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:
Jul. 20, 1982
Filed:
Mar. 17, 1980
Applicant:
Inventor:
Rudolf Gorike, Vienna, AT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ;
Abstract
An electroacoustic transducer of the electrodynamic type comprises a flat magnetic system permeable to sound including a diaphragm with conducting tracks which are disposed within the system which has a mass provided with conducting tracks substantially equal to the mass of a diaphragm of equal size intended for capacitive transducers. The construction includes acoustic group delay time elements coupled to the diaphragm and a housing defining a shallow depth air chamber at one side of the diaphragm to give the transducer the form of a sound receiver with a unidirectional characteristic.