Scale with weight-to-period transducer

Details Scale with weight-to-period transducer Scale with weight-to-period transducer

1979-01-08

1980-12-16

Hartary, Joseph W.

Weighing scales

Self-positioning

Electrical current generating or modifying

310338, 331 65, G01G 313

Patent

active

042390885

ABSTRACT:
A postage scale includes a directly loaded weight-to-period transducer which provides an oscillating output, the period of which varies as a function of the weight to be measured. The transducer includes a disc of piezoelectrically active material bonded to an inactive substrate base which dishes at its center in response to the weight to be measured. The transducer frequency output is processed to provide a digital period signal. A reference oscillator having matched temperature characteristics generates a high frequency count calibrated for scaling the transducer period to a weight count. The high frequency signal and the period signal are gated to provide an input to a counter which generates a digital weight information signal. The weight information signal is transmitted to a mailing system processor for use in determining the postage requisite for mailing the article.

REFERENCES:
patent: 3332506 (1967-07-01), Bradfield
patent: 3541849 (1970-11-01), Corbett
patent: 3991840 (1976-11-01), Rawcliffe
patent: 4041289 (1977-08-01), Brosh

Affiliated with

Also associated with

Rating

Scale with weight-to-period transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scale with weight-to-period transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scale with weight-to-period transducer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-602801