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. 28, 2020
Filed:
Jul. 11, 2017
Nippon Seiki Co., Ltd., Niigata, JP;
Satoshi Ota, Niigata, JP;
NIPPON SEIKI CO., LTD., Niigata, JP;
Abstract
A control substrate is provided with a first electric current limiting resistor and a first voltage limiting Zener diode which are connected to a power supply line, and second electric current limiting resistors and second voltage limiting Zener diodes which are connected to communication lines. Of an electronic circuit configured from the control substrate and a sub-substrate, a first area connected to one side of the power supply line and the communication lines and a second area connected to the other side thereof with reference to the first and second electric current limiting resistors and the first and second voltage limiting Zener diodes are arranged spaced apart from each other by a predetermined interval so that the areas are considered separate areas in terms of intrinsically safe explosion-proof requirements.