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Class Information
Number: 417/460
Name: Pumps > Expansible chamber type > Moving cylinder
Description: Apparatus in which the expansible chamber pump comprises a cylinder having a piston (includes diaphragm) movable therein and in which incident to the operation of the pump, the cylinder has an absolute movement.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621723 |
Electromagnetic pump |
Nov. 24, 2009 |
| 7255071 |
Supercharged two-stroke engine with upper piston extensions |
Aug. 14, 2007 |
| 6986651 |
Pump priming apparatus |
Jan. 17, 2006 |
| 6966283 |
Apparatus with piston having upper piston extensions |
Nov. 22, 2005 |
| 6955531 |
Pump for inflating and deflating an inflatable object with a rotatable nozzle assembly |
Oct. 18, 2005 |
| 6793471 |
Fluid machine |
Sep. 21, 2004 |
| 6755628 |
Valve body for a traveling barrel pump |
Jun. 29, 2004 |
| 6514055 |
Piston pump having a hollow piston |
Feb. 4, 2003 |
| 6368084 |
Downstroke sucker rod well pump |
Apr. 9, 2002 |
| 6364639 |
Pump |
Apr. 2, 2002 |
| 6358023 |
Moment pump |
Mar. 19, 2002 |
| 6267161 |
Carbon-dioxide pump for tires |
Jul. 31, 2001 |
| 6224347 |
Low volume, high precision, positive displacement pump |
May. 1, 2001 |
| 6200055 |
Dispenser device for dispensing metered doses of viscous material |
Mar. 13, 2001 |
| 6102676 |
Pump |
Aug. 15, 2000 |
| 5921759 |
Liquid metering piston pump and valves capable of being cleaned and sterilized without disassembly |
Jul. 13, 1999 |
| 5651302 |
Actuator pump |
Jul. 29, 1997 |
| 5593288 |
Liquefied gas pump |
Jan. 14, 1997 |
| 5529463 |
Pumping apparatus for perfusion and other fluid catheterization procedures |
Jun. 25, 1996 |
| 5316454 |
Fluid pump and rotary machine having said fluid pump |
May. 31, 1994 |
| 5080196 |
Lubricating system and pump |
Jan. 14, 1992 |
| 4998866 |
Precision liquid handling apparatus |
Mar. 12, 1991 |
| 4830588 |
Capillary primed pump |
May. 16, 1989 |
| 4822254 |
Oscillating cylinder pumping arrangement |
Apr. 18, 1989 |
| 4758131 |
Apparatus for displacing high viscous substances |
Jul. 19, 1988 |
| 4739904 |
Dispenser pump |
Apr. 26, 1988 |
| 4722263 |
Portable hydraulic pump |
Feb. 2, 1988 |
| 4586881 |
Machine having integral piston and cylinder wall sections |
May. 6, 1986 |
| 4527460 |
Radial piston machine |
Jul. 9, 1985 |
| 4478561 |
Hydraulic intensifier |
Oct. 23, 1984 |
| 4462767 |
Air pump |
Jul. 31, 1984 |
| 4439115 |
Manure transfer system having a pull pump |
Mar. 27, 1984 |
| 4431387 |
Hermetic refrigeration rotary motor-compressor |
Feb. 14, 1984 |
| 4280798 |
Work machine |
Jul. 28, 1981 |
| 4278114 |
Kitchen appliance for storing perishable goods |
Jul. 14, 1981 |
| 4274327 |
Expansible chamber device |
Jun. 23, 1981 |
| 4272228 |
High volume dispensing pump |
Jun. 9, 1981 |
| 4207806 |
Miniature volumetric pump |
Jun. 17, 1980 |
| 4195440 |
Fluid suction device |
Apr. 1, 1980 |
| 4044745 |
Injector pump |
Aug. 30, 1977 |
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