Importance

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Abstract

Platform weighing apparatus for measuring a load comprises a stationary base platform and a load supporting platform. A stabilizing system mounts the load supporting platform on the base platform for reciprocal movement relative thereto and constrains the platforms to be generally parallel throughout the range of such movement. Furthermore, the stabilizing system, while permitting vertical reciprocal movement between the platforms resists relative horizontal movement between them. This stabilizing system includes first and second stabilizing assemblies, each having at least two stabilizing arms which are linked for pivoted movement on one common pivot axis at one end to the base platform and which are also linked for pivoted movement on a second common pivot axis at the opposite end to the load supporting platform. The pivot axes are mutually parallel. A torsion resistant shaft rigidly interconnects the arms of each stabilizing assembly to hold them in coplanar relation with the pivot axes. The pivot axes of the first stabilizing assembly extend in a generally perpendicular relation to the pivot axes of the second stabilizing assembly. A single load cell is mounted between the base platform and the load supporting platform to measure relative vertical force therebetween as an indication of the weight of a load on the load supporting platform.

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First Claim