(19)
(11) EP 0 233 771 A3

(12) EUROPEAN PATENT APPLICATION

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

(43) Date of publication A2:
26.08.1987 Bulletin 1987/35

(21) Application number: 87301327.0

(22) Date of filing: 17.02.1987
(51) International Patent Classification (IPC)4: F04B 1/16, F04B 9/10
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 18.02.1986 US 829919

(71) Applicant: V-TECH INDUSTRIES INC.
Mississauga Ontario L4W 2Z6 (CA)

(72) Inventor:
  • Valavaara, Viljo K.
    Don Mills Ontario M3A 1E3 (CA)

(74) Representative: Hands, Horace Geoffrey et al
GEORGE FUERY & CO Whitehall Chambers 23 Colmore Row
Birmingham B3 2BL
Birmingham B3 2BL (GB)


(56) References cited: : 
   
     
    Remarks:
    A request for correction of errors in description and figure 2 has been filed pursuant to Rule 88 EPC. A decision on the request will be taken by the Examining Division.
     


    (54) Rotary pressure intensifier


    (57) A pressure intensifier for a fluid comprises at least three piston assemblies disposed along mutually parallel axes equiangularly disposed with respect to a central axis of the intensifier and radially equidistant therefrom. Each piston assembly comprises at least one low pressure cylinder and a pair of axially aligned and opposed high pressure cylinders. each high pressure piston being connected to the low pressure piston for conjoint axial movement therewith. Fluid is supplied to the low pressure cylinders from a supply means and discharged to a discharge means through a low pressure valve means operatively coupled to the pistons of each assembly so as to be driven thereby. High pressure collector means, usefully in the form of a closed circuit, are provided for receiving high pressure fluid from the high pressure cylinders. j






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