EP 0377617 B1 19910918 - GEARWHEEL MOTOR
Title (en)
GEARWHEEL MOTOR
Publication
Application
Priority
- DE 8712245 U 19870910
- DE 8806388 U 19880514
Abstract (en)
[origin: WO8902515A1] A gearwheel motor has two mutually engaged externally toothed wheels (14, 15) against the side surfaces of which is pressed a sealing plate (26) by means of two approximately concentric compression fields (A, B). The two compression fields do not communicate with each other. The pressure of one compression field (B) can be controlled by means of an electro-magnetically driven control valve (41), thus changing the compression force of the sealing plate (26) on the toothed wheels. When the gearwheel motor is started, the compression force must be low, so that the starting resistance may also be low. Under high pressures, the compression force is increased by closing the valve, avoiding oil leakage along the toothed wheels from the high pressure to the low pressure side.
IPC 1-7
IPC 8 full level
F01C 1/14 (2006.01); F03C 2/08 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 15/0026 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 8806388 U1 19890112; DE 3865019 D1 19911024; EP 0377617 A1 19900718; EP 0377617 B1 19910918; JP H03500194 A 19910117; US 5052905 A 19911001; WO 8902515 A1 19890323
DOCDB simple family (application)
DE 8806388 U 19880514; DE 3865019 T 19880902; DE 8800541 W 19880902; EP 88907605 A 19880902; JP 50712488 A 19880902; US 49065990 A 19900312