Method of and apparatus for counting flat objects in a stream of

Details Method of and apparatus for counting flat objects in a stream of Method of and apparatus for counting flat objects in a stream of

1989-09-14

1991-04-02

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

377 49, 235 98C, G06M 710

Patent

active

050051920

ABSTRACT:
The sheets of a stream of partially overlapping sheets are counted during transport past a generator of ultrasonic waves which is operated by a control unit at a frequency such that each sheet reflects a series of successive waves. The resulting echoes are directed toward two discrete signal generators which transmit signals to an evaluating circuit by way of the control unit. The signals denote the length of intervals of propagation of waves from the source to the respective signal generators, and the circuit processes such signals to furnish information denoting the number of sheets which are conveyed past the locus of impingement of waves upon the sheets.

REFERENCES:
patent: 4217491 (1980-08-01), Dufford et al.
patent: 4296314 (1981-10-01), Dabisch et al.
patent: 4384195 (1983-05-01), Nosler
patent: 4450352 (1984-05-01), Olsson
patent: 4807263 (1989-02-01), Ohno

Affiliated with

Also associated with

Rating

Method of and apparatus for counting flat objects in a stream of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and apparatus for counting flat objects in a stream of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for counting flat objects in a stream of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-331418