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:
Oct. 25, 1977
Filed:
Dec. 22, 1975
Applicant:
Inventor:
Charles B Huntress, Orange, CA (US);
Assignee:
Electronic Engineering Co. of California, Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
181135 ; 128152 ; 1791 / ;
Abstract
A self-forming ear plug element for use with a stethoscope type sound tube installation for transmitting audio sound to the ear and rejecting ambient noise. A conical portion having a sound-transmitting orifice enters the ear. A thin radially extensive shallow-conical acoustic flange extends outwardly from the major diameter part of the conical portion. Being soft, the flange easily conforms to the concha portion of the ear to increase the sound pressure level of the transmitted signal and to greatly attenuate ambient noise. A mounting horn for attaching the plug element to a stethoscope tube extends axially beyond the flange.