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:
Jun. 07, 1994
Filed:
Nov. 25, 1991
Masao Sakata, Ebina, JP;
Takemasa Iwasaki, Yokohama, JP;
Tsutomu Tsuyama, Yokohama, JP;
Sadao Shimoyashiro, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An equipment is diagnosed by monitoring a career of operations of the equipment necessary for diagnosing the equipment and a condition of the equipment during the operation, monitoring information on equipment operations and information on variations in operation of the equipment having started operation for a data gathering purpose, selecting some of the gathered data, classifying the selected data based on rules, computing characteristics of variations in equipment state during the operation of the equipment and diagnosing the data on the basis of criterion references for the characteristics prescribed by the rules as an equipment diagnostic procedure.