| 摘要 |
PROBLEM TO BE SOLVED: To provide an inner rotor of an oil pump equipped with fine trochoidal teeth. SOLUTION: In a trochoidal tooth profile 1 of the inner rotor A of a trochoid pump, both shoulders 111 in a width direction on an addendum 11 of the trochoidal tooth profile 1 are formed in a tertiary or higher-order curve. The tertiary or higher-order curve is formed in a Bezier curve. The higher-order curve is formed in a curve composed by properly combining the Bezier curve and the tertiary or higher-order curve. COPYRIGHT: (C)2008,JPO&INPIT
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