Apparatus using resonance of a cavity to determine mass of a load
US7091427B2 · kind B2 · utility
2Cited by
25References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2003 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Aug 15, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2515/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A scale is provided, the scale including a cavity having a resonant frequency which is alterable with variations in mass of a load applied to the cavity. The scale also typically includes a comparator operatively coupled with the cavity to detect actual resonant frequency under the load, to compare such actual resonant frequency with a reference resonant frequency, and to produce a difference signal indicative of mass of the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.