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Class Information
Number: 137/844
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Resilient material valve > Having expansible port
Description: Valve wherein the valve member comprises a resilient body which has a passage therethrough which passage expands to an open position when fluid pressure is applied to the body and retracts upon itself into a closed position when pressure is removed to thus seal the passage against fluid flow.










Sub-classes under this class:

Class Number Class Name Patents
137/845 Apertured plate 56
137/846 Having exit lip 191


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8701704 Manifold for a device for filtration with a set of least one filter cassette Apr. 22, 2014
8684041 Control valve for a device for variably adjusting the valve timing for gas exchange valves in an internal combustion engine Apr. 1, 2014
8636034 Oil-less and wetted pressure relief valves having an integrated filter Jan. 28, 2014
8622090 Plumbing fitting Jan. 7, 2014
8196894 Check valves for fuel cartridges Jun. 12, 2012
7997463 Nozzle, adhesive dispenser, and method of dispensing adhesive Aug. 16, 2011
7828325 Air-bag and a method of controlling pressure within an air-bag Nov. 9, 2010
7637893 Valved sheath introducer for venous cannulation Dec. 29, 2009
6854484 Valve for a slurry outlet opening of a chemical mechanical polishing device and chemical mechanical polishing device having a valve Feb. 15, 2005
6834677 Over-molded check valves for fluid delivery systems Dec. 28, 2004
6745763 Vaporizing device for administering sterile medication Jun. 8, 2004
6544208 Implantable shunt device Apr. 8, 2003
6453941 Pipe tubular element comprising a rigid longitudinal portion and a flexible longitudinal part in one single piece Sep. 24, 2002
6322541 Vascular introducer sheath and hemostasis valve for use therewith Nov. 27, 2001
6196260 Flow control valve Mar. 6, 2001
6176234 Mouthpiece for a nebulizer Jan. 23, 2001
6148860 Low volume vacuum toilet assembly Nov. 21, 2000
6092551 Duckbill valve Jul. 25, 2000
6085769 Telecommunications electronics enclosure drain valve Jul. 11, 2000
6042448 Balloon valve and method of producing Mar. 28, 2000
5931197 Asymmetrical check valve Aug. 3, 1999
5924452 Valve assembly Jul. 20, 1999
5881772 Smiling duckbill valve Mar. 16, 1999
5878778 Elastomeric cut-off valve Mar. 9, 1999
5830780 Self-closing valve structure Nov. 3, 1998
5823852 Water bag type brassiere padding with a valve Oct. 20, 1998
5769125 Inversion-resistant, readily openable tide gate valve Jun. 23, 1998
5660200 Double-valved variable pressure device for hydrocephaly Aug. 26, 1997
5573033 Non-drip valve Nov. 12, 1996
5503186 One-way valve panel Apr. 2, 1996
5490385 Valve range Feb. 13, 1996
5456716 Elastomeric valve assembly Oct. 10, 1995
5411552 Valve prothesis for implantation in the body and a catheter for implanting such valve prothesis May. 2, 1995
5405331 IV injection site and system Apr. 11, 1995
5356039 Pump tube and pouch Oct. 18, 1994
5339864 Safety sub for retaining drilling fluids Aug. 23, 1994
5327871 Check valve for internal combustion engine fuel tank filler pipe Jul. 12, 1994
5300033 Introducer assembly and valve construction for use therein Apr. 5, 1994
5300034 Iv injection site for the reception of a blunt cannula Apr. 5, 1994
5248275 Balloon with flat film valve and method of manufacture Sep. 28, 1993
5209264 Check valve May. 11, 1993
5205325 Flow control valve Apr. 27, 1993
5113911 Pressure actuated elastomeric valve May. 19, 1992
4946133 Hemostasis valve Aug. 7, 1990
4932562 Liquid dispensing system Jun. 12, 1990
4872678 Pressurizable game ball Oct. 10, 1989
4829968 Mobile fuel tank vapor emission control system and method May. 16, 1989
4811758 Pressurized check valve Mar. 14, 1989
4708167 Check valve Nov. 24, 1987
4660747 Valve element Apr. 28, 1987

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