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
Application
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
IPC 8 full level
F04C 2/18 (2006.01); F04C 14/18 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP)
F04C 14/18 (2013.01)
Citation (search report)
- [XY] DE 511495 C 19301030 - VALENTIN RETTERATH
- [XY] BE 443167 A
- [A] GB 1152188 A 19690514 - KUHARA TOZABURO [JP]
- [A] GB 490963 A 19380824 - JOHN BURGOYNE PILLIN
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 A0 20001205; IT TO20001133 A1 20020605
DOCDB simple family (application)
EP 01128459 A 20011205; DE 60131721 T 20011205; ES 01128459 T 20011205; IT TO20001133 A 20001205