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:
Nov. 18, 2014
Filed:
Oct. 20, 2010
Kazuya Kamada, Nagoya, JP;
Kazuya Hirota, Nagoya, JP;
Kenji Nakai, Nagoya, JP;
Rinnai Corporation, Nagoya-Shi, JP;
Abstract
A solenoid valve control device is provided with: a first relay connected in series to a drive coil of a solenoid valve between output terminals of a rectifier circuit; a photocoupler configured to output a voltage of a GND level when a current equal to or greater than a predetermined level is flowing in a contact in the first relay and output a voltage of a Vlevel when the current equal to or greater than a predetermined level does not flow in the contact in the first relay; and an integration circuit configured to smooth an output voltage Vafrom the photocoupler. When an output voltage from the integration circuit is not greater than a first threshold value, a microcomputer detects that the first relay is in an on state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile