| (19) |
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(11) |
EP 0 240 446 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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24.02.1988 Bulletin 1988/08 |
| (43) |
Date of publication A2: |
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07.10.1987 Bulletin 1987/41 |
| (22) |
Date of filing: 02.04.1987 |
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| (84) |
Designated Contracting States: |
|
DE FR GB IT SE |
| (30) |
Priority: |
02.04.1986 ES 293323
|
| (71) |
Applicant: Piedrafita Martin, Julian |
|
() |
|
| (72) |
Inventor: |
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- Piedrafita Martin, Julian
()
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|
| |
|
| (54) |
An improved cam-shaft |
(57) An improved camshaft forming a type of valve timing system that can be used with
all the four cycle combustion internal engines, the so-called Otto engines, in which
each of the cams extends in an identical one, symmetrical and positioned at 180 degrees
with relation to the former, resulting that the number of cams is twice the number
of cams foreseen in a conventional shaft, and the number of revolutions is half ofthe
required ones for the latter to get the same purpose.