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.

Date of Patent:
May. 02, 1989

Filed:

Jul. 07, 1988
Applicant:
Inventor:

Akira Sekiguchi, Higashimatsuyama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731181 ; 123479 ;
Abstract

A trouble detecting method and apparatus for detecting trouble in either of a first pulse generator for generating first pulses and a second pulse generator for generating N second pulses between each pair of successive first pulses. The number of the second pulses produced between each pair of successive first pulses is repeatedly counted and it is detected whether or not the result of the count is cyclically more than a first predetermined value and whether or not the maximum count cyclically reaches a second predetermined value. On the basis of the results of the detections the determination is made as to whether either of the pulse generators has malfunctioned and if so which.


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