Method for forming a seat in a pulsed sampling valve
US6355929B1 · kind B1 · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1998 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Oct 16, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K51/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for forming the seat in a pulsed sampling valve used in a FTICR MS. The valve has a ceramic ball that closes against the seat to thereby seal the passageway that is used for introduction of sample into the FTICR MS vacuum chamber. The material from which the seat is formed is chosen to withstand relatively high operating temperatures and a precise deburred hole is drilled in that material. The pre-load spring exerts a force against the ball when the valve is assembled. The force initially exceeds the yield strength of the seat material to deform the material to form the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.