Patent ID: 7367912
Filing Date: 2008-05-06
Classification: F16H

Abstract:
1. A mechanical counter-rotation drive, comprising: a support structure that remains stationary with respect to the mechanical drive and providing a structural point of attachment for the mechanical drive; a first driving shaft that provides a drive torque having an eccentric portion and rotating in a first angular direction of rotation; a second shaft, having a same axis of rotation as the first shaft, functioning as a driven shaft and rotating in a second angular direction of rotation that is opposite to the first angular direction of rotation; a first plate having a plurality of lobes and operationally connected with the eccentric portion of the first driving shaft and having a center that is not aligned with the axis of rotation of the first and second shafts and rotates eccentrically with respect to the axis of rotation; a plurality of first pins operationally connected to the support structure and arranged such that a portion of a perimeter of the first plate is in rolling contact with the first pins and such that the arrangement causes the first plate to rotate in the second angular direction of rotation; a plurality of second pins that are operationally connected to the first plate or are constitutive parts of the first plate; and a second plate having a plurality of lobes and operationally connected with the first plate in such a way that a portion of a perimeter of the second plate is in rolling contact with the second pins of the first plate producing a rotation of the second plate in the second angular direction of rotation, wherein the second shaft is operationally connected to the second plate or is a constitutive part of the second plate, and is driven by the second plate.