Patent ID: 6231468
Filing Date: 2001-05-15
Classification: F01C,F02B,F16H,Y10T

Abstract:
A desmodromic mechanism comprising:plural movement transmission members, each having axial ends, said transmission members being connected to and bearing on an intermediate element;a primary cam in permanent contact with each of said transmission members;a secondary cam in permanent contact with each of said transmission members,wherein said transmission members have contact surfaces that are shaped to ensure permanent and simultaneous contact with said primary and secondary cams,said primary cam, said secondary cam and said intermediate element being assembled with each other so as to move rotatably and/or linearly relative to each other and with invariable differential speeds for all positions of the desmodromic mechanism,said intermediate element having rectilinear guides, said guides having guide axles, said transmission members freely sliding in said guides;a space being formed between two adjacent one of said transmission members, a portion of a body of said intermediate element being between said two adjacent transmission members, and a portion of said secondary cam being between said two adjacent transmission members; andtwo bearing surfaces in contact with said axial ends of said transmission members and said portion of said body and said portion of said secondary cam defining a sealed variable volume chamber as a function of a relative position of said primary and secondary cams and of said intermediate element.