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:
Mar. 20, 2012
Filed:
Apr. 14, 2005
Fumio Ichihara, Chikushi-gun, JP;
Akihiro Yamashita, Miyaki-gun, JP;
Tsunehiro Hanada, Fukuoka, JP;
Mutsuhiko Oishi, Izuka, JP;
Toshiyuki Wakisaka, Izuka, JP;
Masahiro Maki, Kasuya-gun, JP;
Fumio Ichihara, Chikushi-gun, JP;
Akihiro Yamashita, Miyaki-gun, JP;
Tsunehiro Hanada, Fukuoka, JP;
Mutsuhiko Oishi, Izuka, JP;
Toshiyuki Wakisaka, Izuka, JP;
Masahiro Maki, Kasuya-gun, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A line state detecting apparatus provided in a balanced transmission system includes, in transmission lines comprising a pair of conductors WWconnected to a transmitting portioncurrent transformers TTprimary sides of which are inserted to respectives thereof in series therewith and secondary sides of which are connected in series to cancel currents or voltages of the two transformer by each other, and a detecting portionfor detecting currents or voltages on secondary sides of the current transformers TT. By an output of the detecting portiona difference of currents or voltages of the conductors WWof the transmission lines is provided and an unbalance component between the conductors WWis detected.