Adjustable pressure regulator device
US4924904A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7808
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure regulator, of a type having a spring whose compressive force is a factor of the differential of pressure achieved as to the outlet pressure in comparison to the inlet pressure, and whose adjustment of spring pressure achieves a variation of the pressure differential, with the present concepts providing a screw-type camming feature for easily imposing whatever pre-load is desired on the spring to achieve the desired pressure differential of fluid being dispensed by the regulator. The casing is provided with a window through which a tool may be easily passed to give the rotational torque for this camming effect by which the pressure differential adjustment is achieved; and the camming effect provides axial spring-load adjustment by an easily applied rotational torque to an adjustment plate, or to the abutment plate which provides a relief valve function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.