EP 0911524 B1 20030326 - Internal gear pump
Title (en)
Internal gear pump
Title (de)
Sichellose Innenzahnradmaschine
Title (fr)
Pompe à engrenages internes
Publication
Application
Priority
DE 19746769 A 19971023
Abstract (en)
[origin: DE19746769C1] The pump or motor (10) has a casing (11) with a drive (12) having an inner toothed hollow rotor (13) and a pinion defining tooth spacings containing pressurised fluid. A seal (19) scraper (19) has a pressure face (35) opposing the pinion, made from two faces (36,37). Both faces can have different angle of inclination with respect to the axis of the seal. The angle of inclination (W3) defines a tangent (T) which lies on the contact plane of the sealing edge of the seal scraper on the gear tooth, to which the moment of both changing phases of the drive is greater than the angle of inclination (W1.W2) of both flanks.
IPC 1-7
IPC 8 full level
F01C 21/08 (2006.01); F04C 2/08 (2006.01); F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP)
F01C 21/0809 (2013.01); F04C 2/084 (2013.01); F04C 15/0019 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19746769 C1 19990211; DE 59807629 D1 20030430; EP 0911524 A1 19990428; EP 0911524 B1 20030326
DOCDB simple family (application)
DE 19746769 A 19971023; DE 59807629 T 19981001; EP 98118622 A 19981001