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:
Aug. 15, 1978
Filed:
Feb. 11, 1977
Applicant:
Inventors:
Daniel L Queen, Chicago, IL (US);
Kenneth W Belt, Berwyn, IL (US);
Assignee:
Perma-Power Inc., , US;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
325348 ; 325403 ; 325478 ;
Abstract
A wireless microphone and receiver in which the receiver output is muted whenever there is insufficient carrier present at the receiver to provide a clear noise free recovered audio or when there is radio frequency interference of a nature in strength to cause amplitude modulation on the IF envelope at the input to the FM detector. The invention places the receiver into a sampling mode whenever it is in a muted condition to conserve batteries and to provide a visual indication of such condition.