Pressure regulator utilizing pliable piston seal
US6505838B1 · kind B1 · utility
32Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | May 2, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D16/107
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure regulator uses a pliable seal to segregate a pressure confinement volume from the remaining cylinder volume. The pliable seal has a cross section comprising a pair of apexes that are disposed into grooves incorporated into the piston and the cylinder internal wall. The radii of the pliable seal establish a rolling contact to ensure pressure seal in the presence of seal deformation. The seal promotes linear regulator response and minimizes hysteresis causes by frictional forces of prior art piston rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.