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. 12, 1994
Filed:
Nov. 04, 1992
Cummins Engine Company, Inc., Columbus, IN (US);
Abstract
A fuel injector which uses interchangeable subassemblies to allow the fuel injector to be converted from open to closed nozzle options without affecting engine installation, and without altering the timing or metering principles. In accordance with a preferred embodiment of the invention, the fuel injector is comprised of two subassemblies, a first subassembly of which is a timing or control subassembly that is used in both the closed and open nozzle options, and which forms the top portion of the fuel injector. The second subassembly is a nozzle assembly and is form in two versions, an open nozzle version and a closed nozzle version, either of which can be used with the timing assembly. In a preferred form of the timing subassembly, a pressure-responsive valve for opening a timing chamber draining passage is provided within the upper plunger.