Aisin Aw Co., Ltd.

Masahiro Ida

Masaaki Nishida

Kazumasa Tsukamoto

Masahiro Hayabuchi

Satoru Kasuya

Hiroshi Tsutsui

Yoshihisa Yamamoto

Akitomo Suzuki

Nobukazu Ike

Mitsutaka Okuno

Tsuyoshi Kawamoto

A transmission has an oil drain passage for connecting an oil reservoir with a mission case in a pump casing. The automatic transmission has also a retainer serving as a shielding member to shield between a discharge opening of the oil drain passage from at least part of a multistage transmission mechanism. This ensures that breather oil blow, which is caused by the spattering and stirring of operating oil by the high-speed drum member, is shielded from at least part of the transmission mechanism.

Automatic transmission

The automatic transmission of the present invention prevents fluctuation of torque transmission through a band brake. In the hydraulic operator for the band brake, a resilient elastic cushion is provided between a rod abutting one end of the band of the band brake and a piston. Any slippage between the band and drum of the band brake will result in oscillation of the rod. However, the elastic cushion absorbs oscillation of the rod, thereby isolating the piston from that oscillation.

Automatic transmission with band brake and hydraulic operator

Growing community of inventors

Anjo, Japan

Masahiro Ida