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Class Information
Number: 137/614.13
Name: Fluid handling > Systems > Flow path with serial valves and/or closures > Common actuator > Alternately seating
Description: Systems wherein as one valve is moved toward its closed position, another valve is simultaneously moved toward its open position.










Sub-classes under this class:

Class Number Class Name Patents
137/614.14 Biased valve 23


Patents under this class:

Patent Number Title Of Patent Date Issued
8387651 Self-draining frost-free faucet Mar. 5, 2013
8312894 Ambient air backflushed filter vacuum Nov. 20, 2012
8181757 Adjustable damping valve with a fail-safe damping force characteristic May. 22, 2012
7607588 Sink spray head with supply jet variation and flow rate regulation Oct. 27, 2009
6948512 Flushing attachment for hydrant Sep. 27, 2005
6648006 Valve and a method of closing a valve Nov. 18, 2003
6382239 Leak-detecting diverter valve May. 7, 2002
6192923 Electromagnetic flow control device Feb. 27, 2001
6112137 Adaptive system for predictive control of district pressure regulators Aug. 29, 2000
5954089 Electromagnetic regulator utilizing alternate valve operating modes for gas pressure regulation Sep. 21, 1999
5901729 Material flow control arrangement and method May. 11, 1999
5421358 Fluid valve mechanism and valving method Jun. 6, 1995
5309934 Balanced piston fluid valve May. 10, 1994
5244011 Control valve Sep. 14, 1993
5158105 Anti-siphon freezeless hydrant Oct. 27, 1992
5135032 Slurry gate valve Aug. 4, 1992
4997108 Tap and liquid dispenser using the same Mar. 5, 1991
4995416 Process for controlling the medium inlet into at least one leakage cavity of a valve and an apparatus for its performance Feb. 26, 1991
4796665 Multi-purpose draining valve Jan. 10, 1989
4733692 Tube coupling Mar. 29, 1988
4716921 Filler sterilization system Jan. 5, 1988
4532954 Wall hydrant Aug. 6, 1985
4457337 Drain valve, preferably for a vehicle brake system Jul. 3, 1984
4457328 Combined positive seal and repetitive actuation isolation valve Jul. 3, 1984
4351414 Lubricant fitting Sep. 28, 1982
4072248 Metering apparatus Feb. 7, 1978
4007760 Fuel control system and control device therefor or the like Feb. 15, 1977











 
 
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