Stepless speed change unit

Details Stepless speed change unit Stepless speed change unit

2005-04-26

2005-04-26

Bucci, David A. (Department: 3682)

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Load responsive tension adjuster or shifter

C474S133000, C474S135000

Reexamination Certificate

active

06884191

ABSTRACT:
A continuously variable transmission having an endless V belt running across a driving pulley and a driven pulley, a transmission ratio changing mechanism for changing the running diameters of the belt around the pulleys radially in opposite directions to each other, and a tension-adjusting unit for pressing the belt to obtain belt tension. The tension-adjusting unit includes a tension roller coming into pressure contact with the slack side of the belt from outside, a swing arm having an end rotatably supported on a transmission case, a link member having an end rotatably supporting a shaft of the tension roller and another end rotatably coupled with another end of the swing arm, and an urging member for swingingly urging the swing arm so that the tension roller presses the belt. A linkage structure having two degrees of freedom is used for supporting the tension roller, so that the tension roller can automatically move to a position where it does not interfere with either pulley at any transmission ratio.

REFERENCES:
patent: 5286233 (1994-02-01), Engelstad et al.
patent: 5378198 (1995-01-01), Moroto et al.
patent: 5410923 (1995-05-01), Yamashita et al.
patent: 5820503 (1998-10-01), Bruchner et al.
patent: 2077576 (1991-05-01), None
patent: 1 136 850 (1960-06-01), None
patent: 1 136 850 (1962-09-01), None
patent: 2 159 018 (1971-11-01), None
patent: 2 159 018 (1973-05-01), None
patent: 38 38 754 (1989-06-01), None
patent: 198 22 632 (1999-11-01), None
patent: 60-69859 (1985-05-01), None
patent: 2-107859 (1990-08-01), None
patent: 2-121664 (1990-10-01), None
patent: 3-199719 (1991-08-01), None
patent: 5-106700 (1993-04-01), None
patent: 5-280613 (1993-10-01), None
Copy of European Patent Office Action for corresponding European Patent Application No. 01906137 dated Jun. 5, 2003.
Copy of European Patent Office Action for corresponding European Patent Application No. 01 906 137.3 dated Sep. 26, 2003.

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