Patent ID: 8201531

Claim:
A desmodromic valve mechanism comprising at least: a valve ( 11 ); a valve actuator ( 10 ), said valve actuator ( 10 ) being attached adjacent to the valve ( 11 ); a track ( 4 ); a first link ( 9 ), said first link ( 9 ) being pivotally mounted at one end about a pivot ( 150 ) on said valve actuator ( 10 ), said link ( 9 ) being pivotally mounted at its other end about a pivot ( 151 ); a second link ( 154 ), said second link ( 154 ) being pivotally mounted at one end about said pivot ( 151 ), said second link ( 154 ) being pivotally mounted at its other end to a control pivot ( 156 ); a drive pin ( 31 - 32 ), said drive pin ( 31 - 32 ) being engaged in said track ( 4 ); a third link ( 152 ), said third link ( 152 ) being pivotally mounted at one end about said pivot ( 151 ), said drive pin ( 31 - 32 ) being mounted at the other end of said link ( 152 ); an actuation pin ( 158 ), said actuation pin ( 158 ), via a fourth link ( 155 ), displaces said drive pin ( 31 - 32 ) along said track ( 4 ), said track ( 4 ) comprising a lost motion portion and an actuation portion, so that motion of the actuation pin will cause the linkage to oscillate and the drive pin to perform a reciprocating motion along the track, so that engagement of the lost motion portion of the track by the drive pin will cause the valve to stay closed, so that engagement of the actuation portion of the track by the drive pin will cause the valve to move opening and closing, so that the valve mechanism is rid of inertia loads from moving tracks offering higher revving.