Method and apparatus for determining weight and mass
US4050530A · kind A · utility
14Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | May 14, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus is disclosed for measuring weighing and/or mass of an object. The object to be measured is subjected to an input frequency signal supplied to a piezoelectric crystal. Another piezoelectric crystal supporting the object is caused to vibrate in response to the input frequency signal and the mass and/or weight of the supported object. This second vibrating piezoelectric crystal will then produce a frequency output signal, whose amplitude is a function of the mass (and/or weight) of the object being measured. The frequency of the input and the output signals are substantially the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.