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. 30, 1991
Filed:
Aug. 16, 1990
J Victor Perr, Greenwood, IN (US);
Cummins Engine Company, Inc., Columbus, IN (US);
Abstract
An injector drive train push-rod injector plunger connection for use in internal combustion engines is disclosed. The injector includes a body having an axial bore, a plunger, and a biasing mechanism which biases the plunger away from the injection chamber. The plunger is slidable within the bore. A push rod connects the plunger to a drive train assembly which includes a pivotable rocker arm. A first end of the push rod is connected to the plunger and a second end of the push rod is connected to the driven end of the rocker arm. The first end includes a spherical portion which is receivable in a complementarily-shaped concave portion disposed on the outer end of the plunger but not within the plunger. The spherical portion has a diameter at least equal to the outer diameter of the plunger. The load from the driving assembly is transmitted from the push rod to the plunger at the end of the plunger only. This arrangement reduces almost to elimination side loading on the plunger and on the fuel injector thereby reducing wear, preventing leakage and maintaining better control over the amount of injected fuel.