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Class Information
Number: 417/271
Name: Pumps > Three or more cylinders arranged in parallel, radial, or conical relationship with rotary transmission axis > Motor driven
Description: Apparatus in which the pump is driven by a motor.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7585158 |
Piston engine comprising a pulsation-reducing device |
Sep. 8, 2009 |
| 7448858 |
Pump aggregate |
Nov. 11, 2008 |
| 7377754 |
Compressor |
May. 27, 2008 |
| 7047867 |
Oscillating device for adjusting the displacement of a fluid pump |
May. 23, 2006 |
| 6863505 |
Wind driven high pressure water pump |
Mar. 8, 2005 |
| 6776589 |
Reciprocating piston compressor having improved noise attenuation |
Aug. 17, 2004 |
| 6565329 |
Electric type swash plate compressor |
May. 20, 2003 |
| 6554583 |
Swash plate compressor with reciprocal guide assembly |
Apr. 29, 2003 |
| 6524084 |
Motor pump unit |
Feb. 25, 2003 |
| 6499962 |
Bearing arrangement for a swash plate pump |
Dec. 31, 2002 |
| 6481985 |
Maximizing the load torque in a swash plate compressor |
Nov. 19, 2002 |
| 6092455 |
Hydraulic pressure transformer |
Jul. 25, 2000 |
| 6078118 |
Electric motor-pump assembly |
Jun. 20, 2000 |
| 6056515 |
Hydrocleaning machine with pump mounting closure lid |
May. 2, 2000 |
| 5957667 |
Oilless compressor with a pressurizable crankcase and motor containment vessel |
Sep. 28, 1999 |
| 5877577 |
Electric hydraulic hybrid motor, control device and control method for the same motor |
Mar. 2, 1999 |
| 5755562 |
Thrust reduction plate for an axial piston fuel pump |
May. 26, 1998 |
| 5741124 |
Double insulated electrically driven water pump |
Apr. 21, 1998 |
| 5601417 |
Hydraulic pump with ball bearing pistons |
Feb. 11, 1997 |
| 5591013 |
Fluid pressure generating device |
Jan. 7, 1997 |
| 5511956 |
High pressure fuel pump for internal combustion engine |
Apr. 30, 1996 |
| 5450987 |
Pumping system with failure responsive discharge valve |
Sep. 19, 1995 |
| 5380168 |
Axial multi-piston compressor having rotary valve for allowing residual part of compressed fluid to escape |
Jan. 10, 1995 |
| 5366351 |
Pump with failure responsive discharge valve |
Nov. 22, 1994 |
| 5332371 |
Hydraulic system |
Jul. 26, 1994 |
| 5326231 |
Gas compressor construction and assembly |
Jul. 5, 1994 |
| 5281104 |
Sequential displacement piston pump |
Jan. 25, 1994 |
| 5220225 |
Integrated electric motor driven inline hydraulic apparatus |
Jun. 15, 1993 |
| 5209190 |
Rotary power device |
May. 11, 1993 |
| 5117633 |
Pneumohydraulic actuator |
Jun. 2, 1992 |
| 5062772 |
Slant plate type compressor |
Nov. 5, 1991 |
| 5052898 |
Bent axis compressor |
Oct. 1, 1991 |
| 4984970 |
Arrangements on coned rings which are applicable in high pressure pumps and related devices |
Jan. 15, 1991 |
| 4983100 |
Radial piston pump |
Jan. 8, 1991 |
| 4971523 |
Dual diaphragm apparatus with diaphragm assembly and rupture detection methods |
Nov. 20, 1990 |
| 4915594 |
Improved compressor crankshaft |
Apr. 10, 1990 |
| 4907950 |
Variable positive fluid displacement system |
Mar. 13, 1990 |
| 4886024 |
Rotary piston engine |
Dec. 12, 1989 |
| 4850825 |
Radial piston pump |
Jul. 25, 1989 |
| 4850812 |
Integrated motor pump combination |
Jul. 25, 1989 |
| 4802826 |
Sealed, self-contained, liquid-cooled, gas compressor |
Feb. 7, 1989 |
| 4799654 |
Fluid flow facilitating arrangement which includes a coned ring |
Jan. 24, 1989 |
| 4792287 |
Wobble driven axial piston pump |
Dec. 20, 1988 |
| 4787828 |
Power transmission |
Nov. 29, 1988 |
| 4776768 |
Radial plunger pump driven by a motor having seal members for protecting the motor from exposure to working fluid |
Oct. 11, 1988 |
| 4776769 |
System for removing material with a high velocity jet of working fluid |
Oct. 11, 1988 |
| 4763472 |
Power transfer unit |
Aug. 16, 1988 |
| 4758134 |
Radial piston machine |
Jul. 19, 1988 |
| 4752192 |
Rotating drum pump having a plurality of fluid driven pistons |
Jun. 21, 1988 |
| 4734013 |
Rotary pressure intensifier |
Mar. 29, 1988 |
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