Patent · US Active

Pot magnet for a moving coil arrangement in an electronic balance

US11131574B2 · kind B2 · utility

2Cited by

5References

8Claims

0Family size

Assignee

SARTORIUS LAB INSTRUMENTS GMBH & CO. KG · DE

Inventors

Lars Bornemann · Breitbrunn, DE
Michael D. Mueller · Poulsbo, US
Christian Schrader · Bodenfelde, DE
Friedrich Helmsen · Oettingen, DE
Jonas BODE · Uslar, DE
Tanja Mueck · Langelsheim, DE

Key dates

Filing date	Nov 4, 2019
Grant date	Sep 28, 2021
Priority date	—
Expiry date	Apr 20, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01G17/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A pot magnet (20) for a moving coil (10) of an electronic balance operating using the electromagnetic compensation principle includes: —a pot base (24) and a pot wall (22) rising vertically from the pot base, and —a permanent magnet structure (26) disposed within the pot wall and having an annular gap thereto, which structure has a permanent magnet body (261) arranged on the pot base side and a pole plate (262) connected to the surface thereof facing away from the pot base side. The pole plate is fixed by a rigid mechanical connection independent of the permanent magnet body to the pot base at a predetermined distance therefrom and the permanent magnet body is bonded to the pole plate on a surface facing the pot base without contacting the pot base.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.