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. 23, 2016
Filed:
Jun. 26, 2014
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Akihiro Shibasaki, Tokoname, JP;
Katsumi Inukai, Iwakura, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-Shi, Aichi-Ken, JP;
Abstract
In a heating device, a detector detects AC voltage of the AC power source. A control device detects a zero-cross timing of the AC voltage by using the detector and generate a signal having a high level period of time, a low level period of time, a rising transition changing from a low level to a high level, and a falling transition changing from the high level to the low level. The signal is such a form that at least one of the rising transition and the falling transition is in incoincidence with the zero-cross timing. The control device controls the heating switch to perform a switching action in which the heating switch is rendered on when the zero-cross timing is detected during the high level period of time and rendered off when the zero-cross timing is detected during the low level period of time.