EP 0866225 B1 20010704 - Internal gear pump without crescent filling piece with sealing elements inserted in the tooth heads
Title (en)
Internal gear pump without crescent filling piece with sealing elements inserted in the tooth heads
Title (de)
Sichellose Innenzahnradpumpe mit in den Zahnköpfen eingesetzten Dichtelementen
Title (fr)
Pompe à engrenages internes avec de segments d'étanchéité inserés dans les têtes des dents
Publication
Application
Priority
DE 19712169 A 19970322
Abstract (en)
[origin: DE19712169C1] The pump comprises teeth which are formed on the inside of an annulus and on a pinion meshing with it. The two rotate in a common housing with suction and pressure unions, and radial ports are provided in the annulus for the passage of the medium handled. The crowns of the annulus teeth contain dovetail-section grooves (34) accommodating seals (30) sliding in the radial direction and working against the crowns of the pinion teeth. One or more lengthwise grooves (52-54) are machined in the mating faces of the dovetail-section grooves and-or seals.
IPC 1-7
IPC 8 full level
F04C 2/10 (2006.01)
CPC (source: EP US)
F04C 2/102 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
DE 19712169 C1 19980312; DE 59800951 D1 20010809; DK 0866225 T3 20011015; EP 0866225 A1 19980923; EP 0866225 B1 20010704; ES 2159160 T3 20010916; JP H10266974 A 19981006; TW 411984 U 20001111; US 6093006 A 20000725
DOCDB simple family (application)
DE 19712169 A 19970322; DE 59800951 T 19980129; DK 98101501 T 19980129; EP 98101501 A 19980129; ES 98101501 T 19980129; JP 7260198 A 19980320; TW 88218981 U 19980320; US 4126198 A 19980312