Solenoid valve seat and method of making same
US6240947A · kind A · utility
2Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0491
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved, air tight valve seat for a pneumatic brake system is achieved by using a plastic valve seat that is coined by the valve member. The valve member is a harder material, for example metal, than the thermo-plastic valve seat. The valve member is brought to an elevated temperature less than the melting point of the valve seat. The valve member engages the valve seat, coining the desired surface of the valve seat to conform it to the valve member. The heated valve member then remains in the valve assembly after coining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.