Planetary gear transmission systems or components – Planet pinion is friction gear – Variable speed ratio
Patent
1990-11-16
1991-12-10
Herrmann, Allan D.
Planetary gear transmission systems or components
Planet pinion is friction gear
Variable speed ratio
74190, F16H 1550
Patent
active
050713949
ABSTRACT:
A continuously variable transmission has an input shaft rotatably mounted to a frame. Plural output wheels are located around the input shaft and are rotatably mounted to the frame. The output wheels have respective axes of rotation that lie in a plane, which plane is generally perpendicular to the axis of rotation of the input shaft. Each output wheel has an arcuate circumferential surface. The output wheels are arranged around the input shaft so that the innermost portions of their circumferential surfaces form a traversing path around the input shaft. The input shaft has one or more drive rollers coupled thereto so that the drive rollers can both rotate and pivot independently of the input shaft. As the input shaft rotates, the drive rollers traverse the traversing path. A slide assembly is mounted on the input shaft and is linked to the drive rollers so as to vary the orientation of the drive rollers relative to the traversing path, wherein the speed ratio between the input shaft and the output wheels can be controlled.
REFERENCES:
patent: 1146982 (1915-07-01), Weiss
patent: 1452946 (1923-04-01), Weiss
patent: 1537515 (1925-05-01), Weiss
patent: 1541882 (1925-06-01), Weiss
patent: 1728383 (1929-09-01), Weiss
patent: 3076347 (1963-02-01), Grant
patent: 4044620 (1977-08-01), F'Geppert
patent: 4112781 (1978-09-01), Baugh
patent: 4448087 (1984-05-01), Barzel
patent: 4487086 (1984-12-01), Broziat
patent: 4841791 (1989-06-01), Lopez
SAE The Engineering Society for Advancing Mobility Land Sea Air and Space, "Continuously Variable Transmission for Passenger Cars", PT-30, pp. 195-208, 1986.
SAE Society of Automotive Engineers, Inc., "Advances in Traction Drive Technology", pp. 3.921-3.934, 1984.
NASA Reference Publication 1154, Published Oct. 1985, "Design of Traction Drives", by Stuart H. Lowenthal and Erwin V. Zaretsky, pp. 1-45.
"Rubber-Band", Cars are Coming Back, Mechanical Engineering, Dec. 1984 issue, pp. 34-38, an ME Staff Report.
"Of Continuous Interest", by John Matras, Autoweek, Jan. 23, 1989 issue, pp. 26-27.
"Subaru Revives the Variable Transmission", Consumer Reports, Aug., 1989 issue, pp. 500-501.
Herrmann Allan D.
Mantooth Geoffrey A.
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