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:
Jan. 08, 2019
Filed:
Dec. 04, 2014
Yokogawa Electric Corporation, Musashino-shi, Tokyo, JP;
Hitoshi Saito, Musashino, JP;
Nobuhiro Kanatani, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
The purpose of the present invention is to enable use of a solenoid-type electromagnetic valve () in a valve driving device () that performs wireless communication. A contact signal converter () that converts an on-off contact signal to a control signal for operating a solenoid-type electromagnetic valve () comprises an explosion protection barrier () which restricts the current of the control signal to be no more than a maximum current established for safety regarding solenoid-type electromagnetic valves (), and a group of batteries (), the number of which can ensure a voltage at which the voltage supplied via the explosion protection barrier () surpasses the operating voltage of the solenoid-type electromagnetic valve ().