Mohammed D Chowdhury

US Patent:

7546898, Jun 16, 2009

Filed:

Jul 30, 2007

Appl. No.:

11/830655

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

International Classification:

F01N 7/04
H05K 7/20
F01N 7/08
E04F 17/04

US Classification:

181225, 181224, 361696, 361697

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.

US Patent:

7779960, Aug 24, 2010

Filed:

Aug 18, 2006

Appl. No.:

11/506644

Inventors:

Punan Tang - Houston TX, US
Thomas P. Jasso - Houston TX, US
Mohammed I. Chowdhury - Houston TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

F01N 1/16
F01N 1/24

US Classification:

181225, 181224, 181287

Abstract:

Embodiments of the present invention relate to a computer system. In one embodiment, the computer system comprises a fan and a muffler configured to suppress noise from the fan. The muffler may comprise a plurality of acoustic absorption sheets, wherein the acoustic absorption sheets each have a hole at least generally aligned with a flow area of the fan.

US Patent:

7891464, Feb 22, 2011

Filed:

Jun 15, 2006

Appl. No.:

11/453694

Inventors:

Punan Tang - Houston TX, US
Thomas P. Jasso - Houston TX, US
Mohammed I. Chowdhury - Houston TX, US

Assignee:

Hewlett-Packard Development, L.P. - Houston TX

International Classification:

F01N 1/04
E04F 17/04

US Classification:

181225, 181224, 361695

Abstract:

Embodiments of the present invention relate to a system and method for noise suppression. Specifically, embodiments of the present invention include a resonator configured to suppress noise from an electric fan. The resonator may comprise an enclosure having an outer perimeter, a major opening through the enclosure and defining an inner perimeter of the enclosure, a minor opening disposed along the inner perimeter, and a chamber coupled to the minor opening within the enclosure between the inner and outer perimeters.