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. 27, 2004
Filed:
Nov. 21, 2002
Herbert L. Hoffman, Seattle, WA (US);
Pat Parkin, BonneyLake, WA (US);
Frederick R. Helms, Puyallup, WA (US);
Wen-Hwang Lin, Moorpark, CA (US);
Roy Hai-Tien Loh, Thousand Oaks, CA (US);
Yeu-Chuan Hsia, Northridge, CA (US);
Naval Agarwal, Sammamish, WA (US);
F. Wayne Hollatz, Elma, WA (US);
Robert J. Devitis, Baytown, TX (US);
Richard A. Black, Lynnwood, WA (US);
Wendell R. Miller, Bellevue, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A valve for controlling a flow of a fluid between a first environment to a second environment is provided. The valve includes a frame that fits within an aperture in a divider separating the first environment from the second environment. Additionally, the valve includes at least one gate mounted and movable within the frame to control a flow of the fluid between the first environment and the second environment through the aperture. The gate includes a surface, wherein at least one portion of the surface includes a rough texture. The rough texture reduces coherent vortex shedding of the fluid as the fluid passes over the gate surface.