Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 2 - Rotary-piston machines or pumps
Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
11/2000
11/28/2000US6152719 Gear pump having an inlet port aligned with the drive shaft
11/28/2000US6152718 Positive-displacement piston mechanism having a rotary piston structure
11/28/2000US6152717 Internal gear pumps
11/28/2000US6152716 Vane pump
11/28/2000US6152715 Pressure clamped hydraulic pump
11/28/2000US6152711 Roller vane pump having a suction port through the cam ring
11/23/2000WO2000070228A1 Toothed rotor set
11/23/2000DE19922792A1 Geared pump rotor assembly e.g. for lubricating oil on internal combustion engine, comprises planet gears in outer ring round star-shaped rotor
11/23/2000DE10022758A1 Hydraulic motor arrangement with brake unit for take-off shaft has motor with stator and rotor and wobble shaft, and ring-shaped brake discs around take-off shaft
11/23/2000DE10012429A1 Electric motor with vibration damping e.g. for power steering system in vehicle, has tubular sprung pins arranged in engagement with stator and base to prevent transfer of vibrations or oscillations between stator and base
11/22/2000EP1053400A1 Hydraulic motor lubrication path
11/22/2000EP1053360A1 Extrusion pump
11/22/2000EP0845080B1 Outlet pressure control for internal gear pump
11/22/2000CN1058647C Machine and method for forming arched roof vertical wall self supporting metal buildings and building constructions
11/21/2000US6149416 Hydraulic machine
11/21/2000US6149415 Internal gear pump having a feed groove aligned with the roots of the idler teeth
11/21/2000US6149410 Reversible gerotor pump having magnetic attraction between the rotor and the reversing ring
11/21/2000US6149409 Cartridge vane pump with dual side fluid feed and single side inlet
11/21/2000US6149391 Hydraulic displacement machine
11/21/2000CA2228678C Method and apparatus for making herringbone gears and pumps incorporating the same
11/16/2000DE10003735A1 Mechanical hydraulic pump has meshing gear wheels with asymmetric gear tooth edges to reduce pulsation in the output pressure
11/15/2000CN2406086Y Pump-cover built-in inlaid type machine-oil pump
11/14/2000US6146575 Apparatus and method for plasticization and extrusion employing an orbital scroll
11/14/2000US6146121 Rotor for use in a rotary pump
11/14/2000US6146118 Oldham coupling for a scroll compressor
11/09/2000WO2000066886A1 Rotary positive-displacement scavenging device for rotary vane pumping machine
11/09/2000WO2000019067B1 Lubrication system for hydraulic pumps
11/08/2000EP1049876A1 Gear pump
11/08/2000CN2405042Y Pump with multiple vane
11/08/2000CN2405041Y Oil transportation pump
11/07/2000US6142757 Integral oil pump
11/07/2000US6142750 Gear pump and replaceable reservoir for a fluid sprayer
11/02/2000DE19918234A1 Lubricant oil pump for IC engine has housing an cover connected positively via jointing surfaces and adhesive
11/02/2000DE19917593A1 Hydraulische Verdrängermaschine Hydraulic displacement
11/01/2000CN1271805A Oil pump device of engine
10/2000
10/31/2000US6139297 Double worm system
10/31/2000US6139295 Bearing lubrication system for a scroll compressor
10/31/2000US6139294 Stepped annular intermediate pressure chamber for axial compliance in a scroll compressor
10/31/2000US6139285 Hydraulic pump for power steering system
10/30/2000CA2270648A1 Blade pump
10/26/2000WO2000063533A1 Vacuum pump oil distribution system with integral oil pump
10/26/2000DE19929952C1 Oil pump toothed wheel used in I.C. engines is made of a powdered spray-compacted super-eutectic aluminum-silicon alloy
10/26/2000CA2367483A1 Vacuum pump oil distribution system with integral oil pump
10/25/2000EP1046819A2 Positive displacement hydraulic machine
10/25/2000EP1046456A1 Method of manufacturing pin holding ring for internal gear, internally meshed planetary gear structure, and hydraulic motor and pump
10/25/2000CN2402834Y Moving plate rotor high-pressure pump
10/25/2000CN2402833Y Equation type cavity vane rotor pump
