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:
Apr. 06, 1976
Filed:
Dec. 03, 1974
Applicant:
Inventors:
Assignees:
Kabushiki Kaisha Meidensha, Tokyo, JA;
The Tokyo Electric Power Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323 / ; 323 / ; 324 45 ;
Abstract
An instrument transformer being applicable for a current transformer and/or a voltage transformer which is comprised of a coil for developing magnetic field related to a primary current, the Hall element for generating the voltage in response to the magnetic field developed by the coil, a shield pipe for supporting and enclosing the Hall element, and a cone shaped insulating layer being laid between the coil and the shield pipe, enclosing the shield pipe.