Precision regulator
US6568418B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Feb 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7801
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The precision regulator connects to a high pressure fluid source and regulates the pressure to a downstream apparatus. If an overpressure occurs, it can be vented to atmosphere. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially and past these seal assemblies to achieve regulation and venting. The set point of the regulator can be adjusted by rotation of an adjustment knob that adjusts the position of the elongate control stem relative to the supply seal assembly and the vent seal assembly. Regulation is achieved primarily by use of a sensor piston which transfers fluid pressure from a regulated port to the sensor piston which is opposed by a spring.Both the supply seal assembly and the vent seal assembly rely upon an o-ring and a seal ring to achieve a seal with the outside circumference of the control stem. The o-ring is compressed and distorted, thus exerting forces against the seal ring to achieve a better seal. Both the supply seal assembly and the vent seal assembly are bi-directional and operate when forces are applied to the o-ring in different directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.