EP 1252444 B1 20070815 - DRIVE MECHANISM FOR A SCREW PUMP
Title (en)
DRIVE MECHANISM FOR A SCREW PUMP
Title (de)
ANTRIEB EINER SCHRAUBENSPINDELPUMPE
Title (fr)
SYSTEME D'ENTRAINEMENT DE POMPE A VIS
Publication
Application
Priority
- DE 10004373 A 20000202
- EP 0100320 W 20010112
Abstract (en)
[origin: US6666672B1] The invention concerns a screw pump (10) that is configured as a dual-shaft positive displacement motor and that comprises two positive displacement spindle rotors (1 and 2) rotating in opposite directions and having external toothing. In order to provide a quiet and simple drive mechanism for said rotors (1 and 2) while ensuring synchronization and increased rotational speed, contrate gear-like gearwheels (3 and 4) are mounted on both rotors (1 and 2) rotating in opposite directions or the rotor spindles in a corresponding plane, in which a larger contrate gear-like driving toothed wheel (5) engages in such a way that both spindle rotors (1 and 2) are driven in opposite directions at an increased rotational speed, wherein said contrate gear similarity also includes a crown gear with internal and external toothing working in connection with front toothed wheels or bevel gears and the possibility that only the driving toothed wheel (5) or only the driven gearwheels (3 and 4) are contrate gear-like.
IPC 8 full level
F04C 18/16 (2006.01); F04C 29/00 (2006.01); F04C 25/02 (2006.01)
CPC (source: EP KR US)
F04C 18/16 (2013.01 - EP KR US); F04C 29/005 (2013.01 - EP US); Y10T 74/19079 (2015.01 - EP US); Y10T 74/19088 (2015.01 - EP US); Y10T 74/19647 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0157401 A1 20010809; AT E370333 T1 20070915; AU 3729301 A 20010814; CA 2398263 A1 20010809; DE 10004373 A1 20010809; DE 10004373 B4 20071220; DE 50112863 D1 20070927; EP 1252444 A1 20021030; EP 1252444 B1 20070815; ES 2296732 T3 20080501; JP 2003521637 A 20030715; KR 100749729 B1 20070817; KR 20020071961 A 20020913; US 6666672 B1 20031223
DOCDB simple family (application)
EP 0100320 W 20010112; AT 01909614 T 20010112; AU 3729301 A 20010112; CA 2398263 A 20010112; DE 10004373 A 20000202; DE 50112863 T 20010112; EP 01909614 A 20010112; ES 01909614 T 20010112; JP 2001556015 A 20010112; KR 20027009401 A 20020722; US 18199802 A 20020723