EP 1039135 A3 20011219 - Internal gear pump with sealings incorporated in the teeth
Title (en)
Internal gear pump with sealings incorporated in the teeth
Title (de)
Sichellose Innenzahnradpumpe mit in die Zahnköpfe eingesetzten Dichtelementen
Title (fr)
Pompe à engrenages internes avec joint d'étanchéité incorporé dans les dents
Publication
Application
Priority
DE 19913752 A 19990326
Abstract (en)
[origin: EP1039135A2] The pump has an internal geared hollow wheel (6) with a meshing pinion (5) in a housing (1). Each tooth tip (14) of the wheel has a profiled groove for a sealing element (30) for sliding seal with the tooth tips of the pinion. The sealing elements are of metal, esp. of steel.
IPC 1-7
IPC 8 full level
F04C 2/08 (2006.01); F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP)
F04C 2/084 (2013.01); F04C 2/102 (2013.01); F04C 15/0019 (2013.01)
Citation (search report)
- [XY] DE 4140293 A1 19930609
- [Y] US 2790394 A 19570430 - MORI ERNEST A
- [DA] DE 4104397 A1 19910912 - VOITH GMBH J M [DE]
- [A] US 4618317 A 19861021 - MATSUZAKI MICHIYOSHI [JP]
- [A] US 4180188 A 19791225 - AKAO TAKESHI [JP], et al
- [A] FR 1373473 A 19640925 - GOETZEWERKE
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1039135 A2 20000927; EP 1039135 A3 20011219; KR 20000062610 A 20001025
DOCDB simple family (application)
EP 99124717 A 19991211; KR 20000008807 A 20000223