EP 2151542 A3 20111214 - Rotating piston pump with pockets for lubricant
Title (en)
Rotating piston pump with pockets for lubricant
Title (de)
Rotationskolbenpumpe mit Taschen für Schmiermittel
Title (fr)
Pompe à piston rotatif dotée de sacs pour lubrifiants
Publication
Application
Priority
DE 102008036273 A 20080804
Abstract (en)
[origin: EP2151542A2] The pump has a rotor rotatable around a rotation axis (R) in a chamber (4) of a housing (1). The rotor exhibits a sliding surface (15) at a side, where the surface forms a sliding pairing with another sliding surface (16) of the chamber. A pocket is formed in one of the surfaces for lubricants. The pocket is limited with respect to the rotation axis in a circumferential direction and radially outside by the former surface. The pocket is formed such that a hydrodynamic lubricating film is developed between the surfaces by the rotating rotor. The rotor is made of sintered steel or plastic.
IPC 8 full level
F01C 21/08 (2006.01); F04C 18/344 (2006.01); F04C 29/02 (2006.01)
CPC (source: EP)
F01C 21/0809 (2013.01); F04C 18/3441 (2013.01); F04C 29/02 (2013.01); F04C 2240/54 (2013.01)
Citation (search report)
- [XI] GB 2012874 A 19790801 - SEIKO INSTR & ELECTRONICS
- [XI] DE 3014519 A1 19811022 - SKF KUGELLAGERFABRIKEN GMBH [DE]
- [XDI] JP H1068393 A 19980310 - MIKUNI KOGYO KK
- [XI] US 4402653 A 19830906 - MARUYAMA TERUO [JP], et al
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2151542 A2 20100210; EP 2151542 A3 20111214; EP 2151542 B1 20150708; DE 102008036273 A1 20100211; DE 102008036273 B4 20130926
DOCDB simple family (application)
EP 09166834 A 20090730; DE 102008036273 A 20080804