EP 0835381 A1 19980415 - FLUID PUMP
Title (en)
FLUID PUMP
Title (de)
FLUIDPUMPE
Title (fr)
POMPE A FLUIDE
Publication
Application
Priority
- DE 19546570 A 19951213
- EP 9605382 W 19961203
Abstract (en)
[origin: US6109889A] PCT No. PCT/EP96/05382 Sec. 371 Date Jun. 3, 1998 Sec. 102(e) Date Jun. 3, 1998 PCT Filed Dec. 3, 1996 PCT Pub. No. WO97/21924 PCT Pub. Date Jun. 19, 1997A fluid pump has a pump body and a displacer, the displacer and the pump body being implemented such that a pump chamber is defined therebetween, the pump chamber having an inlet opening and an outlet opening, neither the inlet opening nor the outlet opening being provided with a check valve. A drive means is provided which positions the displacer periodically at a first and at a second end position. The displacer closes the outlet opening when it occupies its first end position and leaves the outlet opening free when it occupies its second end position and leaves the inlet opening free at both end positions thereof. The displacer, when moving from the first to the second end position, defines a flow-through gap which opens between the displacer and the pump body in the area of the outlet opening in dependence upon the movement, the flow-through gap being defined such that the flow through the outlet opening depends on the pressure in the pump chamber as well as on the respective opening degree of the flow-through gap.
IPC 1-7
IPC 8 full level
F04B 43/00 (2006.01); F04B 43/04 (2006.01)
CPC (source: EP US)
F04B 43/046 (2013.01 - EP US)
Citation (search report)
See references of WO 9721924A1
Designated contracting state (EPC)
AT CH DE FR GB LI
DOCDB simple family (publication)
US 6109889 A 20000829; AT E176715 T1 19990215; DE 19546570 C1 19970327; DE 59601301 D1 19990325; EP 0835381 A1 19980415; EP 0835381 B1 19990210; WO 9721924 A1 19970619
DOCDB simple family (application)
US 9103098 A 19980603; AT 96943027 T 19961203; DE 19546570 A 19951213; DE 59601301 T 19961203; EP 9605382 W 19961203; EP 96943027 A 19961203