EP 2189658 B1 20171122 - Fluid Pump Assembly
Title (en)
Fluid Pump Assembly
Title (de)
Flüssigkeitspumpenanordnung
Title (fr)
Ensemble de pompe à fluide
Publication
Application
Priority
EP 08169804 A 20081124
Abstract (en)
[origin: EP2189658A1] A fluid pump assembly comprising a driven cam (18) and a reciprocating member (26, 28; 126, 226, 326; 32, 34) reciprocal within a bore provided in a pump housing (12, 30) as the cam (18) is driven, in use, to cause pressurisation of fluid within a pump chamber (33, 35). The pump assembly further comprises interface means (26a, 18c) between the cam (18) and the reciprocating member, preferably in the form of bevelled surfaces (18c, 26a, 28a; 32a, 34a) of the cam and the reciprocating member, which serve to drive the reciprocating member (26, 28) (i) to translate in a first, axial direction within the bore and (ii) to rotate within the bore in a second, rotational direction. A preferred feature of the fluid pump assembly is that the pump housing (12, 30) defines a bearing (22) for the cam (18) which is provided with a region of weakness (50) to allow the bearing (22) to deflect, in use, thereby to provide an increased lubrication volume between the cam and the bearing (22). The reciprocating member may take the form of a tappet (26, 28) which cooperates with a pumping plunger to pressurise fluid within the pump chamber (33, 35).
IPC 8 full level
F04B 1/04 (2006.01); F02M 59/10 (2006.01); F04B 1/12 (2006.01); F04B 1/32 (2006.01); F04B 9/04 (2006.01)
CPC (source: EP US)
F02M 59/102 (2013.01 - EP US); F04B 1/0426 (2013.01 - EP US); F04B 1/12 (2013.01 - EP US); F04B 1/326 (2013.01 - EP US); F04B 9/042 (2013.01 - EP US)
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 MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2189658 A1 20100526; EP 2189658 B1 20171122; JP 2010133402 A 20100617; JP 5108858 B2 20121226; US 2010129246 A1 20100527
DOCDB simple family (application)
EP 08169804 A 20081124; JP 2009257148 A 20091110; US 61546709 A 20091110