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. 15, 1980
Filed:
Mar. 13, 1978
Applicant:
Inventor:
Derek R Allen, Corona del Mar, CA (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; H04R / ;
U.S. Cl.
CPC ...
181131 ; 181137 ;
Abstract
A stethoscope head having a bell and a diaphragm. The bell is offset from the diaphragm axis. The bell axis intersects the diaphragm axis at an acute angle of not less than twenty degrees or more than seventy degrees, and preferably at thirty degrees. A selectively movable valve is provided to connect the bell and the diaphragm, individually, to an airway which may be connected to a sound tube leading to binaurals. The valve comprises a cylindrical spool seated and totally supported within a cylindrical bore in the head body.