Patent ID: 6938596

Claim:
Valve-stroke controls for continuously varying the length of the stroke and for maintaining the valves constantly closed in an internal-combustion engine while the engine is in operation, characterized in that, to prevent phase shifting on the part of the valve actuation due to setting of the controls, the cammed roller is secured to a more or less horizontal control that rotates around a driveshaft, a rocker lever is positioned under and paralleling the control rod one end of the rocker lever is accommodated in a first swivel on a setting lever that is fastened to and rotates along with the driveshafts, whereas the other end of the rocker lever is accommodated in a second swivel in a preponderantly upright linkage rod connected to the shaft of the cammed roller, whereby the distance between the axis of rotation of the roller and that of the second swivel on the one hand and between the axis of rotation of the driveshaft and that of the first swivel on the other are identical.