Valves and valve actuation – Relatively movable valve elements form single port closure
Reexamination Certificate
2006-04-04
2006-04-04
Jacyna, J. Casimer (Department: 3751)
Valves and valve actuation
Relatively movable valve elements form single port closure
C251S004000
Reexamination Certificate
active
07021604
ABSTRACT:
An iris valve for controlling the flow of bulk solid materials includes a flexible cylindrical sleeve, a control ring, and a polymeric isolator disc, all sandwiched between upper and lower body members. Rotating the control ring twists the flexible sleeve in an iris pattern to close an opening through the valve. Clamp bands attached to the upper body member and control ring include a machined helical pattern to securely grip the ends of the flexible sleeve, and a threaded handle locks the control ring in place against the body members.
REFERENCES:
patent: 2835272 (1958-05-01), Taupin
patent: 3383131 (1968-05-01), Rosfelder
patent: 5449141 (1995-09-01), Gillett et al.
patent: 2005/0092944 (2005-05-01), Patterson
Brochures for FMC Technologies on Iris Flow Control Valve information located at www.levyindustrial.com/fmc/prode.htm; SFV and DFV Series Specifications, p. 5; FV Series Specifications, p. 4 (2 pages); (note the effective date of the publication is more than one year prior to the filing date of this application.).
Brochures for Control Automation Pty. Limited on Cadcon Valves located at http://www.kockumsbulk.com.au/brochures/Cadcon%20Brochure.pdf (3 pages); (note the effective date of the publication is more than one year prior to the filing date of this application.).
Brochure for Kemutec Powder Processing Solutions on Powder Processing Solutions located at www.kemutec.com/htm/products/mucon/valves/idv/ad.htm (3 pages); (note the effective date of the publication is more than one year prior to the filing date of this application.).
Davis Harmon Lee
Leach Monty Richard
Werner Shawn Michael
Jacyna J. Casimer
Salina Vortex Corporation
Stinson Morrison & Hecker LLP
Wharton J. David
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