发明授权
- 专利标题： Vacuum pump having main and sub pumps
- 专利标题（中）： 主泵和副泵的真空泵
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申请号： US10391904申请日： 2003-03-19
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公开(公告)号： US07140846B2公开(公告)日： 2006-11-28
- 发明人: Shinya Yamamoto , Satoru Kuramoto , Osamu Uchiyama , Daisuke Sato , Mika Fujiwara , Masahiro Kawaguchi , Mamoru Kuwahara , Nobuaki Hoshino , Ryosuke Koshizaka
- 申请人： Shinya Yamamoto , Satoru Kuramoto , Osamu Uchiyama , Daisuke Sato , Mika Fujiwara , Masahiro Kawaguchi , Mamoru Kuwahara , Nobuaki Hoshino , Ryosuke Koshizaka
- 申请人地址： JP Kariya
- 专利权人： Kabushiki Kaisha Toyota Jidoshokki
- 当前专利权人： Kabushiki Kaisha Toyota Jidoshokki
- 当前专利权人地址： JP Kariya
- 代理机构： Morgan & Finnegan, LLP
- 优先权： JP2002-079264 20020320; JP2003-000554 20030106
- 主分类号： F04B3/00
- IPC分类号： F04B3/00 ; F04B5/00 ; F04B25/00
摘要：
A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotary shaft for transferring gas to an exhaust space. The sub pump is connected to the exhaust space for partially exhausting the gas from the exhaust space. The sub pump is driven by the same drive source. The displacement volume of the sub pump is smaller than that of the main pump.
公开/授权文献
- US20030180153A1 Vacuum pump 公开/授权日：2003-09-25
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