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:
Aug. 31, 1999
Filed:
Jul. 17, 1997
Yutaka Niwa, Nagoya, JP;
Hiroatsu Yamada, Nagoya, JP;
Masanori Sugiyama, Aichi-gun, JP;
Tateki Takayama, Toyota, JP;
Denso Corporation, Kariya, JP;
Abstract
A cylinder screw is fitted around an injector axially movably between a tapered surface and a flange. The cylinder screw presses down the flange in a direction to attach the injector to a cylinder head and presses up the tapered surface in a direction to detach the injector from the cylinder head. A stopper is formed annularly at the top of the injector and has a protrusion. With the protrusion being engaged in a positioning groove of the cylinder head, the injector is restricted from being turned in both rotating directions. Thus, the injector can be attached to and detached from the cylinder head with ease by only one cylinder screw without turning the injector. The flange of a retaining nut to which the tightening force of the cylinder screw exerts has a shortened axial length so that deformation in injector constituting members is reduced and changes in the fuel injection characteristics are reduced.