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:
Jun. 06, 2006
Filed:
May. 30, 2003
Nathan J. Hamblin, Marshalltown, IA (US);
Ted A. Long, Sugarland, TX (US);
Nathan J. Hamblin, Marshalltown, IA (US);
Ted A. Long, Sugarland, TX (US);
Fisher Controls International LLC, St. Louis, MO (US);
Abstract
A fluid control valve trim and seat with a valve plug of a radius of about 0.03 inch, when used in conjunction with a valve seat angle of about 75°, results in minimal unbalance area. The valve trim is provided with pairs of anti-cavitation notches. The notches are arranged such that notches of each given pair are angled with respect to one another, and may be further arranged such that adjacent pairs of notches are off-set relative to one another, so as to increase the time fluid spends in the plenum, resulting in proper staging and controlled pressure drop as fluid passes through the valve.