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:
Aug. 22, 2006
Filed:
Feb. 10, 2003
Applicant:
Earl Geddes, Northville, MI (US);
Inventor:
Earl Geddes, Northville, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase plug for optimally matching a drive-unit's diaphragm to the throat of a waveguide is disclosed. Specific embodiments of a circular diaphragm matched to an elliptical waveguide and a circular diaphragm to a rectangular waveguide are disclosed.