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:
Apr. 28, 1987
Filed:
Feb. 26, 1986
Shizutaka Nishizako, Nagoya, JP;
Toshikazu Kitou, Nagoya, JP;
Shinki Shoji, Nagoya, JP;
Sadaaki Baba, Nagoya, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electromagnet coil 2 wound on a fixed iron core 6 is energized by d.c. current supplied from a full-wave rectifier 1 to attract a movable armature 7. A transistor 10 is connected in series with the coil, a bias resistor 8 is connected across the coil to the base of the transistor, and a capacitor is connected between the base and collector of the transistor. The capacitor absorbs inductive energy stored in the coil 2 when the a.c. supply circuit is opened to thereby reduce the armature release time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile