EP 2868927 A1 20150506 - MULTISTAGE OIL PUMP
Title (en)
MULTISTAGE OIL PUMP
Title (de)
MEHRSTUFIGE ÖLPUMPE
Title (fr)
POMPE À HUILE À ÉTAGES MULTIPLES
Publication
Application
Priority
- JP 2012113479 A 20120517
- JP 2013063649 W 20130516
Abstract (en)
With conventional multistage oil pumps, all the components are formed of a ferrous material, and thus there have been presented a problem that the weight is large. With a multistage oil pump 1, rotors 6, 7 are connected in series. With a rotor case 2, a first rotor case 41 and a second rotor case 42 are connected in the axial direction, and the inside thereof is partitioned by a spacer 5. The first rotor case 41 and the second rotor case 42 are jointed to the spacer 5 with dowel pins 8. The rotors 6, 7 are formed of a ferrous material, while the spacer 5 being formed of an aluminum-based material.
IPC 8 full level
F04C 15/00 (2006.01); F01C 21/10 (2006.01); F04C 2/10 (2006.01); F04C 11/00 (2006.01); F04C 15/06 (2006.01)
CPC (source: CN EP US)
F01C 21/108 (2013.01 - CN EP US); F04C 2/102 (2013.01 - CN EP US); F04C 2/103 (2013.01 - US); F04C 11/001 (2013.01 - CN EP US); F04C 11/003 (2013.01 - US); F04C 15/0065 (2013.01 - US); F04C 15/06 (2013.01 - CN EP US); F04C 2240/30 (2013.01 - CN EP US); F05C 2201/021 (2013.01 - CN EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2868927 A1 20150506; EP 2868927 A4 20160309; CN 104302918 A 20150121; JP 2013238209 A 20131128; JP 6027768 B2 20161116; US 2015118087 A1 20150430; WO 2013172409 A1 20131121
DOCDB simple family (application)
EP 13791598 A 20130516; CN 201380025650 A 20130516; JP 2012113479 A 20120517; JP 2013063649 W 20130516; US 201314401596 A 20130516