(19)
(11) EP 1 634 703 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.04.2007 Bulletin 2007/15

(43) Date of publication A2:
15.03.2006 Bulletin 2006/11

(21) Application number: 05108217.0

(22) Date of filing: 07.09.2005
(51) International Patent Classification (IPC): 
B41F 27/10(2006.01)
 B31F 1/07(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 10.09.2004 IT VI20040213

(71) Applicant: Svecom-P.E. S.R.L.
36075 Montecchio Maggiore VI (IT)

(72) Inventor:
  • Lovato, Ferdinando
    36030, MOTTA di COSTABISSARA (VI) (IT)

(74) Representative: Bonini, Ercole et al
Corso Fogazzaro, 8
36100 Vicenza
36100 Vicenza (IT)

   


(54) Supporting shaft with expandable elements


(57) The invention is a supporting shaft (1) with expandable elements (4) comprising a cylindrical tubular member (2) with a plurality of expandable elements (4) installed on the outside of said tubular member (2) and connected to actuator units (6) that induce the radial displacement of said expandable elements (4) through operating means (7) controllable by an operator. Each actuator unit (6) comprises a plurality of slides (8) coupled slidingly and circumferentially to the outside of a central tubular element (9) that connects two facing and coaxial circular flanges (10, 11) fixed to the inner surface (2a) of the tubular member (2). Each slide (8) is connected to an expandable element (4) by means of a connecting rod (21) the ends of which are hinged to the slide (8) and to the expandable element (4). These hinges (22, 23) allow for various positions of the connecting rod (21) coming between a radial position coinciding with the maximum extension of the expandable elements (4) and a sloping position coinciding with the retracted position of the expandable elements (4).







Search report