Method and apparatus for measuring the pressure of a fluid
US4491016A · kind A · utility
14Cited by
12References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1982 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Nov 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7339
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring a pressure, particularly the pressure of a fluid, employ a pressure-charged measuring piston movable in a cylinder and connected to a load or displacement measuring device. The piston is maintained floating or contact-free within the cylinder by hydrostatic or pneumatic fluid in the form of a release agent supplied between the piston and the cylinder under pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.