Patent ID: 7533589

Claim:
A valve motion conversion device, comprising: a housing; a cam plate reciprocatable through the housing and having a groove extending diagonally across a plate width of the cam plate; a lower link having a pivot end and a free end, the lower link pivot end being pivotally mounted to the housing, the lower link free end having a cam pin and a slot formed adjacent thereto, the cam pin being cooperatively engaged to the groove; and an upper link having a pivot end and a free end, the upper link pivot end being pivotally mounted to the housing in offset relationship to the lower link pivot end, the upper link free end having a link pin cooperatively engaged to the slot; wherein: the lower link pivots about the lower link pivot end in response to slidable movement of the cam pin within the groove during reciprocation of the cam plate; the upper link pivots about the upper link pivot end in response to slidable movement of the link pin within the slot during pivoting of the lower link.