Global Patent Index - EP 0851980 B1

EP 0851980 B1 2000-01-19 - ROTARY VANE PUMP

Title (en)

ROTARY VANE PUMP

Title (de)

FLÜGELZELLEN PUMPE

Title (fr)

POMPE ROTATIVE A PALETTES

Publication

EP 0851980 B1 (FR)

Application

EP 96931052 A

Priority

  • EP 9603942 W
  • IT TO950737 A

Abstract (en)

[origin: WO9711277A1] A rotary pump including a stator (1) with a bore (11) defined by a cylindrical side wall (113), a cylindrical rotor (2) tangent to the inside of the bore (11) and rotatable about an axis (X) that is off-centre relative to said bore, and two vanes (3, 4) slidably fitted in radial housings (e.g. 25) in the rotor (2) and each provided with two opposite edges (e.g. 31, 32) of which the first (31) engages the side wall (113) of the bore. The rotor (2) is hollow, a cylinder (7) coaxial with the cylindrical wall (113) of the bore fits into the rotor, and each vane selectively engages the cylinder to form in the rotor a compression chamber and an expansion chamber between which passes an oil flow fed through a channel (5) in the bottom wall of the bore and a groove (6) in the rotor.

IPC 1-7 (main, further and additional classification)

F04C 18/344; F04C 29/02

IPC 8 full level (invention and additional information)

F04C 25/02 (2006.01); F01C 21/08 (2006.01); F04C 18/344 (2006.01); F04C 29/02 (2006.01)

CPC (invention and additional information)

F01C 21/0872 (2013.01); F01C 21/0836 (2013.01); F04C 29/02 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family

WO 9711277 A1 19970327; DE 69606315 D1 20000224; DE 69606315 T2 20000518; EP 0851980 A1 19980708; EP 0851980 B1 20000119; ES 2141532 T3 20000316; IT 1281346 B1 19980218; IT TO950737 A1 19970318; IT TO950737 D0 19950918; JP H11512506 A 19991026