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. 20, 2009
Filed:
Feb. 20, 2004
Eiichi Kubota, Chiyoda-ku, JP;
Aikawa Shigeo, Chiyoda-ku, JP;
Michio Yoshida, Chiyoda-ku, JP;
Yasuhiro Kajiyama, Chiyoda-ku, JP;
Hiroyuki Yamada, Chiyoda-ku, JP;
Eiichi Kubota, Chiyoda-ku, JP;
Aikawa Shigeo, Chiyoda-ku, JP;
Michio Yoshida, Chiyoda-ku, JP;
Yasuhiro Kajiyama, Chiyoda-ku, JP;
Hiroyuki Yamada, Chiyoda-ku, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The problems can be solved by ensuring that Ga≦Gb<Gc or Ga<Gb≦Gc, wherein Ga denotes a clearing between the bore on the portion from the compression chamber of the high pressure pump to the cylindrical groove and the plunger, where a transverse aperture is connected with the bore through a cylindrical groove provided halfway through the bore of a cylinder; Gb a clearance closer to the cylindrical groove, out of the clearances between the bore from the cylindrical groove to the drive source side and the plunger; and Gc a clearance closer to the drive source side, out of the clearances between the bore from the cylindrical groove to the drive source side and the plunger.