(19)
(11) EP 1 143 143 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.11.2002 Bulletin 2002/46

(43) Date of publication A2:
10.10.2001 Bulletin 2001/41

(21) Application number: 01108328.4

(22) Date of filing: 02.04.2001
(51) International Patent Classification (IPC)7: F04B 27/08, F04B 39/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 03.04.2000 JP 2000101020
03.04.2000 JP 2000101026

(71) Applicant: Kabushiki Kaisha Toyota Jidoshokki
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Hoshida, Takahiro
    Kariya-shi, Aichi-ken (JP)
  • Enokijima, Fuminobu
    Kariya-shi, Aichi-ken (JP)
  • Kato, Takayuki
    Kariya-shi, Aichi-ken (JP)
  • Takamatsu, Masato
    Kariya-shi, Aichi-ken (JP)
  • Katayama, Seiji
    Kariya-shi, Aichi-ken (JP)
  • Fukushima, Shigeo
    Kariya-shi, Aichi-ken (JP)
  • Kawaguchi, Masahiro
    Kariya-shi, Aichi-ken (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. 
Tiedtke-Bühling-Kinne & Partner GbR, TBK-Patent, Bavariaring 4
80336 München
80336 München (DE)

   


(54) Compressor piston and process for producing the compressor piston


(57) A hollow piston has an end wall that receives pressure in a cylinder bore of a compressor. A reinforcing protrusion is formed on the inner end face of the end wall. The contour of the protrusion, from the radially outside portion toward the radially inside portion, first approaches the outer end face and then departs from the outer end face. Therefore, the piston is light and strong.






Search report