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:
Jan. 13, 2009
Filed:
Apr. 13, 2005
Applicant:
Enrique M. Stiles, Imperial Beach, CA (US);
Inventor:
Enrique M. Stiles, Imperial Beach, CA (US);
Assignee:
STEP Technologies Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electromagnetic transducer such as an audio speaker, having a multi-gap geometry in which there are two or more magnetic air gaps over which magnetic flux flows in a same radial orientation. The magnetic flux is provided by one or more radially-charged magnets.