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:
Feb. 03, 2009
Filed:
Jan. 24, 2008
Tetsu Inoue, Osaka, JP;
Tsuyoshi Tagashira, Osaka, JP;
Tetsu Inoue, Osaka, JP;
Tsuyoshi Tagashira, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
A multi-optical axis photoelectric sensor is describes having a first indicating portion disposed at each of the light emitting and receiving units comprising a plurality of first indicating elements being in the same row of each of the light emitting and receiving elements with no-interference to each of the light emitting and receiving elements, a second indicating portion disposed at one of the light emitting and receiving units and comprising a plurality of second indicating elements being out of the same row of one of the light emitting and receiving elements of the units having the second indicator portion with no-interference to one of the light emitting and receiving elements of the units having the second indicator portion and an indicating control portion for turning on the plurality of the first indicating elements of the first indicating portion to show the first and second rows of the units when the binary signal indicating the first status is outputted by the status output circuit and indicating a result of the diagnosis based on the diagnosis device with a predetermined turn-on pattern of the plurality of the second indicating elements of the second indicating portion when the malfunction is diagnosed by the diagnosis device.