clutch mechanism is provided in the winch device, to prevent the motor from overheating once a set tightening torque threshold level has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.