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:
Jul. 15, 2008
Filed:
Dec. 21, 2006
Koji Fukumura, Osaka, JP;
Koji Fukumura, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
First, it is confirmed that the contactoris not damaged. Next, an initial preset signal PR is supplied at the state in which the contactoris contacted to the master work MW. For this reason, CPU stores the reference value in EEPROM. If the timing signal is supplied at the state in which the contactoris contacted to the non-defective object W, the CPU obtains the measurement value and corrects the measurement value by the reference value. When the difference between the reference value obtained during the measurement of the actual object W and the previous reference value stored in EEPROM is more than a predetermined value, it is judged that the contactoris damaged, and warning signal is output. As this warning signal, the judgment signal Hi and the judgment signal Lo become from a low level to a high level.