Global Patent Index - EP 0404921 B1

EP 0404921 B1 19931110 - ROTOR PAIR FOR A HIGH-PRESSURE SCREW-TYPE COMPRESSOR.

Title (en)

ROTOR PAIR FOR A HIGH-PRESSURE SCREW-TYPE COMPRESSOR.

Title (de)

ROTORPAAR FÜR HOCHDRUCKSCHRAUBENVERDICHTER.

Title (fr)

PAIRE DE ROTORS POUR COMPRESSEUR A VIS HAUTE PRESSION.

Publication

EP 0404921 B1 19931110 (DE)

Application

EP 90901801 A 19900117

Priority

DD 32508889 A 19890117

Abstract (en)

[origin: WO9008261A1] A rotor pair for a high-pressure screw-type compressor comprises a main rotor and an auxiliary rotor. The main rotor has essentially convex teeth arranged outside its reference circle and the auxiliary rotor has essentially concave teeth arranged inside its reference circle. To achieve the aim of the invention, the axial distance which delimits the size of the possible bearings is increased solely by increasing the number of teeth on the auxiliary rotor.

IPC 1-7

F04C 18/16; F01C 1/02; F01C 21/02; F04C 29/00

IPC 8 full level

F01C 1/02 (2006.01); F01C 21/02 (2006.01); F04C 18/16 (2006.01); F04C 29/00 (2006.01)

CPC (source: EP US)

F04C 18/16 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE GB SE

DOCDB simple family (publication)

WO 9008261 A1 19900726; DD 301062 A7 19921001; DE 59003410 D1 19931216; EP 0404921 A1 19910102; EP 0404921 B1 19931110; JP 2812797 B2 19981022; JP H03503307 A 19910725; US 5096399 A 19920317

DOCDB simple family (application)

EP 9000093 W 19900117; DD 32508889 A 19890117; DE 59003410 T 19900117; EP 90901801 A 19900117; JP 50233090 A 19900117; US 55380290 A 19900718