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:
May. 26, 1992
Filed:
Feb. 20, 1991
Takashi Kimura, Aichi, JP;
Toshiaki Nawa, Aichi, JP;
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Abstract
A key system provided with the key, a magnetic core, a cylinder body and the magnetic field generation coil. In the key system communication is performed through magnetic coupling between the key and a cylinder so as to drive a controlled object. An inductance and capacitance resonance (LC) circuit having intrinsic resonance points as key information is mounted in the head of the key. The magnetic core is secured to the outside circumferential surface of a rotor at the key insertion hole thereof so as to form a magnetic circuit in cooperation with the key when the key is inserted into the key insertion hole.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile