| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 04/28/1994 | DE4341394A1 Hydraulic motor/pump - has slides, rotating with hub while in constant contact with it and has eccentric shaft and cage rings |
| 04/26/1994 | US5306127 Fluid pump with axially adjustable gears |
| 04/26/1994 | US5305923 Postmix beverage dispensing system |
| 04/20/1994 | CN2162546Y 卫生型转子泵 Sanitary rotor pump |
| 04/19/1994 | US5304049 For handling fluid |
| 04/19/1994 | US5303559 Method and apparatus for refrigerant recovery |
| 04/14/1994 | WO1994008139A1 Hydraulic pump/motor |
| 04/13/1994 | EP0591979A1 Screw rotor toth profile |
| 04/07/1994 | DE4304208C1 Vane cell pump - has blades consisting of carrier and blade section, carrier is guided by stationary parts during movement in radial direction |
| 04/06/1994 | EP0590777A1 Magnetic driving mechanism for a pump having a flushing and cooling arrangement |
| 04/05/1994 | US5299923 Internal gear pump |
| 04/05/1994 | US5299922 Positive displacement rotary pump |
| 04/03/1994 | CA2079729A1 Grooved pump chamber walls for flushing fiber deposits |
| 03/31/1994 | WO1994007030A1 Gear pump with controlled clamping force |
| 03/29/1994 | US5297945 Pump for viscous fluids |
| 03/29/1994 | US5297866 Apparatus for producing a controllable uniform conveying pressure for processing highly viscous rubber or thermoplastics |
| 03/24/1994 | DE4310211A1 Hydraulic gear pump or motor with main gear pair (5) - has second compensation gear pair (5) with continuously meshing tooth pair(s) |
| 03/23/1994 | EP0587803A1 Postmix beverage dispensing system |
| 03/22/1994 | US5295788 Rotor assembly for screw pump |
| 03/17/1994 | WO1994005912A1 Vane cell machine |
| 03/16/1994 | EP0587010A1 Modular motor |
| 03/03/1994 | WO1994004824A1 Compact gerotor pump |
| 03/02/1994 | CN2158000Y Multi-function pump |
| 03/01/1994 | US5290155 Power steering pump with balanced porting |
| 02/24/1994 | DE4227301A1 Delivery unit for supply fuel from tank to IC engine of motor vehicle - has delivery set which includes internal gear pump driven by electric motor with its set of gears rotating in gear chamber formed by ring type plates. |
| 02/23/1994 | EP0583262A1 Device and process using a worm conveyor for separating materials, in particular solid or coagulated materials, from liquids and/or for concentrating solutions. |
| 02/17/1994 | WO1994003730A1 Pair of conveyor worms for rotary positive-displacement pumps |
| 02/17/1994 | CA2141455A1 Pair of conveyor worms for rotary positive-displacement pumps |
| 02/16/1994 | CN2156317Y Single blade type intermediate and high pressure paddle pump |
| 02/16/1994 | CN2156316Y Hydraulic optical cable cream feeding machine |
| 02/09/1994 | EP0582413A1 Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
| 02/08/1994 | US5284424 Osmotic water purification pumping system with flush valve |
| 02/02/1994 | CN2154923Y Wear-less gear pump |
| 01/26/1994 | EP0579981A1 Internal gear pump for hydraulic fluids |
| 01/26/1994 | CN1081237A 流体变压器 Transformer fluid |
| 01/26/1994 | CN1081127A Machine and method for forming arched roof vertical wall self supporting metal buildings and building constructions |
| 01/25/1994 | US5281086 Pump for viscous fluids |
| 01/20/1994 | WO1994001679A1 Hydraulic motor |
| 01/19/1994 | EP0579117A1 Variable displacement hydrostatic device and neutral return mechanism therefor |
| 01/18/1994 | US5279206 Variable displacement hydrostatic device and neutral return mechanism therefor |
| 01/13/1994 | DE4222336A1 Clutch coupling for holding vehicle on slope - has spring loaded catches to give creeping lock effect by engaging teeth |
| 01/13/1994 | DE4220554A1 Fuel conveyor from fuel tank to vehicle IC engine - has flexible seal laid across pump gear by system pressure to fasten stator plate |
| 01/12/1994 | EP0578533A1 Vane pump for foodstuffs |
| 01/12/1994 | EP0577935A1 Pump |
| 01/11/1994 | US5277565 Rotary pump with simplified pump housing |
| 01/05/1994 | EP0577064A1 Rotary pump |
| 01/05/1994 | EP0577062A1 Oil pump made of aluminum alloys |
| 01/05/1994 | CN2152098Y Swing line oil pump |
| 12/29/1993 | CN2151279Y Rotary piston machine with sliding vane |
