Vibrating tray scale with conveying mechanism

Details Vibrating tray scale with conveying mechanism Vibrating tray scale with conveying mechanism

1989-08-07

1990-02-27

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

177145, 177154, G01G 314, G01G 1900, G01G 2302

Patent

active

049037889

ABSTRACT:
Apparatus and method of determining the mass of an article by the shift of the period of oscillation of a flexibly mounted tray. An article whose mass is to be determined is placed upon the tray which is caused to oscillate and the period of harmonic motion is calibrated. This period is compared against the period of harmonic motion when there is no article upon the tray, and the difference, or shift, in frequency, allows a determination of the mass of the article. The tray is supported by a plurality of flexible members having parallelogram configuration that eliminates bending stresses.

REFERENCES:
patent: 2707630 (1955-05-01), Molins
patent: 4049068 (1977-09-01), Kavanagh et al.
patent: 4158395 (1979-06-01), Brown
patent: 4370888 (1983-02-01), Popper

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