OSCILLATING AND LOCKING APPARATUS AND METHOD FOR VIBRATING TRAY WEIGHING SCALE

Oscillating and alternatively locking apparatus and method of determining the mass of an article by the shift of the period of oscillation of a flexibly mounted platform. An article whose mass is to be determined is placed upon the platform. The platform is caused to oscillate and the period of harm...

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Bibliographic Details
Main Author HUBBARD, DAVID W
Format Patent
LanguageEnglish
French
Published 09.06.1992
Edition5
Subjects
MEASURING
PHYSICS
TESTING
WEIGHING
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Summary:Oscillating and alternatively locking apparatus and method of determining the mass of an article by the shift of the period of oscillation of a flexibly mounted platform. An article whose mass is to be determined is placed upon the platform. The platform 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 platform, and the difference, or shift, in frequency, allows a determination of the mass of the article. A reversible motor is used to provide drive to a conveyor for transporting mail pieces onto the tray and for causing oscillation of the tray for purposes of weighing.
Bibliography:Application Number: CA19890587682