Dynamic pressure generator
US4499751A · kind A · utility
8Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1983 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Apr 1, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure generator for testing and calibrating pressure transducers has a body with an internal chamber. The chamber is filled with a liquid, statically pressurized. A piston is mounted in the chamber on a suspension member. A coil, mounted to move with the piston, is arranged in a magnetic field. The coil is supplied with varying current to cause the piston to oscillate or dither in the chamber. Such oscillation creates a dynamic pressure which is superimposed on the static pressure. Openings are provided in the body to receive the sensing end of one or more pressure transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.