Patent · US Expired

Electromagnetic force-compensating precision weigher with dither

US4281731A · kind A · utility

3Cited by

2References

10Claims

0Family size

Assignee

Sartorius AG · DE

Inventors

Walter Sodler · Göttingen, DE
Dieter Blawert · Oettingen, DE
Jurgen Ober · Hardegsen, DE

Key dates

Filing date	May 8, 1980
Grant date	Aug 4, 1981
Priority date	—
Expiry date	May 8, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S177/11
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An electromagnetic force-compensating weigher with a load supporting device resiliently supported by resilient joints and movable between stops, wherein electric circuitry is connected to produce a slowly decaying mechanical oscillation upon the load supporting device, to thereby reduce the spring hysteresis of the resilient joints.

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