Rail vehicle for use in the collection and distribution of railroad crossties
US6170401A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | May 4, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B29/09
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railway maintenance vehicle exchanges worn crossties for new ones. Worn ties are collected and placed on an increased capacity storage car which permits ties to be placed atop the storage cars in a lateral orientation. New ties are simultaneously unloaded from the storage cars for distribution along the track. Tie transport and loading vehicles such as a gantry crane travel on rails atop the storage cars to move worn and new ties between a tie pick up car and a tie distribution car which has a tie ejector for laterally propelling ties fed to it on a queuing conveyor. The tie ejector has an endless drive chain with two striker plates attached at opposite ends and opposite sides such that they cannot interfere. The outward and downward trajectory of ejected ties is adjustable by a movable deflector shield. The tie ejector can be manually actuated by an operator while the maintenance vehicle is advanced, to drop ties next to the track at a predetermined and repeatable position relative to passing empty tie cribs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.