| 摘要 |
A variable camshaft phase changing device comprises two axially-spaced annular gears disposed and engaged between a drive and a driven member, a plurality of coil springs compressed between the annular gears to bias one apart from the other, and an annular piston having a plurality of pins which pass through one and the other of the annular gears. The plurality of pins have heads arranged to come into driving relation with the other of the annular gears.
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