Oscillating and locking apparatus and method for vibrating tray

Details Oscillating and locking apparatus and method for vibrating tray Oscillating and locking apparatus and method for vibrating tray

1988-01-07

1989-06-06

Miller, Jr., George H.

Weighing scales

With weigher loading or unloading means

177210FP, 177229, G01G 1900, G01G 314, G01G 308

Patent

active

048363111

ABSTRACT:
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.

REFERENCES:
patent: 4049068 (1977-09-01), Kavanagh et al.
patent: 4158395 (1979-06-01), Brown

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