Electronic balance

Details Electronic balance Electronic balance

2007-02-13

2007-02-13

Gibson, Randy W. (Department: 2841)

Weighing scales

With testing

C177S145000, C073S001130

Reexamination Certificate

active

10856827

ABSTRACT:
An electronic balance includes a sample plate for placing a sample, a load detecting unit for determining a weight of the sample, a sensitivity calibration mechanism having a calibration weight disposed under the sample plate for applying a load of the calibration weight to the load detecting unit, a weight holding member with a spring property for holding the calibration weight when the load of the calibration weight is not applied to the load detecting unit, and a pressing member disposed above the weight holding member for restricting an upper movement of the weight holding member. The load detecting unit converts a load of the sample placed on the sample plate into an electrical signal according to a sensitivity coefficient to determine the weight of the sample. The sensitivity coefficient is calibrated when the load of the calibration weight is applied to the load detecting unit.

REFERENCES:
patent: 4932486 (1990-06-01), Komoto et al.
patent: 10307058 (1998-11-01), None
patent: 2000-74730 (2000-03-01), None

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