(19)
(11) EP 0 959 227 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.08.2000 Bulletin 2000/35

(43) Date of publication A2:
24.11.1999 Bulletin 1999/47

(21) Application number: 99109847.6

(22) Date of filing: 19.05.1999
(51) International Patent Classification (IPC)7: F01B 3/00, F04B 27/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.05.1998 JP 13853998
08.12.1998 JP 34841998

(71) Applicant: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Aichi-ken (JP)

(72) Inventors:
  • Kato, Takayuki, c/o Toyoda Jidoshokki Seisakusho
    Kariya-shi, Aichi-ken (JP)
  • Sugioka, Takahiro, c/o Toyoda Jidoshokki Seisakus.
    Kariya-shi, Aichi-ken (JP)
  • Takamatsu, Masato, c/o Toyoda Jidoshokki Seisakus.
    Kariya-shi, Aichi-ken (JP)
  • Sekiguchi, Tsunehisa
    Niwa-gun, Aichi-ken (JP)
  • Ando, Masaki
    Niwa-gun, Aichi-ken (JP)

(74) Representative: Pellmann, Hans-Bernd, Dipl.-Ing. et al
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Piston and method of manufacture


(57) A method for manufacturing improved pistons (22), which are reciprocated by a swash plate (20) in an compressor. Each piston (22) includes a head (40) and a skirt (42). The head (40) has a cylinder (41) with an open end, and the skirt (42) has a lid (43) for closing the open end of the cylinder (41). The lid (43) is friction welded to the cylinder (41). This method firmly joins the lid (43) to the cylinder (41) and reduces the cost and the time for manufacturing.






Search report