Electrically calibrated air gauging apparatus
US4125011A · kind A · utility
6Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1978 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Jan 30, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrically calibrated air gauging apparatus for measuring or comparing dimensions is disclosed. The apparatus is calibrated with only electrical adjustments and does not require the difficult pneumatic adjustments associated with prior devices. A monolithic, semiconductor pressure transducer is employed to sense the air pressure in the probe line. The apparatus includes a linear mode which provides an extended range of display readings proportional to the deviation of an unknown dimension from a known dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.