Electromagnetically compensating beam balance
AssigneeSartorius-Werke GmbH (und vorm. Gottinger Prazisionswaagenfabrik GmbH)
InventorsErich Knothe, Christoph Berg, Franz J. Melcher
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Abstract
An electromagnetically compensating beam balance has a balance housing, a am and a fixed counterweight. Weight changing means, which change the weighing range (scale) by substitution, are provided on the load receiving side. A parallel guidance system is provided. Rods which accept only horizontal forces are coupled between a load carrier and the housing. Vertical flexure elements, which accept vertical forces, are coupled between the beam and the load carrier.
Claims14
In an electromagnetically compensating beam balance having a balance housing, a beam, fixed counterweight means on the beam, electromagnetic force compensation means for fine compensation and a weight changing means on its load-receiving side for coarse compensation, the improvement comprising at least two rods connected to said housing;
- a load carrier connected on one side of said beam with said rods and forming a parallel guidance system therewith, said rods accepting substantially only primarily horizontal forces and being coupled to said balance housing, and vertical flexure elements connected to said housing and which accept primarily vertical forces and are coupled to said beam.
An electromagnetically compensating beam balance, comprising:
- a housing;
- a beam having a load receiving end and another end, said beam being suspended from said housing with a first articulated flexure element therebetween;
- means to counterweight said beam near the other end thereof;
- weight changing means suspended from the load receiving end of said beam for coarse compensation, with a second articulated flexure element therebetween;
- load carrying means at the load receiving end of said beam;
- and
- electromagnetic force compensation means for fine compensation located near an end of said beam, and connected thereto with parallel guidance means to accept primarily only horizontal forces, said means comprising a plurality of rods connected to said housing by third articulated flexure elements, said rods being connected by a fourth articulated flexure element to supporting means for said electro-magnetic force compensation means, the horizontal distance between the articulations of first and second flexure elements and between the articulations of said third and fourth flexure elements being equal.
Dependencies are inferred from the claim text.