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:
Jul. 12, 1977
Filed:
Jun. 27, 1975
Applicant:
Inventors:
Tutomu Ishiguro, Kawaguchi, JA;
Yukio Katano, Kawaguchi, JA;
Assignee:
Kabushiki Kaisha KIP, , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219469 ; 219471 ;
Abstract
A circuit for detecting trouble in a sliding contact mechanism comprising a fixed contact portion and a movable contact portion, said fixed portion being connected to an electric power source. A radio-frequency signal is generated when insufficient electrical connection is caused in the sliding contact mechanism by, for example, depositing dusts thereon, said signal being delivered to a suitable alarm device to indicate the troublesome state.