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1. GB2087009 - TORQUE TRANSMITTING BODY FOR TRACTION DRIVE TRANSMISSIONS AND NORMAL FRICTION FORCE DEVELOPING METHOD

Office
United Kingdom
Application Number 8138446
Application Date 19.05.1980
Publication Number 2087009
Publication Date 19.05.1982
Publication Kind B
IPC
F16H 15/52
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
15Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
48with members having orbital motion
50Gearings providing a continuous range of gear ratios
52in which a member of uniform effective diameter mounted on a shaft may co-operate with different parts of another member
F16H 15/50
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
15Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
48with members having orbital motion
50Gearings providing a continuous range of gear ratios
F16H 37/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
37Combinations of mechanical gearings, not provided for in groups F16H1/-F16H35/116
02comprising essentially only toothed or friction gearings
CPC
F16H 15/16
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
15Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
02without members having orbital motion
04Gearings providing a continuous range of gear ratios
06in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
16in which the member B has a conical friction surface
F16H 15/50
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
15Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
48with members having orbital motion
50Gearings providing a continuous range of gear ratios
Applicants VADETEC CORP
Priority Data 8000583 19.05.1980 US
Title
(EN) TORQUE TRANSMITTING BODY FOR TRACTION DRIVE TRANSMISSIONS AND NORMAL FRICTION FORCE DEVELOPING METHOD
Abstract
(EN)
A nutating traction drive in which external rolling surfaces on a one-piece bi-conical body (10) are retained against axially spaced internal ring surfaces (51, 52) at diameterically opposite points of contact by a mechanism acting between a body (18) which is rotatable on the axis of the ring surfaces or a first axis (24) and which carries the biconical body (10) on a second axis (30) inclined with respect to and intersecting the first axis at a point (S) of axes intersection located midway between the ring surfaces (51, 52) and points of contact. The mechanism includes a pivotal member (66) having a fulcrum point (78) eccentric from the first axis (24) or displaced from a plane containing both the first (24) and second (30) axes so that a torque reaction to rotation of the carrying body (18) by the biconical body (10) results in a force attempting to increase the angle between the first (24) and second (30) axes. A preloading device (82) acting to rock the pivot member (66) in one direction provides a preload bias of the rolling surfaces against each other whereas an unloading device (84) operating to swing the pivot member in the opposite direction results in a removal of normal friction force between the engaged rolling surfaces.