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:
Jul. 11, 2006
Filed:
May. 22, 2003
Michael Joseph Bowe, Preston, GB;
Michael Joseph Bowe, Preston, GB;
Accentus PLC, Didcot, GB;
Abstract
A valve assembly () comprises a valve stem () with a bore () and radial apertures (), and a sleeve () closed atone end and slidable over the valve stem () to obstruct the apertures (). At the end of the valve stem opposite the outlet end, the valve stem () defines a fluidic vortex chamber () with both tangential inlets () and non-tangential peripheral inlets (), and with an axial outlet () communicating with the bore (). The sleeve () defines at least one radial port () near its closed end. The valve assembly operates in a conventional fashion except when approaching closure. Once the last of the apertures () in the valve stem has been closed, the only flow path is through the fluidic vortex chamber (). Further movement of the sleeve () alters the distribution of the flow between the non-tangential inlets () and the tangential inlets (), so adjusting the strength of the fluidic vortex and the resistance to fluid flow. The valve assembly () suppresses erosive and cavitational wear of the valve mechanism, and can provide a wide range of flow modulation.