Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1990-06-06
1992-08-25
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
475163, F16H 2304, F16H 2310
Patent
active
051408643
ABSTRACT:
The face angle dependent force versus displacement properties of the double faced, asymmetrical inclined plane are extended to a three dimensional rotating machine which exhibits the properties of continuously variable torque versus speed ratios in both forward and reverse directions. These desired properties are obtained in the three dimensional model through the use of circular disks which are tilted on their axes of rotation to create the force versus angle properties of the inclined plane. The selection of desired torque-speed ratios including transitioning through a zero speed or "frictionless clutch" operation. Ratio selection is accomplished by setting the tilt angles of three disks around their respective axes of rotation. Two of these disks are mounted through universal joint mounts to the transmission output shaft and the third disk is mounted, through a universal joint mount, to a non-rotating sleeve surrounding the output shaft. Orthogonal torque components are coupled between adjacent disks by sets of rollers mounted at 90.degree. increments around each disk and rotating in synchronism with the disk's motion.
Since all force and motion coupling surfaces are, in the preferred embodiment, positive displacement rolling contact types, power transfer efficiency is very high. Also, since tapered roller to disk coupling surfaces can be non-slip for all contact surface ratios, the transmission of the invention is inherently robust and scalable to all size and power regimes.
REFERENCES:
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patent: 3977275 (1976-08-01), Kiesewetter et al.
patent: 4155407 (1979-05-01), Christiansen
patent: 4235116 (1980-11-01), Meijer et al.
patent: 4365940 (1982-12-01), Hosokawa
patent: 4841809 (1989-06-01), Jolly
Herrmann Allan D.
Krolikowski Julie
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