Brake pipe pressure modulating valve device
US4842341A · kind A · utility
1Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T15/52
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A modulation valve device for governing pressure in a brake pipe has coaxial accelerating and releasing valves provided wherein accelerated application and release pistons are dovetailed together to reduce the size and the weight of the modulating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.