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. 29, 1996
Filed:
Feb. 03, 1995
Applicant:
Inventor:
Paul W Paddock, McMinnville, OR (US);
Assignee:
Lineaum Corporation, Portland, OR (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381202 ; 381193 ;
Abstract
An audio transducer includes a rigid base plate and a flexible foam element attached to the plate. The foam element has a 'B' shaped cross section, with a plastic film diaphragm conformally attached to the dual semi-cylindrical front surface of the foam element. The foam element defines a large circular bore for receiving a magnet assembly attached to the plate, with a electrical coil attached to the diaphragm and received within a gap defined within the magnet assembly. The plate and diaphragm are sealed to the foam element to provide an environmentally sealed chamber within the bore.