The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1978
Filed:
Sep. 13, 1976
Applicant:
Inventor:
John R Durbin, Kirkwood, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06M / ; G06M / ;
U.S. Cl.
CPC ...
235 / ; 235 / ; 235 / ; 235 / ;
Abstract
For counting objects moving along a line of flow in a forward or reverse direction, a system utilizes upstream and downstream sensors and a logic subsystem to provide pulse signals to a counter. The logic subsystem produces an upcount or downcount signal only after a sequence of system states is consecutively achieved. Before a count signal is produced an intervening state-confirming signal is required. When such confirming signal is followed by a count-producing signal the logic subsystem automatically resets to a reverse flow condition. Thus, neither vibrations nor reversal of object flow at any point will cause a false count.