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Class Information
Number: 137/533.19
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Weight biased > Valve body is the weight > Guided head > Cage
Description: Devices in which the valve head is guided by means stationary with respect to the seat and engagable with the outer periphery of the valve head.

Patents under this class:

Patent Number Title Of Patent Date Issued
8485258 Use of autonomous (self-adjusting) valves in injectors in oil production Jul. 16, 2013
8453673 Valve cage for a pump Jun. 4, 2013
8402999 Liquid dispensing tap, in particular for liquids with higher density Mar. 26, 2013
8328543 Contoured check valve disc and scroll compressor incorporating same Dec. 11, 2012
8141573 Microfluidic valve having free-floating member and method of fabrication Mar. 27, 2012
7766035 Fluid jet for providing fluid under pressure to a desired location Aug. 3, 2010
7721752 Pressure relief valve for a packaging container May. 25, 2010
7708026 Fluid jet with noise reducing sleeve May. 4, 2010
7600533 Microfluidic valve having free-floating member and method of fabrication Oct. 13, 2009
7506663 Magnetic check valve Mar. 24, 2009
7370668 Valve for winterizing a pool May. 13, 2008
7367356 Oil flow control valve for a cam phaser May. 6, 2008
7353842 Air fitting with an integral check valve Apr. 8, 2008
7270146 Air vent valve Sep. 18, 2007
7237569 Ball check valve Jul. 3, 2007
7204268 Internal pressure equilibrium device for airtight space Apr. 17, 2007
7152623 Fluid jet for providing fluid under pressure to a desired location Dec. 26, 2006
7150376 Double-layered fluid container Dec. 19, 2006
7104277 Valve for controlling a tank internal gas pressure Sep. 12, 2006
7056105 Unit utilizing current to control reciprocation for pushing fluids Jun. 6, 2006
6971404 Pressure protection valve Dec. 6, 2005
6877524 Valve for winterizing a pool Apr. 12, 2005
6840270 Low deviation pressure relief valve for fuel pumps Jan. 11, 2005
6712591 Discharge valve of a hermetic compressor using stopper and weight driven disc valve Mar. 30, 2004
6685451 Valve assembly for sucker rod operated subsurface pumps Feb. 3, 2004
6382230 Ball valve May. 7, 2002
6065948 Discharge check valve in a scroll compressor May. 23, 2000
5992442 Relief valve for use with hermetically sealed flexible container Nov. 30, 1999
5971015 Check valve Oct. 26, 1999
5967180 Check valve Oct. 19, 1999
5853162 Electromagnetic control valve responsive to positive and negative pressures Dec. 29, 1998
5785083 Tubular refrigerant check valve with snap-together internal valve cage structure Jul. 28, 1998
5680881 Valve system for hermetic reciprocating compressor Oct. 28, 1997
5653258 Vent valve Aug. 5, 1997
5249597 Digestor tank having a pressure relief valve Oct. 5, 1993
5195552 Check valve with exchangeable valving elements Mar. 23, 1993
4966535 Non-return valve for admitting a liquid to be sprayed into a pump chamber, and utilization thereof Oct. 30, 1990
4936846 Pannus formation preventing heart valve Jun. 26, 1990
4907616 Check valve assembly Mar. 13, 1990
4679777 Hydraulic-elastomeric mount displacement decoupler Jul. 14, 1987
4531543 Uni-directional flow, fluid valve Jul. 30, 1985
4391295 Hot water system and valve Jul. 5, 1983
4369808 Disc-type check valve Jan. 25, 1983
4275759 Closure member Jun. 30, 1981
4100935 Check valve for heat pump systems Jul. 18, 1978

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