Calibration weight assembly for a gravimetric measuring device
US11231314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2019 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Sep 2, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G23/012
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration weight assembly (100, 200, 300, 400, 500) has at least one calibration weight (150, 550, 750) and a transfer mechanism, and is used with a gravimetric force-measuring device (110, 210, 310, 410, 510) having a fixed region (111, 211, 311, 411, 511), a load-receiving region (112, 212, 312, 412, 512), and a measuring sensor (140, 540). The transfer mechanism has at least one poly-stable positioning element (561, 571), a first stable state of which defines a calibration position (KP) and a second stable state of which defines a resting position (RP) of the transfer mechanism. The at least one calibration weight can be coupled with the load-receiving region. The transfer mechanism, as actuated by the measuring sensor, transfers the at least one calibration weight from the calibration position to the resting position, or vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.