| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 02/07/1978 | US4072451 Power transmission |
| 02/07/1978 | US4072450 Pump assembly |
| 12/27/1977 | US4065235 Gear pump |
| 12/06/1977 | US4061450 Positive displacement vane type rotary pump |
| 12/06/1977 | US4061446 Rotary air pump or compressor with flexible end sealing plates |
| 11/29/1977 | US4060342 Vane assembly for rotary compressor |
| 11/22/1977 | US4059165 Versatile fluid motor and pump |
| 11/08/1977 | US4057375 Pump structure |
| 11/01/1977 | US4056337 External gear type fluid displacing machine with bearing gap |
| 10/04/1977 | US4051910 Two way earth boring fluid motor |
| 09/27/1977 | US4050855 Dry air rotary pump or compressor |
| 09/13/1977 | US4047859 Axial vane pump with non-rotating vanes |
| 08/09/1977 | US4040607 Method of building up pressure by multi-shaft screw extruders |
| 07/26/1977 | US4038000 Gear machine with bearing cooling and lubrication |
| 07/19/1977 | US4036540 Screw extruder housing |
| 07/19/1977 | US4036073 Elliptic gear wheel |
| 07/12/1977 | US4035115 Vane pump |
| 07/12/1977 | US4035113 Gerotor device with lubricant system |
| 06/28/1977 | US4032267 Gerotor motor with a stationary inner member and a rotating and orbiting outer member |
| 06/21/1977 | US4030862 Helical gear pump and method of manufacturing the same |
| 06/14/1977 | US4029443 Progressing cavity pump |
| 06/07/1977 | US4028027 Screw housing for a screw machine |
| 06/07/1977 | US4028025 Screw pump |
| 05/24/1977 | US4025243 Orbital device |
| 05/24/1977 | US4025056 Mixing apparatus |
| 05/03/1977 | US4021161 Rotary fluid pressure device and thrust absorbing arrangement therefor |
| 05/03/1977 | US4021159 Housing formation for a rotary piston machine of trochoidal construction with an outer envelope curve |
| 04/26/1977 | US4019840 Positive displacement vane type rotary pump |
| 04/19/1977 | US4018549 Screw pump |
| 04/12/1977 | USRE29180 Moineau pump with rotating outer member |
| 04/12/1977 | US4017224 Gear machine with cutouts in the shaft journals |
| 04/12/1977 | US4017223 Axial thrust adjustment for dual screw-type pump |
| 04/12/1977 | US4017222 Pump for use in a paint application apparatus |
| 04/05/1977 | US4015828 Injection of additives into liquid streams |
| 03/22/1977 | US4013388 Support means for floating rotary ring member |
| 03/15/1977 | US4012183 Rotary vane compressor with vane extension means |
| 03/08/1977 | US4011033 Positive displacement vane type rotary pump |
| 03/01/1977 | US4009973 Seal for hydraulic pumps and motors |
| 02/22/1977 | US4008987 Combined timing gear and pump for rotary mechanisms |
| 02/15/1977 | US4008019 Rotary pump with pivoted flap engaging a bladed rotor |
| 02/15/1977 | US4008018 Rotary fluid displacement device having improved porting |
| 02/15/1977 | US4008015 Rotor-stator gear set |
| 02/15/1977 | US4008002 Vane pump with speed responsive check plate deflection |
| 02/01/1977 | US4005953 Piston of a rotary piston engine of trochoid type, having an internal seal |
| 02/01/1977 | US4005952 Gear pump |
| 02/01/1977 | US4005951 Rotary vane engine with orbiting inner and outer members |
| 01/25/1977 | US4004866 Gerotor device with valve compensating means |
| 12/07/1976 | US3995978 Hydraulic fluid pressure device and porting arrangement therefor |
| 12/07/1976 | US3995977 Vane pump housing |
| 12/07/1976 | US3995975 Gear pump |
| 11/30/1976 | US3994636 Axial compliance means with radial sealing for scroll-type apparatus |
| 11/30/1976 | US3994635 Scroll member and scroll-type apparatus incorporating the same |
| 11/09/1976 | US3990819 Seals for rotary mechanisms |
| 11/02/1976 | US3989426 Vane pump |
| 11/02/1976 | US3989422 Displacement machine for compressible media |
| 11/02/1976 | US3989418 Fluid pump for use in explosive bore holes |
| 10/19/1976 | US3987473 Electromagnetic focal plane shutter |
| 10/19/1976 | US3986800 Gear type pump or motor with radial balancing |
| 10/19/1976 | US3986799 Fluid-cooled, scroll-type, positive fluid displacement apparatus |
| 09/21/1976 | US3981648 Power transmission |
| 09/21/1976 | US3981646 Gear pumps and motors |
| 09/21/1976 | US3981638 Rotary piston machine |
| 08/17/1976 | USRE28933 Hydraulic torque motor |
| 08/17/1976 | US3975124 Gear motor with valve controlled pressure biased end seals for facilitatng starting of the gear motor |
| 08/17/1976 | US3975121 Wafer elements for progressing cavity stators |
| 08/10/1976 | US3973881 Vane-type pump or motor with undervane fluid bias |
| 08/10/1976 | US3973880 Drive connection means for a hydraulic device |
| 07/20/1976 | US3970113 Bimetal multiple cylinder for extruders in plastics processing machinery |
| 07/20/1976 | US3969940 Fluid flow meter |
| 06/29/1976 | US3966370 Rotary piston machine for transporting liquid or gaseous media |
| 06/29/1976 | US3966369 Inlet and outlet ports and sealing means for a fluid driven motor |
| 06/29/1976 | US3966367 Hydraulic motor or pump with movable wedge |
| 06/22/1976 | US3964844 Vane pump |
| 06/22/1976 | US3964842 Hydraulic device |
| 06/08/1976 | US3961872 Gear machine with fluid-biased end face sealing elements |
| 06/08/1976 | US3961870 Gear pump or motor with radial balancing |
| 06/01/1976 | US3960470 Hydraulic motor brake |
| 05/18/1976 | US3957404 Vanes for fluid power converter |
| 04/27/1976 | US3953160 Gear pumps and motors |
| 04/20/1976 | US3951576 Rotary diaphragm pump |
| 04/20/1976 | US3951575 Controlled output gear pump and motor |
| 04/20/1976 | US3951097 Hydraulic motor or pump |
| 04/06/1976 | US3948590 Axially centering means for fluid machines |
| 03/30/1976 | US3947163 Screw rotor machine with axially balanced hollow thread rotor |
| 03/23/1976 | US3945779 Bearings for the trunnions of gears in gear pumps or the like |
| 03/16/1976 | US3944378 Rotary fluid displacement apparatus with orbiting toothed ring member |
| 03/09/1976 | US3942920 Rotary fluid pumps |
| 03/02/1976 | US3941525 Internal seal for the piston of a rotary piston engine |
| 02/17/1976 | US3938915 Screw rotor machine with hollow thread rotor enclosing a screw cam rotor |
| 02/17/1976 | US3938744 Positive displacement rotary pump and drive coupling therefor |
| 01/13/1976 | US3932302 Foam generator |
| 01/13/1976 | US3932072 Moineau pump with rotating outer member |
| 01/06/1976 | US3930766 Radial balancing means for a hydraulic device |
| 01/06/1976 | US3930765 Rotary displacement pumps |
| 01/06/1976 | US3930763 Rotary cell pump for the conveying of sausage stuffing and the like |
| 01/06/1976 | US3930757 Pressure equalizing pump |