Railroad switch stand
US4938438A · kind A · utility
6Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jan 9, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L5/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railroad switch stand for moving switch points between a pair of stock rails having a worm and gear drive connection between an operator driven input shaft and an output shaft connected to the switch points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.