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Class Information
Number: 137/15.25
Name: Fluid handling > Processes > Cleaning, repairing, or assembling > Valve or valve element assembling, disassembling, or replacing > Butterfly valve
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
8590557 Dual flap device for the environmentally tight connection of two receptacles Nov. 26, 2013
8434506 Flow control valve and method for manufacturing the same May. 7, 2013
8430113 Method of manufacturing valve, and valve produced by the method Apr. 30, 2013
8381754 Low friction butterfly ring Feb. 26, 2013
8251088 Variable orifice for particulate coal conduit Aug. 28, 2012
7913389 Method of making a flapper valve assembly Mar. 29, 2011
7637278 Switching valve and respective manufacturing method Dec. 29, 2009
7624750 Flapper valve with mold-in-place bearings Dec. 1, 2009
7614416 Process for producing a throttle-valve housing and a throttle valve Nov. 10, 2009
7543759 Multi-valve damper for controlling airflow and method for controlling airflow Jun. 9, 2009
7427057 Control valve assembly of a carburetor and method of assembly Sep. 23, 2008
7296585 Elliptical sealing surface for butterfly valve Nov. 20, 2007
7275557 Method for the production of an electronically controlled butterfly valve with an inductive sensor of "contact-free" type for an internal combustion engine Oct. 2, 2007
7225825 Valve seal and method of installing a valve seal Jun. 5, 2007
7118092 Method and apparatus for assembling a vane-type valve Oct. 10, 2006
6991177 Multi-valve damper for controlling airflow and method for controlling airflow Jan. 31, 2006
6971632 Throttle plate wedge Dec. 6, 2005
6945513 Throttle valve arrangement Sep. 20, 2005
6918401 Throttle shaft assembly and method of attachment Jul. 19, 2005
6901942 Butterfly valve with injection-molded shaft Jun. 7, 2005
6854711 Assembly consisting of a housing and a flap unit Feb. 15, 2005
6840260 Method of manufacturing a throttle valve connection piece and a housing therefor Jan. 11, 2005
6698445 Fluid flow control damper assembly Mar. 2, 2004
6684898 Dual actuator air turbine starter valve Feb. 3, 2004
6626422 Control valve Sep. 30, 2003
6612325 Control valve assembly of valve assembly-injection-molded control valves or modules Sep. 2, 2003
6568417 Throttle valve assembly May. 27, 2003
6564819 Fluid flow control damper assembly May. 20, 2003
6520198 Structure and method for mounting damper Feb. 18, 2003
6497245 Intake air controller for internal combustion engine and manufacturing the same Dec. 24, 2002
6439255 Valve flapper with dynamic circumference seal Aug. 27, 2002
6431142 Throttle blade having snap-fit wedge Aug. 13, 2002
6367773 Throttle valve control device Apr. 9, 2002
6296007 Heated valve for operation in freezing conditions Oct. 2, 2001
6273119 Exhaust control valve and method of manufacturing same Aug. 14, 2001
6263898 Throttle shaft with return spring and spring cover and method of assembling the same Jul. 24, 2001
6213141 Rotary valve apparatus and associated methods Apr. 10, 2001
5941266 Angle entry rotary valve Aug. 24, 1999
5788218 Damper system with edge sealed damper blade and method of assembly Aug. 4, 1998
5533543 Poppet seat for air regulating devices Jul. 9, 1996
5458148 Fluid flow control damper assembly and method Oct. 17, 1995
5370148 Butterfly valve assembly and method of manufacture Dec. 6, 1994
5357997 Valve with segmented retainer ring Oct. 25, 1994
5277216 Method of attaching a valve disc to a drive shaft Jan. 11, 1994
5168890 Method and device for fitting a rotary throttle unit in a pipe Dec. 8, 1992
4967779 Method of installing a valve seat in a valve body Nov. 6, 1990
4858517 Fire damper kit Aug. 22, 1989
4718445 Position indicator for a rotary valve actuator Jan. 12, 1988
4697615 Butterfly valve for controlling high-temperature fluid Oct. 6, 1987
RE32362 Fire damper and method of fabrication Feb. 24, 1987

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