Rail threading mechanism
US7765935B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Dec 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7697
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rail threading mechanism for a rail handling vehicle includes a thread box mounted on the outer end of a manipulating arm. The thread box includes a platform and a pair of jaws pivotally connected to the platform and moveable between open and closed positions. The platform includes a support roller for rollingly engaging the flat bottom of a rail. Each jaw include a plurality of jaw rollers positioned for rollingly engaging a rail positioned on the support roller when the respective jaw is in the closed position. The jaw rollers on each jaw preferably include a pair of base rollers positioned for engaging an edge of the base of the rail, a pair of flange top rollers positioned for engaging a top surface of the top flange of the rail, and a flange side roller positioned for engaging an edge surface of the top flange of the rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.