Apparatus and method of determining the authenticity of weight obtained from a vibrating tray scale
US4856604A · kind A · utility
7Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Apr 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G13/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method of determining the authenticity of a signal indicative of the mass of an article being weighted. The article is placed upon the platform, and the platform is caused to oscillate and the period of harmonic motion is measured. One of or both the frequency of oscillation and amplitude of the transducer signal is monitored for purposes of determining authentication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.