| 摘要 |
An automatic transmission for automobiles having a gear means, a clutch and a brake, the engagement and disengagement of the clutch and the brake being changed over four shifting speed stages, wherein one of the mutually engageable friction elements of the brake is mounted to a housing of the transmission so as to be rotatably shiftable with respect to the housing through a small angle so that forward or backward rotary shifting of the friction element mechanically operates a timing valve which controls supply or exhaust of oil pressure to or from the brake.
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