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Class Information
Number: 137/516.11
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Single head, plural ports in parallel
Description: Valves wherein a single valve head controls a plurality of ports in a single seat, whereby the flow is subjected to an action of dividing and recombining by its flow through the seat member.










Sub-classes under this class:

Class Number Class Name Patents
137/516.15 Annular head 52
137/516.13 Concentric ports 38


Patents under this class:

Patent Number Title Of Patent Date Issued
8662105 Suction valve with unloader Mar. 4, 2014
8413277 Pneumatic lift with unidirectional valve Apr. 9, 2013
8375994 Valve for electronic enclosure Feb. 19, 2013
8281805 Automatic suction and pressure valve Oct. 9, 2012
7850437 Multi-port suction reed valve with optimized tips Dec. 14, 2010
6532988 Air admittance valve for sanitary waste pipe system Mar. 18, 2003
6116272 Debris resistant oil pressure relief valve Sep. 12, 2000
5823226 Automatic variable-demand flow regulator Oct. 20, 1998
5769117 Guard and seat assembly, and a guard structure therefor Jun. 23, 1998
5577901 Compressor with valve unit for controlling suction and discharge of fluid Nov. 26, 1996
5566869 Arm supported drinking container Oct. 22, 1996
5452737 Proportional fluid blending device for blending two or more gases or liquids Sep. 26, 1995
5445870 Method of producing overpressure valve for packaging containers Aug. 29, 1995
5035261 Pump and valve apparatus Jul. 30, 1991
4948349 Pump and valve apparatus Aug. 14, 1990
4945946 Valve seat for a plate-type, fluid-control valve Aug. 7, 1990
4901757 One way valve Feb. 20, 1990
4852608 Fluid control valve Aug. 1, 1989
4846372 Dispenser for paste compositions Jul. 11, 1989
4846379 Nozzle assembly for a liquid dispensing machine Jul. 11, 1989
4756334 Check-valve assembly, in particular for a pressurized water reactor Jul. 12, 1988
4733690 Hydraulic valve Mar. 29, 1988
4702272 Valve device for increasing the fuel economy and reducing the emissions from an internal combustion engine Oct. 27, 1987
4645043 Hydraulic damper of adjustable damping force type Feb. 24, 1987
4645044 Hydraulic damper of adjustable damping force type Feb. 24, 1987
4599081 Artificial heart valve Jul. 8, 1986
4574835 Valve component Mar. 11, 1986
4570666 Unidirectional, fluid control valve Feb. 18, 1986
4562013 Carbonator valve Dec. 31, 1985
4513784 Check valve assembly Apr. 30, 1985
4444219 Overpressure valve for packages with flexible walls Apr. 24, 1984
4369022 Valve assembly for hydraulically actuated downhole pumps Jan. 18, 1983
4325680 Valve system for encapsulated motor-compressor units Apr. 20, 1982
4314596 Retention device for capturing a spent thermal fuse Feb. 9, 1982
4299250 Check and regulator valve Nov. 10, 1981
4249566 Fluid pressure-operated valves Feb. 10, 1981
4168722 Feather valve Sep. 25, 1979
4161996 Exhaust muffler Jul. 24, 1979
4130131 Compressor valve Dec. 19, 1978
4099540 Two-way bypass valve Jul. 11, 1978
4021058 Safety bag device for vehicle May. 3, 1977
3980097 Fire hydrant with drain valve and backflow preventer mechanism Sep. 14, 1976
3973587 Check valve assembly Aug. 10, 1976
3952766 Backflow preventer Apr. 27, 1976











 
 
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