Electronic scale with non-parallel capacitance means
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United States of America Patent
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Jun 25, 1985
Grant Date -
N/A
app pub date -
Aug 24, 1983
filing date -
Aug 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic scale device used for weighing an object or material. The device includes a platform arranged to move upon receipt of a material thereon. The device further includes variable capacitance means arranged to move upon receipt of a material thereon and comprising a first plate and a second plate with one of the plates being movable. Movement of the platform means upon receipt of the material thereon causes a displacement of the movable plate relative to the other plate to produce a signal indicative of the weight of the material being weighed. The displacement of the movable plate is achieved by having the movable plate rotate about a fixed axis of rotation. Moreover, the plates are disposed so as to be non-parallel to each other over the entire operational range of movement of the movable plate, whenever the plates are not abutting each other. In one embodiment of the invention, the distances between all points on one plate and their respective corresponding points on the other plate is proportional to the respective distances each of those points is from the axis of rotation, throughout the entire operational range of movement of the movable plate.
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