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. 16, 1999
Filed:
May. 30, 1996
Applicant:
Inventors:
Scott F Touchton, Malvern, PA (US);
Donald L Peinetti, La Jolla, CA (US);
Assignee:
Invisible Fence Company, Inc., Malvern, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01K / ;
U.S. Cl.
CPC ...
119721 ; 119720 ; 119859 ;
Abstract
A transmitter for an electronic animal control system of the type employing a boundary wire antenna for radiating a predetermined radio frequency signal, is provided with phase detection circuitry for detecting a phase difference between the applied radio frequency signal and the electrical current within the antenna. Phase control circuitry is provided for adjusting the phase of the voltage with respect to the current in response to detecting a phase difference.