| (19) |
 |
|
(11) |
EP 1 561 895 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
21.06.2006 Bulletin 2006/25 |
| (43) |
Date of publication A2: |
|
10.08.2005 Bulletin 2005/32 |
| (22) |
Date of filing: 04.02.2005 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (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 MC NL PL PT RO SE SI
SK TR |
|
Designated Extension States: |
|
AL BA HR LV MK YU |
| (71) |
Applicants: |
|
- Castagna, Annunzio
37121 Verona (IT)
- Alfonsi, Antonella
00146 Roma (IT)
- Valla, Stefano
40134 Bologna (IT)
|
|
| (72) |
Inventors: |
|
- Castagna, Annunzio
37121 Verona (IT)
- Alfonsi, Antonella
00146 Roma (IT)
- Valla, Stefano
40134 Bologna (IT)
|
| (74) |
Representative: Paolini, Elena |
|
Ufficio Internazionale Brevetti,
INIP,
Via Ruggi 5
40137 Bologna
40137 Bologna (IT) |
|
| |
|
(57) The bar consists of a first metal tube (1), realized in 100CR6, steel or similar,
on the outside wall (2) of which is made a temper for superficial hardening. Into
said tube is coaxially put a second tube (4) with hole or cavity (5) for all its length
in which is put a cable (6). Inside said tube (4), spaced to a space (7), is put a
full tungsten carbide cylinder (8).