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Class Information
Number: 137/493.8
Name: Fluid handling > Line condition change responsive valves > Bi-directional flow valves > Axes of ports parallel
Description: Apparatus wherein the axis of one valve port is parallel to the axis of the second valve port. See the definition of valve port under subclass 493.7.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8672364 Quick disconnect device for connecting a sprayer tank to a portable pump assembly Mar. 18, 2014
8667985 Pressure relief valve and vent assembly Mar. 11, 2014
8657590 Hydraulic power steering system with charging valve and air cushion in the tank Feb. 25, 2014
8602053 Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing Dec. 10, 2013
8602054 Valve assembly for a differential pressure sensor with safety valve Dec. 10, 2013
8555915 Dual action low head isolation valve Oct. 15, 2013
8528591 Micro valve, method for producing a micro valve, as well as micro pump Sep. 10, 2013
8381758 Safety relief fill valve assembly Feb. 26, 2013
8267162 Bi-directional pressure relief valve for a plate fin heat exchanger Sep. 18, 2012
8230878 Reversible flow valve assembly Jul. 31, 2012
8141577 Liquid filled pressure/vacuum valve for petroleum underground storage tanks Mar. 27, 2012
8109285 Roll over vent valve Feb. 7, 2012
8091583 Double check valve for a fuel system Jan. 10, 2012
8074678 Reversible flow valve assembly Dec. 13, 2011
8066030 Fuel conveying device Nov. 29, 2011
7757704 Coupling assembly with a core unit therein Jul. 20, 2010
7487647 Expansion valve and method for controlling it Feb. 10, 2009
7445020 Relief valve assembly Nov. 4, 2008
7383855 Sanitary tank vent valve Jun. 10, 2008
7363940 Flow-rate restrictor insert for orifice expansion device Apr. 29, 2008
7320334 Valve Assembly Jan. 22, 2008
7296586 Gas-regulating unit for regulating a gas pressure in a gas-tight tank Nov. 20, 2007
7207350 Pressure valve Apr. 24, 2007
7096883 Combined check/pressure control valve Aug. 29, 2006
7080659 Damper valve and hydraulic power steering apparatus using the same Jul. 25, 2006
6729345 Sealing valve arrangement May. 4, 2004
6629621 Gauge hatch with liquid seal Oct. 7, 2003
6612321 Damping valve for power steering Sep. 2, 2003
6604544 Safety valve of tank for storing and carrying oil or chemical substance Aug. 12, 2003
6568415 Storing device for easily polymerizable and coagulating liquid substance and method for pressure control thereof May. 27, 2003
6561211 Fuel tank vent control valve May. 13, 2003
6546727 Hydraulic system Apr. 15, 2003
6543473 Damper valve and a hydraulic power steering device using the same Apr. 8, 2003
RE37989 Pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere Feb. 18, 2003
6470909 Hydraulic system Oct. 29, 2002
6457613 Container equipped with protective seal Oct. 1, 2002
6408913 Device for inflating and deflating a tire inner tube, inner tube and wheel formed by a tire and a rim inside which the inner tube is arranged Jun. 25, 2002
6405750 Disk pack valve assembly for a hydraulic circuit Jun. 18, 2002
6401755 Damping valve Jun. 11, 2002
6305412 Double acting pressure relief valve with low pressure seal Oct. 23, 2001
6305413 Mixing adaptor system Oct. 23, 2001
6298873 Two-way check valve Oct. 9, 2001
6263907 Valve device of a storage tank for transporting oils or chemical compounds Jul. 24, 2001
6234190 Mixing adaptor with rupturable membrane May. 22, 2001
6234196 Mixing adaptor and system May. 22, 2001
6231323 High pressure reciprocating pump May. 15, 2001
6182687 Pressure-dependent valve for a vibration damper Feb. 6, 2001
6168400 Check valve module Jan. 2, 2001
6164320 Damper valve for hydraulic power steering device Dec. 26, 2000
6148853 Damper valve for hydraulic power steering device Nov. 21, 2000

1 2 3

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