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:
Dec. 26, 1989
Filed:
Oct. 20, 1987
Applicant:
Inventors:
Richard Nicolet, Granges, CH;
Daniel Koch, Cremines, CH;
Assignee:
ETA S.A. Fabriques d'Ebauches, Granges, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
342 51 ; 340505 ; 34082554 ; 342 42 ;
Abstract
The antenna elements of the transponder of this invention are pierced with openings and thus have a general form of loops surrounding spaces devoid of any metallic elements. This arrangement diminishes the capacitance of the stray capacitor formed by the antenna elements and the body of the person carrying the transponder, thus improving the gain thereof. The invention is particularly applicable in the search for avalanche victims.