发明授权
- 专利标题: Diaphragm type pump device having a cushion member
- 专利标题(中): 具有缓冲构件的隔膜式泵装置
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申请号: US873484申请日: 1986-06-12
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公开(公告)号: US4666378A公开(公告)日: 1987-05-19
- 发明人: Hitoshi Ogawa
- 申请人: Hitoshi Ogawa
- 申请人地址: JPX Tokyo
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX59-62788[U] 19840425
- 主分类号: F04B45/04
- IPC分类号: F04B45/04 ; F04B43/02 ; F04B21/02 ; F01B19/02
摘要:
A diaphragm type pump device has an elastic material imparting elasticity by the change of its volume which is placed in an operation chamber to decrease residual volume in the operation chamber when a diaphragm reaches the upper dead point.
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