10/25/2000CN1271059A Gearred pump
10/24/2000US6135742 Eccentric-type vane pump
10/24/2000US6135741 Recirculating flow path for gear pump
10/24/2000US6135723 Efficient Multistage pump
10/19/2000WO2000061947A1 Dual path hydraulic pump
10/19/2000DE19915784A1 Gear pump used for medical purposes has channel on inner side of base or cover plate facing intermeshing gearwheels and acting as flow passage between suction chamber and pressure chamber
10/19/2000DE19915623A1 Rotary piston machine used with drilling equipment has intermediate piston mounted on same shaft as primary pistons and on same axis, and has two-sided curvilinear working faces and inclined working ports
10/18/2000EP1045147A2 Two speed gerotor motor
10/18/2000EP1044332A1 Series for compressed air motors with torque which can be theoretically output in a varied manner and a method for producing the individual compressed air motors of said series
10/18/2000EP1044331A1 Line of products for gear pumps having different delivery capacity and method for producing said individual gear pumps of said line of products
10/18/2000EP0707686B1 Hydraulic gearwheel machine (pump or engine) in particular internal-gearwheel machine
10/18/2000CN1270283A Two speed motor with external chamber circulation
10/17/2000US6132194 Low cost compact design integral brake
10/12/2000DE19915739A1 Mengenregelbare Flügelzellenpumpe A volume-controllable vane pump
10/12/2000DE19915738A1 Mengenregelbare Flügelzellenpumpe A volume-controllable vane pump
10/11/2000EP1043504A2 Vane pump with capacity control
10/11/2000EP1043503A2 Vane pump with capacity control
10/10/2000US6129533 Sealing system for rotating component of a pump
10/05/2000DE19914167A1 Internal-tooth gear wheel fluid supply pump, with play leveling in drive region
10/04/2000EP1041286A2 Scroll compressor with reverse rotation prevention
10/04/2000EP1040275A2 Method of making stators for moineau pumps
10/04/2000CN1268651A Heat pump having noise proof function
10/03/2000US6126424 Transistion valving for gerotor motors
10/03/2000US6126420 Infinitely variable ring gear pump
10/03/2000US6126039 Method and apparatus for accurately dispensing liquids and solids
10/03/2000CA2167545C Worm pump for flowable media
09/2000
09/28/2000WO2000057062A1 Pump for generating pressure or negative pressure
09/28/2000WO2000057028A1 Spherical positive-displacement rotary machine
09/28/2000WO2000056512A1 Laminar polyolefine plastic material recycling installation
09/28/2000WO2000019067A3 Lubrication system for hydraulic pumps
09/27/2000EP1039135A2 Internal gear pump with sealings incorporated in the teeth
09/27/2000EP0954678A4 Hydraulic vane pump with flexible band control
09/27/2000CN2398445Y Shuttle-valve hot oil pump
09/27/2000CN2398444Y Improved fuel-injection machine gear pump
09/26/2000US6123533 Cavitation-free gear pump
09/26/2000US6123532 Vane pump having a pressure plate which is concave when unloaded
09/26/2000US6123531 Bearing arrangement for a pump shaft of a pump for delivering media of different viscosities
09/21/2000WO2000055505A1 Comminuting pump
09/21/2000WO2000043673B1 Efficient multistage pump
09/20/2000EP0682740B1 Sliding vane machine
09/19/2000US6120270 Vane cell pump
09/19/2000US6120267 Progressing cavity pump including a stator modified to improve material handling capability
09/19/2000US6120256 Variable displacement pump
09/14/2000DE19840791A1 Vane cell pump/motor is without defined suction and pressure sides for 4-quadrant operation
09/13/2000EP1035327A2 Vane pump
09/13/2000CN2396210Y Cover postpositive machine oil pump
09/13/2000CN2396209Y Inserted machine oil pump
09/13/2000CN2396208Y High-concentration sludge rotor pump
09/12/2000US6116878 Oil pump apparatus
09/12/2000US6116877 Gear pump for use in an electrically-operated sealed compressor
09/12/2000US6116860 Scroll compressor
09/12/2000US6116859 Pressure operated by-pass valve disposed in the cover of a feed pump for reverse flow
09/08/2000WO2000052339A1 Hydraulic vane motor
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