EP 0520943 B1 19950823 - Positive displacement pump.
Title (en)
Positive displacement pump.
Title (de)
Verdrängungspumpe.
Title (fr)
Pompe à déplacement positif.
Publication
Application
Priority
CH 185191 A 19910622
Abstract (en)
[origin: EP0520943A1] In a positive displacement pump for incompressible fluids, which has two spiral-shaped discharge chambers (6) which lead from an inlet (2) outside the spiral to an outlet (3) inside the spiral, one spiral-shaped displacement body (5) each, which is arranged on a disk (4) and which projects into the discharge chamber (6), with a looping angle of 360 DEG is supported so as to perform a circular, torsion-free movement. The pressure in the outlet is kept constant in that the spring-supported (13) disk (4) with the displacement bodies (5) lifts from its sealing position as soon as the back pressure exceeds a predefined value. <IMAGE>
IPC 1-7
IPC 8 full level
F04C 2/02 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP)
F04C 2/025 (2013.01); F04C 15/0023 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0520943 A1 19921230; EP 0520943 B1 19950823; CH 683552 A5 19940331; DE 59203356 D1 19950928
DOCDB simple family (application)
EP 92810442 A 19920610; CH 185191 A 19910622; DE 59203356 T 19920610