Hollow swash plate compressor piston with bores

(19)

(11)

EP 1 092 871 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	26.11.2003 Bulletin 2003/48

(43)	Date of publication A2:
	18.04.2001 Bulletin 2001/16

(21)	Application number: 00119744.1

(22)	Date of filing: 09.09.2000

(51)	International Patent Classification (IPC)⁷: 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

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Priority:

13.10.1999 JP 29055099

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

(72)	Inventors:
	Sugiura, Manabu, K.K. Toyoda Jidoshokki Seisakusho Kariya-shi, Aichi-ken, 448-8671 (JP) Takenaka, Kenji, K.K. Toyoda Jidoshokki Seisakusho Kariya-shi, Aichi-ken, 448-8671 (JP)

(74)	Representative: Hoeger, Stellrecht & Partner
	Uhlandstrasse 14 c 70182 Stuttgart 70182 Stuttgart (DE)

(54)	Hollow swash plate compressor piston with bores

(57) A unilateral-headed swash plate type compressor, in which a body 19a of a piston 19 in sliding contact with the inner peripheral surface of a cylinder bore 1a is formed with a cavity 19a for realizing a reduced weight and also formed with an annular groove 42 fitted with a piston ring 41 in sliding contact with the inner peripheral surface of the cylinder bore 1a, is disclosed. The body 19c of the piston 19 includes at least a first hole 46 and at least a second hole 48 open to the inner peripheral surface of the cylinder bore 1a and communicating with the crank chamber 8 through the cavity 19a.

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