Global Patent Index - EP 1213481 A1

EP 1213481 A1 20020612 - Rotary pump with a variable flow rate, particularly for oil

Title (en)

Rotary pump with a variable flow rate, particularly for oil

Title (de)

Drehkolbenpumpe mit veränderlicher Durchflussmenge, insbesondere für Öl

Title (fr)

Pompe rotative à capacité variable, en particulier pour de l'huile

Publication

EP 1213481 A1 20020612 (EN)

Application

EP 01128459 A 20011205

Priority

IT TO20001133 A 20001205

Abstract (en)

A rotary pump (1) with a variable flow rate, particularly for oil, has a support body (2), with a suction mouth (3), which, in use, is connected to an oil tank, and a delivery mouth (4), which, in use, is connected to a delivery circuit, and accommodates a drive rotor (6) and a driven rotor (7); the rotors (6, 7) can rotate around their own axes (12, 13), in order to convey oil from the suction mouth (3) to the delivery mouth (4), and are each defined by a corresponding set (6, 7) of toothed wheels (10, 11), which are superimposed axially on one another, each of which engages with a corresponding wheel (11, 10) of the other set (7, 6); in use, the sets (6, 7) have a first part of the wheels (A) which can rotate, and a second part of the wheels (B) which is fixed, the axial thicknesses of which sets are variable by means of a regulation unit (25), according to the delivery pressure. <IMAGE>

IPC 1-7

F04C 15/04; F04C 2/18

IPC 8 full level

F04C 15/00 (2006.01); F04C 2/18 (2006.01); F04C 14/18 (2006.01)

CPC (source: EP)

F04C 14/18 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE ES FR GB SE

DOCDB simple family (publication)

EP 1213481 A1 20020612; EP 1213481 B1 20071205; DE 60131721 D1 20080117; DE 60131721 T2 20081106; ES 2296701 T3 20080501; IT TO20001133 A1 20020605; IT TO20001133 D0 20001205

DOCDB simple family (application)

EP 01128459 A 20011205; DE 60131721 T 20011205; ES 01128459 T 20011205; IT TO20001133 A 20001205