| 12/28/1993 | US5273411 Rotary positive displacement hydraulic machines |
| 12/28/1993 | US5273408 Variable-displacement vane pump |
| 12/22/1993 | CN2150365Y Stabilized-pressure hydraulic pump without vibration mark |
| 12/22/1993 | CN1079804A Multifunction pump |
| 12/21/1993 | US5271723 Engine driven oil pump |
| 12/21/1993 | CA1325359C Trochoid pump |
| 12/16/1993 | DE4218855A1 Rotary piston pump for fluids containing abrasive solids - uses rotary pistons with peripheral profiled layers in form of waves or teeth |
| 12/15/1993 | EP0403599B1 Scroll fluid device provided with synchronizing and unloading means |
| 12/15/1993 | CN2149497Y Mini Cycloidal electric oil pump |
| 12/14/1993 | US5269663 Electric pump for the circulation of a liquid, for example in an internal-combustion engine |
| 12/14/1993 | CA2001611C Lubrication of gear pump trunnions |
| 12/08/1993 | EP0572867A1 Toothed belt pump |
| 12/08/1993 | CN2148837Y Steering power-assisted pump |
| 12/08/1993 | CN2148836Y 齿轮泵 Gear pumps |
| 12/08/1993 | CN2148835Y Three-screw arbor oil pump |
| 12/07/1993 | US5267840 Power steering pump with balanced porting |
| 11/30/1993 | US5266018 Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
| 11/25/1993 | WO1993023327A1 Product ratio identification system for beverage dispenser |
| 11/25/1993 | DE4217160A1 Gear pump or motor with side sealing bushes - has triangular blind holes in bushes to reduction noise created by pulsation effects |
| 11/25/1993 | CA2118232A1 Product ratio identification system for beverage dispenser |
| 11/24/1993 | EP0570700A1 Process for production of a gear for an internal gear pump |
| 11/23/1993 | US5263829 Magnetic drive mechanism for a pump having a flushing and cooling arrangement |
| 11/23/1993 | US5263818 Pump for pumping fluid without vacuum boiling |
| 11/22/1993 | CA2096718A1 Process for the manufacture of a gear wheel in an internal geared wheel pump |
| 11/18/1993 | EP0569725A1 Gear machine (pump or motor) |
| 11/17/1993 | CN2146586Y Hydraulic rotating pump |
| 11/17/1993 | CN2146585Y Petroleum pump |
| 11/16/1993 | US5261803 Gerotor pump with interference fit closure |
| 11/16/1993 | US5261796 Electric-motor in-line integrated hydraulic pump |
| 11/16/1993 | CA1324291C Rotary vane oil pump and method of operating |
| 11/11/1993 | DE4218385A1 Displacement pump for fluids containing solid particles - uses divider slider working against disc with curved face surface |
| 11/11/1993 | DE4214752A1 Pump, esp. for oil - comprises two-part plastic housing including cover and stator enclosing pair of abrasion resistant rotors |
| 11/09/1993 | US5259741 Rotary drainage pump lubrication device and separator |
| 11/03/1993 | EP0568493A2 Internal axis rotary piston machine |
| 11/03/1993 | EP0542759A4 A multi-chamber rotary lobe fluid machine with positive sliding seals |
| 11/02/1993 | US5257919 Dual revolving vane meter-motor-pump |
| 10/28/1993 | WO1993021443A1 Variable output internal pump |
| 10/28/1993 | WO1993021424A1 Variable displacement pump |
| 10/28/1993 | DE4213330A1 Noise-damped vane cell pump - uses interconnection channels between pump chambers tuned to interference frequency |
| 10/26/1993 | US5256043 Vane pump having improved vane sealing |
| 10/20/1993 | CN2144200Y Cycloidal teeth-shaped internal and external rotors for rotary pump |
| 10/13/1993 | EP0565340A1 Variable output internal pump |
| 10/13/1993 | CN2143678Y Wortex flow liquid machinery with self-turning-proof mechanism |
| 10/13/1993 | CN1077254A Multi-function variable vane pump and motor |
| 10/13/1993 | CN1077245A Shell-rotating double-action variable vane motor |
| 10/12/1993 | US5252047 Gear pump with controlled clamping force |
| 10/06/1993 | EP0563661A1 Internal gear pump with radially movable sealing elements for radial compensation |
| 10/06/1993 | EP0563435A1 Rotary drainage pump lubrication device and separator |
| 10/05/1993 | US5249942 Oil pump |
| 10/05/1993 | US5249445 Machine and method for forming arched roof vertical wall self supporting metal buildings |
| 09/30/1993 | WO1993019310A1 Vehicle drivetrain hydraulic coupling |