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:
Jun. 16, 2009
Filed:
Jul. 30, 2007
Applicants:
Mark S. Tracy, Tomball, TX (US);
Punan Tang, Houston, TX (US);
Mohammed I. Chowdhury, Houston, TX (US);
Herman A. Price, Houston, TX (US);
Inventors:
Mark S. Tracy, Tomball, TX (US);
Punan Tang, Houston, TX (US);
Mohammed I. Chowdhury, Houston, TX (US);
Herman A. Price, Houston, TX (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 7/04 (2006.01); H05K 7/20 (2006.01); F01N 7/08 (2006.01); E04F 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus comprises a housing comprising an air inlet, an air outlet and a divider that divides the housing into first and second air passages. The housing comprises a resonance chamber for each air passage. Each resonance chamber comprises a port, and air waves enter each such resonance chamber through such port and resonate.