| 摘要 |
A variable diameter pulley for transmitting variable speed drive by a trapezoidal belt has a first cheek rigid with the pulley boss and a second cheek rotatable with and axially slidable along the boss, a first friction washer abutting against the side of the slidable cheek remote from the fixed cheek, and a second friction washer housing in a cup mounted rigidly on the end of the boss remote from the slidable cheek, and a helical spring arranged around the boss and abutting at one end against the first washer and at the other end against the second washer.
|
