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:
Sep. 02, 2008
Filed:
May. 04, 2007
Applicants:
Katsumi Takagi, Ina, JP;
Koichi Hirasawa, Ina, JP;
Inventors:
Katsumi Takagi, Ina, JP;
Koichi Hirasawa, Ina, JP;
Assignee:
KOA Corporation, Nagano, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01C 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A resistive element in the form of a bent metal plate is placed in a box-shaped case and has electrodes exposed out of the box-shaped case. A heat radiator in the form of a bent metal plate is also placed in the box-shaped case and has heat radiating electrodes exposed out of the box-shaped case. The resistive element and the heat radiator are held out of contact with each other and disposed in criss-cross relation to each other. The box-shaped case is filled with a cement material in surrounding relation to the resistive element and the heat radiator.