Piston guided by counter rotating connecting rods and cranks

(19)

(11)

EP 1 517 020 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.04.2005 Bulletin 2005/14

(43)	Date of publication A2:
	23.03.2005 Bulletin 2005/12

(21)	Application number: 04425673.3

(22)	Date of filing: 09.09.2004

(51)	International Patent Classification (IPC)⁷: F02B 75/06, F02B 75/32

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL HR LT LV MK

(30)

Priority:

16.09.2003 IT CA20030007

(71)	Applicant: Cubeddu, Giorgio
	09083 Serramanna (CA) (IT)

(72)	Inventor:
	Cubeddu, Giorgio 09083 Serramanna (CA) (IT)

(54)	Piston guided by counter rotating connecting rods and cranks

(57) The object of this invention is to improve the characteristics of the normal crank mechanism that is universally adopted on the internal combustion engines and reciprocating compressors to transform the reciprocating motion of the piston into the rotational motion of the crankshaft.
As the piston is contemporaneously constrained by two connecting rods, which are constrained by two counter rotating cranks, it is possible to eliminate the friction between the piston and the cylinder, reducing moreover the dimension of the crank mechanism and increasing the stroke value in function of the crank radius.

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