F04C 2/12

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9957406 Method for smoothing a perfluoro alkoxy alkane film surfaceMar 04, 15May 01, 18NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY
9926842 Rotary internal combustion engine with exhaust purgeNov 21, 14Mar 27, 18Pratt & Whitney Canada Corp.
9920761 Vacuum pump rotor for a vacuum pump having a roots pumping mechanismDec 14, 15Mar 20, 18EDWARDS LIMITED
9752571 Multiple segment lobe pumpJun 06, 16Sep 05, 17OCOR CORPORATION
9752580 Positive displacement gear pumpSep 23, 14Sep 05, 17G.P.S. GREEN POWER SOLUTION SA
9732749 Rotary piston pump having converging inlet and outlet openings for conveying a fluid medium containing solidsSep 08, 10Aug 15, 17HUGO VOGELSANG MASCHINENBAU GMBH
9732750 Metering pump made of plasticMar 06, 14Aug 15, 17ROBERT BOSCH GMBH
9726221 Gear pump bearings with hybrid padsNov 03, 14Aug 08, 17HAMILTON SUNDSTRAND CORPORATION
9719507 Rotary piston pump having direct driveOct 30, 13Aug 01, 17HUGO VOGELSANG MASCHINENBAU GMBH
9702362 Rotary piston pump and casing half-shells for sameNov 16, 11Jul 11, 17HUGO VOGELSANG MASCHINENBAU GMBH
9617992 Rotary piston pump with optimised inlets and outletsNov 03, 14Apr 11, 17NETZSCH PUMPEN & SYSTEME GMBH
9617995 Rotary piston pump with slip ring seals for improved fitting and synchronization of rotary pistonsAug 06, 14Apr 11, 17NETZSCH PUMPEN & SYSTEME GMBH
9611850 Method and device for fixing and synchronizing rotary pistons in a rotary piston pumpAug 06, 14Apr 04, 17NETZSCH PUMPEN & SYSTEME GMBH
9581155 Self-priming positive displacement constant flow high capacity pumpOct 12, 04Feb 28, 17RECTOR, JOE, RECTOR, JOE DICK,
9488170 Gear pump driven gear pressure loaded bearingJun 06, 14Nov 08, 16HAMILTON SUNDSTRAND CORPORATION
9488171 Gear pump drive gear stationary bearingJun 06, 14Nov 08, 16HAMILTON SUNDSTRAND CORPORATION
9488173 Gear pump drive gear stationary bearingJul 31, 14Nov 08, 16HAMILTON SUNDSTRAND CORPORATION
9488174 Gear pump driven gear stationary bearingJun 06, 14Nov 08, 16HAMILTON SUNDSTRAND CORPORATION
9470228 Multiple segment lobe pumpJun 13, 13Oct 18, 16OCOR CORPORATION
9453506 Gear pump drive gear pressure loaded bearingJun 06, 14Sep 27, 16HAMILTON SUNDSTRAND CORPORATION

Showing 1 to 20 of 37 results