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US 4,281,731 AGranted
Electromagnetic force-compensating precision weigher with dither
AssigneeSartorius AG
InventorsWalter Sodler, Dieter Blawert, Jurgen Ober
Life of this patent
Estimating the term…
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.
Claims10
An electromagnetic force-compensating precision weigher, comprising:
- a load picking-up device supported by means of metallic resilient joints and vertically movable between stops;
- and
- electric means connected with the load picking-up device imposing a slowly dying-out mechanical oscillation upon the load picking-up device and reducing the spring hysteresis of the resilient joints.
Dependencies are inferred from the claim text.