Weighing sensor and electronic balance having photoelectric position sensor with integrated stop structure
US11366006B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 30, 2018 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Mar 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G7/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A weighing sensor is provided for an electronic balance. A weighing unit of the weighing sensor has a load-receiving portion, a fixing portion, and parallel guiding members that connect the load-receiving and fixing portions A lever, with a first end connected to the load-receiving portion, is located between the parallel guiding members and the fixing portion. A lower portion of a photoelectric position limiting block is connected to the fixing portion, and an upper portion thereof has a limiting structure. A tail end portion of a second end of the lever is disposed in the limiting structure, limiting its deviation. The photoelectric position limiting block has a photoelectric position sensor and a stop structure for limiting deviation of the tail end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.