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Class Information
Number: 137/601.05
Name: Fluid handling > Systems > Dividing into parallel flow paths with recombining > With common operator > Rotary valve
Description:










Sub-classes under this class:

Class Number Class Name Patents
137/601.07 Axes of rotation of valves intersect at point 3
137/601.08 Axes of rotation parallel 12
137/601.06 Including rigid plate with flexible or resilient seal 22


Patents under this class:

Patent Number Title Of Patent Date Issued
8636567 Damper to control fluid flow and associated methods Jan. 28, 2014
8336309 Turbocharger with dual wastegate Dec. 25, 2012
7506662 One-way fluid valve Mar. 24, 2009
6962167 Choke valve Nov. 8, 2005
6880572 Exhaust gas control valve, apparatus and method of controlling exhaust gas flow Apr. 19, 2005
6719001 Fluid-directing multiport rotary valve Apr. 13, 2004
6431202 Fluid-directing multiport rotary valve Aug. 13, 2002
6330891 Double-damper apparatus Dec. 18, 2001
6048171 Bleed valve system Apr. 11, 2000
5394339 Apparatus for analyzing oil well production fluid Feb. 28, 1995
5167252 High temperature control damper with sealing flange Dec. 1, 1992
4893698 Exhaust brake unit equipped with a pair of swing flap valves Jan. 16, 1990
4643081 Louver system with adjustable slats, featuring removable modular slat clips Feb. 17, 1987
4628954 Multi-use damper Dec. 16, 1986
4546606 Pressure drop regulating device Oct. 15, 1985
4525623 Hair-drier with valves for controlling the air flow Jun. 25, 1985
4438049 Carburetor engine idle speed air bypass Mar. 20, 1984
4377181 High temperature dual butterfly valve Mar. 22, 1983
4312381 Air flow damping system Jan. 26, 1982
4250917 Air flow reverser system Feb. 17, 1981
4219185 Rotating blade fire damper Aug. 26, 1980
4081173 Rotating blade fire damper Mar. 28, 1978
4080978 Smoke, fire and air control damper Mar. 28, 1978
3994335 Multizone air conditioning system Nov. 30, 1976
3942422 Roof ventilator Mar. 9, 1976
3938430 Air vents Feb. 17, 1976











 
 
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