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G01G 3/16 (2006.01) G01G 3/13 (2006.01) G01G 11/00 (2006.01) G01G 19/00 (2006.01)
Patent
CA 1317319
VIBRATING TRAY SCALE WITH CONVEYING MECHANISM Abstract of the Disclosure 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.
616241
Cordery Robert A.
Hubbard David M.
Macrae & Co.
Pitney Bowes Inc.
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