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Patent EP0348591A2 successfully refreshed from Google Patents.
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EP0348591A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Screw type mechanical supercharger

Assignee: Kobe Steel Ltd
•
Filing: 1989-01-25
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Granted: —
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Expires: 2009-01-25
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Abstract

Abstract A screw type mechanical supercharger which is small in size but has a large capacity. The supercharger comprises a pair of female and male screw rotors (1, 2) held in a mutually meshing condition with each other, and a pair of synchronizing gears (3, 4) mounted for integral rotation with the screw rotors and held in meshing engagement with each other to establish synchronous rotation of the female and male screw rotors. The female rotor (1) has six teeth while the male rotor (2) has three teeth, and the synchronizing gear for the female rotor (3) has a number of teeth twice that of the other synchronizing gear (4) for the male rotor. The female rotor is connected to be driven by a reciprocating internal combustion engine so as to serve as an input power shaft of the supercharger. The screw rotors are preferably formed from a lighter weight material.

Inventors

  • 👤 Noboru Tsuboi
  • 👤 Kazuo Kubo
  • 👤 Kunihiko Nishitani

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 04:39
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/14; F04C18/16; F02; F02B; F02B33/00; F02B33/32; F02B33/34; F02B33/36

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 118 words
A screw type mechanical supercharger, comprising a pair of female and male screw rotors held in a mutually meshing condition with each other, and a pair of synchronizing gears mounted for integral rotation with said screw rotors and held in meshing engagement with each other to establish synchronous rotation of said female and male screw rotors, said female rotor having six teeth while said male rotor has three teeth, the synchronizing gear for said female rotor having a number of teeth twice that of the other synchronizing gear for said male rotor, said female rotor being connected to be driven by a reciprocating internal combustion engine so as to serve as an input power shaft of said supercharger.
Claim 2
Dependent Claim 118 words
A screw type mechanical supercharger, comprising a pair of female and male screw rotors held in a mutually meshing condition with each other, and a pair of synchronizing gears mounted for integral rotation with said screw rotors and held in meshing engagement with each other to establish synchronous rotation of said female and male screw rotors, said female rotor having six teeth while said male rotor has three teeth, the synchronizing gear for said female rotor having a number of teeth twice that of the other synchronizing gear for said male rotor, said female rotor being connected to be driven by a reciprocating internal combustion engine so as to serve as an input power shaft of said supercharger.
Claim 3
Dependent Claim 20 words
A screw type mechanical supercharger according to claim 1, wherein said screw rotors are made of a lighter weight material.

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