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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 |
| 7306127 |
Container closure |
Dec. 11, 2007 |
| 7306128 |
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 |
| 4709836 |
Fluid flow nozzle |
Dec. 1, 1987 |
| 4710063 |
Non-return valve for bore hole sleeves |
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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