EP 1421281 B1 20080123 - GEAR PUMP
Title (en)
GEAR PUMP
Title (de)
ZAHNRADPUMPE
Title (fr)
POMPE A ENGRENAGE
Publication
Application
Priority
- EP 0208970 W 20020809
- FR 0110879 A 20010816
Abstract (en)
[origin: WO03016720A1] The invention relates to a gear pump that is intended, in particular, for rubber mixtures. The inventive pump comprises a housing (12) containing a rotating gear wheel assembly consisting of a central gear wheel (4) which co-operates with two other peripheral gear wheels (3, 5). Said pump comprises at least one feed chamber containing at least one boost means which drives the material towards the housing (12) by means of at least one flow-through opening (17, 18). Each of the gear wheels (3, 4, 5) is driven directly by a motor torque. In addition, pre-stressing means between the teeth provide a leak-proof contact at the area where the teeth of the central wheel (4) engage with each of the peripheral wheels (3, 5).
IPC 8 full level
F04C 2/14 (2006.01); F04C 2/18 (2006.01); F01C 21/10 (2006.01); F04C 13/00 (2006.01); F04C 15/00 (2006.01); F04C 15/06 (2006.01)
CPC (source: EP US)
F01C 21/102 (2013.01 - EP US); F04C 2/14 (2013.01 - EP US); F04C 13/002 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03016720 A1 20030227; AT E384875 T1 20080215; CN 1320276 C 20070606; CN 1543541 A 20041103; DE 60224811 D1 20080313; DE 60224811 T2 20090122; EP 1421281 A1 20040526; EP 1421281 B1 20080123; FR 2828717 A1 20030221; JP 2005500456 A 20050106; JP 4279139 B2 20090617; US 2004161357 A1 20040819; US 7335005 B2 20080226
DOCDB simple family (application)
EP 0208970 W 20020809; AT 02758458 T 20020809; CN 02815982 A 20020809; DE 60224811 T 20020809; EP 02758458 A 20020809; FR 0110879 A 20010816; JP 2003520986 A 20020809; US 77822404 A 20040217