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. 03, 2010
Filed:
Jul. 31, 2006
Allen C. Fagerlund, Marshalltown, IA (US);
Frederick W. Catron, Gladbrook, IA (US);
Charles L. Depenning, Marshalltown, IA (US);
Paul T. Alman, Marshalltown, IA (US);
Ted D. Grabau, Marshalltown, IA (US);
Allen C. Fagerlund, Marshalltown, IA (US);
Frederick W. Catron, Gladbrook, IA (US);
Charles L. DePenning, Marshalltown, IA (US);
Paul T. Alman, Marshalltown, IA (US);
Ted D. Grabau, Marshalltown, IA (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
A fluid pressure reduction device comprises two or more stackable annular plates. Each disk having a perimeter and a hollow center aligned along a longitudinal axis when the annular plates are stacked one on top of the other. Each disk further comprising at least one inlet flow sector having an inlet flow stage for defining a first inlet area and a first outlet area, and at least one outlet flow sector having an outlet flow stage defining a second inlet area and a second outlet areas wherein the ratio of the second inlet area to the second outlet area is predetermined to define a backpressure at the outlet flow stage to provide a sub-sonic fluid flow at the perimeter.