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Class Information
Number: 417/307
Name: Pumps > With condition responsive pumped fluid control > Pressure responsive relief or bypass valve
Description: Apparatus in which the fluid flow control means controls a bypass or relief line.










Sub-classes under this class:

Class Number Class Name Patents
417/311 Adjustable spring loaded valve 54
417/308 Having additional relief or bypass valve 99
417/309 Responsive to pump inlet condition 55
417/310 Rotary expansible chamber pump 614


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8678780 Transmission hydraulic control system having a pump bypass valve Mar. 25, 2014
8651828 Vacuum pump with combined debris catcher and pressure relief valve Feb. 18, 2014
8608456 High pressure pump Dec. 17, 2013
8540498 Compressor-expander set critical speed avoidance Sep. 24, 2013
8529220 High-pressure pump Sep. 10, 2013
8485159 High-pressure pump Jul. 16, 2013
8454323 Lubricant valve for oil pumps of internal combustion engines Jun. 4, 2013
8418677 High pressure fuel pump control system for internal combustion engine Apr. 16, 2013
8408888 Scroll compressor having relief ports to open first and second compression chambers Apr. 2, 2013
8366409 Reciprocating pump Feb. 5, 2013
8360746 Inverted pressure regulating valve for an engine oil pump Jan. 29, 2013
8360738 Device for regulating the operating pressure of an oil-injected compressor installation Jan. 29, 2013
8356986 Compressor Jan. 22, 2013
8348635 Variable displacement gear pump Jan. 8, 2013
8313311 Adjustable unloader valve Nov. 20, 2012
8303265 Hydraulic pump Nov. 6, 2012
8297942 Regulatable coolant pump Oct. 30, 2012
8297947 Fluid disc pump Oct. 30, 2012
8297941 Fuel pump Oct. 30, 2012
8297307 Relief valve structure Oct. 30, 2012
8292597 High-speed gear pump Oct. 23, 2012
8215923 Clutch control system and method for operating a clutch control system Jul. 10, 2012
8206131 Fuel pump Jun. 26, 2012
8202065 High pressure fuel pump Jun. 19, 2012
8192176 Hydraulic fluid supply system having active regulator Jun. 5, 2012
8186970 Scroll compressor including a fixed scroll and a orbiting scroll May. 29, 2012
8177522 Mode changing apparatus for a scroll compressor May. 15, 2012
8152482 Displacement control valve for variable displacement compressor Apr. 10, 2012
8152496 Continuing compressor operation through redundant algorithms Apr. 10, 2012
8100645 Axial flow impeller Jan. 24, 2012
8070462 High-pressure fuel pump Dec. 6, 2011
8057193 Screw compressor comprising a relief valve Nov. 15, 2011
8029248 Integrated coolant pumping module Oct. 4, 2011
8020399 High pressure mister fan cooling system Sep. 20, 2011
7967582 Compressor having capacity modulation system Jun. 28, 2011
7967583 Compressor having capacity modulation system Jun. 28, 2011
7967580 Oil pump for an internal combustion engine Jun. 28, 2011
7950905 Radial piston fuel supply pump May. 31, 2011
7931453 Capacity variable device for rotary compressor and driving method of air conditioner having the same Apr. 26, 2011
7878769 Automatic transmission pump-priming device Feb. 1, 2011
RE41861 Decoupled check-relief valve Oct. 26, 2010
7793683 Active intake pressure control of downhole pump assemblies Sep. 14, 2010
7758317 Method of analyzing vaporization pattern of solvent and solvent vacuum vaporization device Jul. 20, 2010
7726951 Fuel control module Jun. 1, 2010
7677263 Tandem pump valve structure Mar. 16, 2010
7677872 Low back-flow pulsation fuel injection pump Mar. 16, 2010
7621727 Automobile compressor piston Nov. 24, 2009
7585160 Hermetic compressor Sep. 8, 2009
7556479 Power steering pump relief system filter Jul. 7, 2009
7553134 Switch valve structure of fluid machine Jun. 30, 2009

1 2 3 4 5 6










 
 
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