发明名称 |
Radial piston type multi-stroke hydraulic pump or motor |
摘要 |
In radial piston type multi-stroke hydraulic pump or motor having undulating cam surface, said cam surface is constructed based upon an asymmetrical trapezoid torque curve (of torque-phase diagram), thereby preventing the abrasive wear of the cam surface and faulty operations of valve means due to shorter valve switching time and also maintaining the torque constant.
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申请公布号 |
US4104956(A) |
申请公布日期 |
1978.08.08 |
申请号 |
US19770767338 |
申请日期 |
1977.02.10 |
申请人 |
HITACHI CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
ONO, KOZO;KATO, TAKETOSHI |
分类号 |
F04B1/04;(IPC1-7):F01B13/06 |
主分类号 |
F04B1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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