Delivery lance with rotary nozzle

(19)

(11)

EP 0 879 644 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.01.2002 Bulletin 2002/03

(43)	Date of publication A2:
	25.11.1998 Bulletin 1998/48

(21)	Application number: 97202633.0

(22)	Date of filing: 28.08.1997

(51)	International Patent Classification (IPC)⁷: B05B 3/04

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV RO SI

(30)

Priority:

22.05.1997 IT RE970034

(71)	Applicant: Interpump Group S.P.A.
	42040 S.Ilario D'Enza (Reggio Emilia) (IT)

(72)	Inventors:
	Arsi, Giuseppe 42040 S. Ilario D'Enza (Reggio Emilia) (IT) Landini, Erminio 42040 S. Ilario D'Enza (Reggio Emilia) (IT)

(74)	Representative: Corradini, Corrado
	Studio Ing. C. CORRADINI & C. S.r.l. 4, Via Dante Alighieri 42100 Reggio Emilia 42100 Reggio Emilia (IT)

(54)	Delivery lance with rotary nozzle

(57) A high-pressure water delivery lance with rotary nozzle (11) comprises a cylindrical chamber (10) known as the stator, which is fed with pressurized water via at least one tangential conduit the direction of which has an axial component, and in which there rotates a nozzle (11) known as the rotor having an at least partly frusto-conical wall which rolls on the chamber surface, a sized axial hole and an end sealedly resting in an end seat of the chamber, the rotor and stator being formed of materials having between them a dynamical friction coefficient of less than 0.20.

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