Ball bearing and a continuously variable speed transmission...

Details Ball bearing and a continuously variable speed transmission... Ball bearing and a continuously variable speed transmission...

2006-06-20

2006-06-20

Fenstermacher, David (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C192S094000, C474S039000

Reexamination Certificate

active

07062987

ABSTRACT:
A ball screw in a continuously variable speed transmission has an axially immovable pulley half (2) and axially movable pulley half (3) both mounted on a rotary shaft (4). The axially movable pulley half (3) is moved by a ball screw (20) so as to infinitely vary the belt wrapping radius and thus the transmission speed. A nut (22), forming one part of the ball screw (20), is immovably secured in both axial and rotational directions. A screw shaft (21), forming the other part of the ball screw (20), is movable in both axial and rotational directions. The screw shaft21is connected to the axially movable pulley half (3). The axially movable pulley half (3) is axially moved by rotating the screw shaft (21).

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