Piston pump, particularly for inflating tyres, mattresses, sports equipment and the like

(19)

(11)

EP 0 215 752 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.03.1989 Bulletin 1989/10

(43)	Date of publication A2:
	25.03.1987 Bulletin 1987/13

(21)	Application number: 86830256.3

(22)	Date of filing: 17.09.1986

(51)	International Patent Classification (IPC)⁴: F04B 33/00

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

(30)

Priority:

20.09.1985 IT 5382785 U

(71)	Applicant: MONDO S.p.A.
	I-12060 Gallo d'Alba (Cuneo) (IT)

(72)	Inventor:
	Stroppiana, Fiorindo I-12060 Gallo d'Alba Cuneo (IT)

(74)	Representative: Bosotti, Luciano et al
	c/o JACOBACCI & PERANI S.p.A. Corso Regio Parco, 27 10152 Torino 10152 Torino (IT)

(56)

References cited: :

(54)	Piston pump, particularly for inflating tyres, mattresses, sports equipment and the like

(57) A piston pump for pumping fluids, in which at least one intake duct (8) and a delivery duct (9) for the pumping fluid are provided in the rod (5) for effecting the reciprocating sliding of the piston (4), includes valve members (16-18) at least partly associated with the piston (4) and selectively closable and openable with the movement of the piston (4) to put that (14 or 15) of the two chambers whose dimensions are decreasing at the particular time into communication with the delivery duct (9). A further valve member (19) associated with one (14) of the two chambers (14, 15) permits the said one (14) of the two chambers (14,15) to be put into free communication with the outside of the cylinder (2).

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