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:
Mar. 18, 2003
Filed:
May. 11, 2001
Applicant:
Inventors:
Robert James Monson, St. Paul, MN (US);
Trevor J. McCollough, Minneapolis, MN (US);
Jianhua Yan, Prior Lake, MN (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24F 7/007 ;
U.S. Cl.
CPC ...
F24F 7/007 ;
Abstract
A system including a cabinet for intaking or discharging a gas while minimizing external duct noise and a gas duct for attachment to a housing with the gas duct having a smoothly curved passageway therein with each portion of the passageway having a cross sectional area which is sufficiently large so that the ratio of the inertia forces to viscous forces within the passageway is sufficiently small so that a laminar flow condition is maintained throughout the gas duct.