Global Patent Index - EP 0848165 A3

EP 0848165 A3 19990818 - Internal gear pump

Title (en)

Internal gear pump

Title (de)

Füllstücklose Innenzahnradmaschine

Title (fr)

Pompe à engrenages internes

Publication

EP 0848165 A3 19990818 (DE)

Application

EP 97121424 A 19971205

Priority

DE 19651683 A 19961212

Abstract (en)

[origin: US6074189A] A filling member-less internal-gear unit has a casing with a bearing ring which is accommodated movably in a bore in the casing transversely with respect to its axis but non-rotatably. An internally toothed annular gear is rotatably mounted in the bearing ring and meshes with a pinion rotatably mounted in the casing. The bearing ring is pivotable relative to the bore in the casing about a pivot axis parallel to its axis. The pivot axis is so disposed that the ring portion of the bearing ring, which is associated with the engagement-free annular gear region, is moved at least approximately radially towards the pinion axis by the hydraulic pressure forces acting on the annular gear in the pressure chamber.

IPC 1-7

F04C 2/10

IPC 8 full level

F04C 2/10 (2006.01); F04C 14/18 (2006.01); F04C 14/20 (2006.01); F04C 15/00 (2006.01)

CPC (source: EP KR US)

F04C 2/102 (2013.01 - EP KR US); F04C 15/0019 (2013.01 - EP KR US); F04C 15/0026 (2013.01 - EP KR US)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

US 6074189 A 20000613; AT E206183 T1 20011015; DE 19651683 A1 19980618; DE 29703656 U1 19970515; DE 59704716 D1 20011031; EP 0848165 A2 19980617; EP 0848165 A3 19990818; EP 0848165 B1 20010926; JP 3323432 B2 20020909; JP H10281079 A 19981020; KR 100325593 B1 20020708; KR 19980064065 A 19981007

DOCDB simple family (application)

US 98700197 A 19971208; AT 97121424 T 19971205; DE 19651683 A 19961212; DE 29703656 U 19970228; DE 59704716 T 19971205; EP 97121424 A 19971205; JP 34257197 A 19971212; KR 19970068064 A 19971212