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. 22, 2011
Filed:
Jan. 22, 2008
Yuuji Kakuya, Okazaki, JP;
Masanori Kawaura, Nukata-gun, JP;
Norio Sanma, Okazaki, JP;
Toshihito Nonaka, Chiryu, JP;
Kyojiro Suzuki, Nagoya, JP;
Yuuji Kakuya, Okazaki, JP;
Masanori Kawaura, Nukata-gun, JP;
Norio Sanma, Okazaki, JP;
Toshihito Nonaka, Chiryu, JP;
Kyojiro Suzuki, Nagoya, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
An electromagnetic impedance sensor detects an object made of conducting material or soft magnetic material with contact-free. The sensor includes: a detection coil; and a detection circuit for supplying electricity to the coil and for measuring electromagnetic impedance change in the coil. The detection coil includes multiple coil portions provided by one wire. One coil portion has a side adjacent to a corresponding side of another coil portion. The side and the corresponding side extend along with a direction, and the side has a current flowing direction, which is the same as the corresponding side.