EP 0933530 B1 20040303 - Internal gear pump free from inner crescent space
Title (en)
Internal gear pump free from inner crescent space
Title (de)
Sichellose Innenzahnradpumpe
Title (fr)
Pompe à engrenages internes sans croissant
Publication
Application
Priority
DE 19804134 A 19980203
Abstract (en)
[origin: EP0933530A1] The housing has a suction connection (3.1) and a pressure connection (3.2). The hollow wheel (1) has radial breakthroughs (1.1), which produce a conductive connection between the tooth base and the cover surface of the hollow wheel. In the tooth heads of the hollow wheel and the pinion (2) is a profile groove, in which a sealing component (4) is inserted. The sealing component can slide on the opposing tooth head of the pinion and the hollow wheel. The sealing component is provided with a channel, which produces a conductive connection between the profile groove base and the sealing surface of the sealing component.
IPC 1-7
IPC 8 full level
F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 15/0019 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
EP 0933530 A1 19990804; EP 0933530 B1 20040303; AT E261064 T1 20040315; DE 19804134 A1 19990812; DE 59810908 D1 20040408; DK 0933530 T3 20040705; ES 2221969 T3 20050116; JP H11270466 A 19991005; KR 19990071433 A 19990927; US 6095782 A 20000801
DOCDB simple family (application)
EP 98120951 A 19981105; AT 98120951 T 19981105; DE 19804134 A 19980203; DE 59810908 T 19981105; DK 98120951 T 19981105; ES 98120951 T 19981105; JP 2592499 A 19990203; KR 19980053774 A 19981208; US 23485899 A 19990122