Transit vehicle shunt determination
US4387870A · kind A · utility
6Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Apr 29, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2200/26
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle signal shunt detection apparatus responds to a first signal to establish the presence of a vehicle including a shunt circuit and then responds to a second signal to establish that the shunt circuit is operating to provide a desired predetermined vehicle signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.