Produce grader

Details Produce grader Produce grader

1975-02-26

1976-03-16

Borchelt, Archie R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2091116, 250214R, 330 10, 356178, 356195, B07C 5342

Patent

active

039448193

ABSTRACT:
A produce grader that includes first and second signal paths for producing first and second signals corresponding to respective detected characteristics of an article of produce being graded. Each signal path includes chopper means for converting d.c. signals to a.c. signals, a.c. amplifier means, and means including synchronous detector means for reconverting amplified a.c. signals to d.c. signals. The reconverted signals are compared and/or evaluated to establish a basis for grading. Means are provided for adjusting the duty cycle of the gating signal controlling at least one synchronous detector thereby adjusting the gain of the corresponding signal path and adjusting the calibration of the grader.

REFERENCES:
patent: 3060790 (1962-10-01), Ward
patent: 3173017 (1965-03-01), Thayer
patent: 3691470 (1972-09-01), Naylor
patent: 3735274 (1973-05-01), Nelson
patent: 3795811 (1974-03-01), Weir

Affiliated with

Also associated with

Rating

Produce grader does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-294578