Railroad tie service vehicle and method for spray application of a preservative
US4921732A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B31/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A railroad tie service vehicle includes a chassis system, a drive system and an application system. The chassis system includes front and back ends, opposite sides and a deck. The drive system includes an engine mounted on the chassis deck, front and back pairs of wheels and a pair of drive track assemblies mounted on the chassis front and back ends. The application system includes an actuating subassembly for selectively engaging railroad ties and a sprayer subassembly for spraying preservative on railroad ties in response to engagement by the actuating subassembly. A method of servicing railroad ties includes the steps of removing a rail from one side of a railroad track, exposing connection areas where the rail attaches to the railroad ties, driving a vehicle with preservative along the railroad track and applying preservative to the connection areas in response to engagement of the railroad tracks by an actuating subassembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.