The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2006
Filed:
Mar. 19, 2003
Shinya Yamamoto, Kariya, JP;
Satoru Kuramoto, Kariya, JP;
Osamu Uchiyama, Kariya, JP;
Daisuke Sato, Kariya, JP;
Mika Fujiwara, Kariya, JP;
Masahiro Kawaguchi, Kariya, JP;
Mamoru Kuwahara, Kariya, JP;
Nobuaki Hoshino, Kariya, JP;
Ryosuke Koshizaka, Kariya, JP;
Shinya Yamamoto, Kariya, JP;
Satoru Kuramoto, Kariya, JP;
Osamu Uchiyama, Kariya, JP;
Daisuke Sato, Kariya, JP;
Mika Fujiwara, Kariya, JP;
Masahiro Kawaguchi, Kariya, JP;
Mamoru Kuwahara, Kariya, JP;
Nobuaki Hoshino, Kariya, JP;
Ryosuke Koshizaka, Kariya, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya, JP;
Abstract
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.