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. 24, 1981
Filed:
Dec. 26, 1979
Applicant:
Inventor:
John C Parr, Woodland Hills, CA (US);
Assignee:
International Telephone and Telegraph Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343763 ; 333261 ;
Abstract
A rotary annular, around-the-mast, radio frequency coupler having two concentric sets of generally axial loops, one fixed (stator set) and the other rotatable (rotor set) for electromagnetically coupling between a fixed and rotatable structure, such as a rotating antenna sub-system. Two methods and corresponding structure are provided for reducing the power transfer ripple occurring during rotation. These are prime related different loop totals between rotor and stator and angular canting of one loop set with respect to the other.