Aisin Aw Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Takahiro Torii

Satoru Kasuya

Mikio Iwase

Yoshiharu Harada

Takayuki Kawakami

Minoru Todo

Tsuyoshi Yamaguchi

Akihito Hongoya

Toru Souda

Naoki Okoshi

Kengo Nomura

Koji Ota

Mitsuhiro Takeda

Takumi Uchida

In a gear pump, an outer inner wall surface of a suction port which is located on a downstream side in a rotor rotation direction, that is, a first inner wall surface, is located inward of a bottom land between internal teeth of an outer rotor, and the suction port has a shallow portion extended inward from the first inner wall surface on the downstream side in the rotor rotation direction, and a deep portion that is formed so as to be continuous with the shallow portion and that is deeper than the shallow portion. Communication between an inter-tooth chamber and the suction port is cut off with the inter-tooth chamber facing only the shallow portion.

Gear pump including an inner rotor having a plurality of teeth

An automatic transmission that includes an input shaft; an output shaft; and a speed change mechanism portion that shifts a rotation of the input shaft to be transmitted to the output shaft, wherein: the output shaft has a spline formed in a range in which the output shaft fits in a power transmission shaft included in a vehicle, and n-stage (n is an integer of at least 2) chamfering is performed on a larger diameter portion of the spline.

Automatic transmission

Growing community of inventors

Hekinan, Japan

Takahiro Torii