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:
Aug. 12, 2014

Filed:

Apr. 26, 2010
Applicants:

Haruyuki Kurachi, Chiyoda-ku, JP;

Tatsuaki Kamiya, Chiyoda-ku, JP;

Inventors:

Haruyuki Kurachi, Chiyoda-ku, JP;

Tatsuaki Kamiya, Chiyoda-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 23/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A safety apparatus includes: a latch circuit which retains an inconsistent state record when input signals from a plurality of sensors are in an inconsistent state, and frees the inconsistent state record when the input signals from the plurality of sensors are all in an OFF state; and an AND circuit which performs a sensor fault determination at timing when the input signals from the plurality of sensors are all in an ON state, the sensor fault determination including determining that at least one of the plurality of sensors is failed if the latch circuit retains the inconsistent state record and determining that none of the plurality of the sensors is failed if the latch circuit retains no inconsistent state record.


Find Patent Forward Citations

Kurachi, Haruyuki. (2014). Safety apparatus and fault detection method (U.S. Patent No. 8803654). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8803654

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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