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. 29, 1977
Filed:
Apr. 07, 1975
Applicant:
Inventors:
Shougo Seno, Yokohama, JA;
Masao Takeda, Osaka, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338174 ; 338312 ;
Abstract
A variable resistor comprises an insulation plate, conductors of a cermet material formed on the insulation plate, a resistor of a cermet material formed on the insulation plate in contact with the conductors, a slider member adapted to move slidably on the resistor and portions of the conductors, and coatings of a cermet resistance material formed on the conductors at the portions which are slidably wiped by the slider member.