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. 03, 2009
Filed:
Jan. 08, 2003
Applicants:
Masafumi Hashimoto, Sakai, JP;
Sumio Kagimura, Sakai, JP;
Hiroshi Dohmae, Sakai, JP;
Inventors:
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/28 (2006.01); H03H 7/03 (2006.01); H01F 30/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A noise filter eliminates noise generated by a noise generating source in an outdoor unit in an air conditioner. Power is supplied from a power source to an indoor unit via the outdoor unit. A choke coil is formed by winding power source lines and indoor/outdoor lines inter unit lines around a common magnetic body. The number of turns of the power source lines and that of the indoor/outdoor lines are preferably set so as to be almost proportional to their impedances. Due to this arrangement, noises of the lines can be cancelled while maintaining balance of influences on the magnetic field of the choke coil.