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Class Information
Number: 417/478
Name: Pumps > Expansible chamber type > Inlet and discharge distributors at opposite ends of tubular flexible wall pumping chamber
Description: Apparatus comprising an elongated hollow member having walls thereof formed of flexible material, said member having an inlet valve at one end thereof for controlling flow of fluid into said member and an outlet valve at the opposite end thereof for controlling the flow of fluid out of the member.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8701910 Wine bottle closure apparatus Apr. 22, 2014
8403654 Low fuel permeation primer bulb Mar. 26, 2013
8262424 System and related methods for marine transportation Sep. 11, 2012
8197234 In-line actuator for electromagnetic operation Jun. 12, 2012
8172554 Chemical liquid supplying apparatus May. 8, 2012
8152476 Positive displacement pump with a working fluid and linear motor control Apr. 10, 2012
8137083 Infusion pump actuators, system and method for controlling medical fluid flowrate Mar. 20, 2012
8105056 Aerating bag Jan. 31, 2012
8087910 Chemical liquid supplying apparatus Jan. 3, 2012
8029253 Finger-type peristaltic pump Oct. 4, 2011
7955061 Priming pump for a circuit subjecting said pump to an outlet pressure greater than an inlet pressure Jun. 7, 2011
7900850 Microdosing apparatus and method for dosed dispensing of liquids Mar. 8, 2011
7828176 Fluid dispenser with internal pump Nov. 9, 2010
7547199 Fluid pumping system and related methods Jun. 16, 2009
7484942 Priming pump for a circuit subjecting said pump to an outlet pressure greater than an inlet pressure Feb. 3, 2009
7232524 Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas drive Jun. 19, 2007
7222803 Liquid dispensing apparatus May. 29, 2007
7171992 Pharmaceutical compounder Feb. 6, 2007
7163385 Hydroimpedance pump Jan. 16, 2007
7135246 Electronic apparatus having energy-saving cooling system Nov. 14, 2006
6935846 Dosing pump Aug. 30, 2005
6887047 Pneumatic pinch mechanism for a deformable tube May. 3, 2005
6877965 Mechanical bladder pump Apr. 12, 2005
6869275 Piezoelectrically driven fluids pump and piezoelectric fluid valve Mar. 22, 2005
6814262 Disposable pump and drive mechanism for dispensing a liquid food product Nov. 9, 2004
6733252 Fluid-handling systems and components comprising a bladder pump, a methods therefor May. 11, 2004
6666665 Fluid delivery mechanism having a plurality of plungers for compressing a metering chamber Dec. 23, 2003
6623257 Disposable mechanism for taking out a fixed amount of fluid and system for supplying a fixed amount of fluid Sep. 23, 2003
6619931 Bladder pump for liquid sampling and collecting Sep. 16, 2003
6607368 Linear pump and method Aug. 19, 2003
6585499 Fluid delivery mechanism having a flush-back operation Jul. 1, 2003
RE37983 Air pump Feb. 11, 2003
6464476 Linear pump and method Oct. 15, 2002
6450773 Piezoelectric vacuum pump and method Sep. 17, 2002
6382933 Bladder pump for liquid sampling and collecting May. 7, 2002
6352455 Marine propulsion device Mar. 5, 2002
6305913 Pressure processing a pumpable substance with a flexible membrane Oct. 23, 2001
6302660 Tube pump with flexible tube diaphragm Oct. 16, 2001
6267570 Peristaltic pump Jul. 31, 2001
6258036 Blood pressure inflation bulb with permanently secured intake valve Jul. 10, 2001
6213723 Volumetric infusion pump Apr. 10, 2001
6213738 Volumetric infusion pump Apr. 10, 2001
6213739 Linear peristaltic pump Apr. 10, 2001
RE37074 Pumping device having inlet and outlet valves adjacent opposed sides of a tube deforming device Feb. 27, 2001
6183223 Chemical supply system with a pair of bellows connected in series for pumping a fluid Feb. 6, 2001
6152189 Sampler Nov. 28, 2000
6146109 Infusion device with disposable elements Nov. 14, 2000
6123524 Volumetric infusion pump with automatic tube loader Sep. 26, 2000
6120264 Air pump of simple structure Sep. 19, 2000
6092695 Interchangeable liquid dispensing cartridge pump Jul. 25, 2000

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