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:
Apr. 08, 2003
Filed:
Dec. 19, 2000
Applicant:
Inventors:
Mark A. Gasper, Tremont, IL (US);
David M. Klingbeil, Pekin, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 9/20 ; F16J 1/532 ;
U.S. Cl.
CPC ...
F16J 9/20 ; F16J 1/532 ;
Abstract
In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which traps upward moving pressurized fuel and forces an extension or wiper of the sealing member upward and outward into sealing engagement with the inner surface or bore of the barrel.