Weighing scales – Self-positioning – Electrical current generating or modifying
Patent
1989-12-11
1991-02-19
Miller, Jr., George H.
Weighing scales
Self-positioning
Electrical current generating or modifying
177229, 7386265, G01G 314, G01G 308, G01L 122
Patent
active
049935062
ABSTRACT:
This invention relates to an accurate load cell for use in mass-produced weighing devices, particularly in low-profile scales incorporating a plurality of load cells. The load cell is made from one flat piece of metal, possibly a single metal stamping, consisting of three structural elements: (1) A flat flexure beam, possibly with a narrow mid-section, on which strain sensors are bonded; (2) A flat U-shaped loaded element attached at its inner mid-section to one end of the flexure beam, with the two leading edges of the U-shaped loading element reaching beyond the mid-point of the middle beam; and (3) A flat mounting element attached at its mid-section to the other end of the flexure beam. The mounting element can also be U-shaped, with the two leading edges of the U-shaped mounting element reaching beyond the mid-point of the middle beam on the outside of the U-shaped loading element.
REFERENCES:
patent: 4289036 (1981-09-01), Barker
patent: 4548086 (1985-10-01), Kastel
patent: 4848493 (1989-07-01), Hitchrock
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