Weighing machine with dummy load cell for error correction
US4593778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Jun 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G23/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention of this application relates to a weighing machine in which a weighing member such as a weighing saucer or hopper holding or accommodating the materials to be weighed is provided on one side of a load cell through a support, and the load cell is supported on the other side thereof on a frame directly or indirectly through an elastic body for absorbing vibrations. The weighing machine is basically constructed so that the load cell is supported on the other side thereof on the frame through a strain generator for allowing damping in the fixed direction and, at the same time, through an anti-vibration damper for improving a damping characteristic, whereby vibrations of the load cell is damped promptly. Further, a dummy cell having the same natural frequency as the load cell is associated with the load cell and then supported on the frame in a similar manner, to remove a vibration signal from the base out of a detection signal from the load cell, thereby making it possible to carry out detection of weight accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.