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. 18, 2003
Filed:
Jul. 16, 2001
Yoshio Hanato, Sabae, JP;
Kazuo Kasahara, Miyagi-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A chip-type common mode choke coil having protrusions extending in an axial direction of a winding core portion and being formed in areas between a plurality of electrodes (four electrodes), at the inside surfaces of two flanges, that is, at opposing surfaces of the two flanges, one being disposed on each end of the winding core portion, in order to increase the stroke distances between the corresponding electrodes. In the choke coil, the protrusions separate the corresponding electrodes in order to prevent the occurrence of a short circuit caused by two wires also coming into contact with the electrodes adjacent to the electrodes to which they are primarily to be connected. For the protrusions, protrusions having at least one of a triangular shape, a square shape, a rectangular shape, a trapezoidal shape, and a substantially semicircular shape in plan view are disposed. Accordingly, the chip-type common mode choke coil makes it possible to prevent the occurrence of a short circuit caused by the wires coming into contact with the corresponding adjacent electrodes, the occurrence of reduced withstand pressure, and the occurrence of insufficient insulation. In addition, it can have high mechanical strength as a result of increased cross-sectional areas of the legs, and be highly reliable.