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Class Information
Number: 417/490
Name: Pumps > Expansible chamber type > Pumping member position controlled port
Description: Apparatus in which the supply or discharge of pump fluid to or from the pump chamber is by way of a port which is controlled by opening or closing same upon movement (reciprocatory or rotary) of the pumping member relative to the pump chamber; said port being either (1) formed in a pump chamber wall (e.g., cylinder) and opened or closed directly by the pumping member (e.g., piston) or element integral with or movably carried thereby or, (2) formed in the pumping member and opened or closed directly by a pump chamber wall or element integral with or movably carried thereby.

Sub-classes under this class:

Class Number Class Name Patents
417/491 Common pumping member controls inlet or discharge for plural chambers 15
417/500 Control by movement of pumping member about axis 96
417/501 Having coextensive distributor opposite pumping member end face 33
417/499 Having means to effect control at different positions of pumping member stroke 110
417/496 Having serial control of inlet or discharge flow path 5
417/493 Including plural controlled inlet or outlet flow paths 29
417/498 Longitudinally spaced inlet and discharge sidewall ports 32
417/497 Pumping member controlled end wall port 9

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8591207 Pump with side inlet valve for improved functioning in an inverted container Nov. 26, 2013
8333567 Viscous fluid pump and related methods Dec. 18, 2012
8241019 Pump element and pump having such a pump element Aug. 14, 2012
8235689 Piston pump with rotating pump actuator Aug. 7, 2012
8157548 Supply pump, in particular for supplying diesel fuel, with improved bearing of the drive shaft Apr. 17, 2012
8096789 Simplified cleaning and filling device with a piston Jan. 17, 2012
7905853 Dialysis system having integrated pneumatic manifold Mar. 15, 2011
7841920 Crying toy dolls Nov. 30, 2010
7661936 Piston pump with slot-controlled inlet valve Feb. 16, 2010
7621726 Metering pump Nov. 24, 2009
7544051 Cam-driven fluid pump Jun. 9, 2009
7374019 Method of and device for lubricating rolling bearings May. 20, 2008
7354255 Piston vibratory pump Apr. 8, 2008
7287967 High-pressure pump having small initial axial force of a clamping bolt Oct. 30, 2007
7121810 High-pressure pump having small initial axial force of a clamping bolt Oct. 17, 2006
7033143 Pumping system with clutch and associated by-pass Apr. 25, 2006
7025323 Low power integrated pumping and valving arrays for microfluidic systems Apr. 11, 2006
6986651 Pump priming apparatus Jan. 17, 2006
6968815 Actuating device for securing a camshaft of an engine of a motor vehicle in a start position Nov. 29, 2005
6843641 Radial piston pump Jan. 18, 2005
6749402 Nutating pump, control system and method of control thereof Jun. 15, 2004
6733256 Device for producing consumables May. 11, 2004
6719542 Pump for printing press Apr. 13, 2004
6651630 High pressure fuel pump Nov. 25, 2003
6517331 Oil inlet for a wobble plate pump Feb. 11, 2003
6517330 Reciprocating pump Feb. 11, 2003
6461117 Reversible volume oil pump Oct. 8, 2002
6398513 Fluid dispensers Jun. 4, 2002
6394772 Oil transfer pump May. 28, 2002
6354820 Pump Mar. 12, 2002
6336443 Injection pump Jan. 8, 2002
6332761 Radial piston pump for high pressure fuel delivery Dec. 25, 2001
6299419 Reciprocating diaphragm pump with packless piston-cylinder unit Oct. 9, 2001
6171070 High-pressure reciprocating pumps Jan. 9, 2001
6152708 Fuel injection pump for an internal combustion engine Nov. 28, 2000
6116870 High pressure pump with solenoid operated valve Sep. 12, 2000
5951259 Reciprocating pump with improved primer element and method Sep. 14, 1999
5779454 Combined pressure surge fuel pump and nozzle assembly Jul. 14, 1998
5775885 Combination suction manifold and cylinder block for a reciprocating compressor Jul. 7, 1998
5741126 Valveless metering pump with crisscrossed passage ways in the piston Apr. 21, 1998
5711615 Antifriction bearing Jan. 27, 1998
5662023 Replaceable cylinder piston assembly for a lubricator pump Sep. 2, 1997
5645406 Transmission assembly with positive-displacement pump with suction throttle driven by a hydrodynamic converter Jul. 8, 1997
5567134 High-pressure fuel-feed pump Oct. 22, 1996
5562428 Fuel injection pump having an adjustable inlet poppet valve Oct. 8, 1996
5556263 Volumetric pump and value Sep. 17, 1996
5538407 Proportioner and fluid proportioning system Jul. 23, 1996
5538407 Proportioner and fluid proportioning system Jul. 23, 1996
5527164 Positive-displacement pump with inlet float chamber Jun. 18, 1996
5522710 Flowthrough manifold assembly for a linear pump Jun. 4, 1996

1 2 3

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