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:
Jan. 02, 2007
Filed:
Dec. 01, 2003
Yoji Nakajima, Kakuda, JP;
Kazuki Ishikawa, Kakuda, JP;
Takashi Yoshida, Kakuda, JP;
Katsumi Sahoda, Utsunomiya, JP;
Kouji Miyano, Utsunomiya, JP;
Yoji Nakajima, Kakuda, JP;
Kazuki Ishikawa, Kakuda, JP;
Takashi Yoshida, Kakuda, JP;
Katsumi Sahoda, Utsunomiya, JP;
Kouji Miyano, Utsunomiya, JP;
Keihin Corporation, Tokyo, JP;
Abstract
A back pressure chamber is defined at an end of a rod for acting in a direction to cancel out a pressure applied to a valve head, and an aspirator chamber is defined closely to the valve head for developing a pressure lower than a secondary pressure due to a suction caused by a nozzle. The rod has a first communication hole and a second communication hole that are defined therein which provides fluid communication between the back pressure chamber and the aspirator chamber.