发明授权
- 专利标题： Pump device
- 专利标题（中）： 泵装置
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申请号： US728166申请日： 1985-05-01
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公开(公告)号： US4558992A公开(公告)日： 1985-12-17
- 发明人: Isao Hamano , Akira Morishita , Yoshifumi Akae , Youji Nishimura , Toshinori Tanaka , Kiyoshi Yabunaka
- 申请人： Isao Hamano , Akira Morishita , Yoshifumi Akae , Youji Nishimura , Toshinori Tanaka , Kiyoshi Yabunaka
- 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： JPX57-168914 19821106
- 主分类号： F04B39/12
- IPC分类号： F04B39/12 ; F04B41/06 ; F04D25/16 ; F04D27/02 ; F04B35/04
摘要：
An air pump device comprises an electric motor, a low and a high pressure type pump disposed at both ends of a rotary shaft extending from the motor to be connected in series to each other through a discharge tube from the low pressure type pump extending to a suction port of the high pressure type pump, and an air suction tube connected via a valve to the discharge tube downstream of a change-over switch disposed in the discharge tube.
公开/授权文献
- US5859933A Image forming apparatus 公开/授权日：1999-01-12
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