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Class Information
Number: 137/847
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Resilient material valve > Having expansible port > Having exit lip > With biasing means
Description: Valve wherein closing of the exit lip is effected or facilitated by an additional force applying means.










Patents under this class:

Patent Number Title Of Patent Date Issued
8561851 Sports bottle with preloaded valve and methods Oct. 22, 2013
8387655 Slurry flow control device Mar. 5, 2013
8365967 Pressure-activated valve Feb. 5, 2013
8286656 Implantable counterpulsation cardiac assist device Oct. 16, 2012
8141587 Duckbill type check valve with curved and resiliently biased closing seal Mar. 27, 2012
7306128 Container closure Dec. 11, 2007
7306127 Container closure Dec. 11, 2007
7240768 Flapper finger valve Jul. 10, 2007
7237572 Check valve Jul. 3, 2007
6899199 Flapper finger valve assembly May. 31, 2005
6719004 Check valve floor drain Apr. 13, 2004
6533254 Carburetor fuel pump Mar. 18, 2003
6367505 Check valve with oversized bill Apr. 9, 2002
6092551 Duckbill valve Jul. 25, 2000
6066117 Cannula flapper valve assembly May. 23, 2000
6056444 Track roller bearing with stud May. 2, 2000
5931197 Asymmetrical check valve Aug. 3, 1999
5924452 Valve assembly Jul. 20, 1999
5823852 Water bag type brassiere padding with a valve Oct. 20, 1998
5820604 Cannula cap including yeildable outer seal and flapper valve Oct. 13, 1998
5727593 Tide gate valve with curvilinear bill Mar. 17, 1998
5620032 Gas nozzle valve Apr. 15, 1997
5606995 Inversion-resistant, readily openable tide gate valve Mar. 4, 1997
5487406 Drain control valve and manifold system Jan. 30, 1996
5324270 Cannula with improved valve and skin seal Jun. 28, 1994
5282314 Method of making a pressure relief value Feb. 1, 1994
5215123 Pressure relief valve Jun. 1, 1993
5193585 Duckbill conservation vent valve Mar. 16, 1993
5137024 Gas flow valve and sphygmomanometer air-feeding/discharging apparatus using the same Aug. 11, 1992
5010925 Normally closed duckbill valve assembly Apr. 30, 1991
4993452 Low pressure check valve Feb. 19, 1991
4710063 Non-return valve for bore hole sleeves Dec. 1, 1987
4709836 Fluid flow nozzle Dec. 1, 1987
4607663 Inversion-resistant, readily-openable tide gate valve Aug. 26, 1986
4585031 Inversion-resistant tide gate valve Apr. 29, 1986
4524805 Normally closed duckbill valve and method of manufacture Jun. 25, 1985
4465102 Check valve Aug. 14, 1984
4436519 Removable hemostasis valve Mar. 13, 1984
4434810 Bi-directional pressure relief valve Mar. 6, 1984
4341239 Combination check-overpressure relief valve Jul. 27, 1982
4245358 Nontraumatic prosthetic valve with magnetic closure Jan. 20, 1981
4030142 Occluder for prosthetic heart valve assembly Jun. 21, 1977











 
 
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