Rack and pinion roller gate system for a livestock transportation vehicle, and method of operation thereof
US12144312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | May 25, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D33/042
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A roller gate system for a livestock transportation vehicle includes a rack and pinion gate movement system, with a roller gate assembly having toothed rollers connected by a rotatable roller shaft positioned in line with the center of gravity of the roller gate assembly when hanging substantially vertically. The pinion is a roller having a plurality of teeth, and the rack is a track having a plurality of openings for receiving the roller teeth. At each end of the rotatable roller shaft, the toothed roller is fixedly mounted thereto for travel along the track. The toothed rollers operate in unison to move the roller gate assembly in a uniform and smooth manner. By having the toothed rollers and the rotatable roller shaft positioned in line with the center of gravity of the roller gate assembly when hanging substantially vertically, the roller gate assembly remains in a substantially vertical orientation during travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.