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. 30, 1996
Filed:
Jan. 31, 1995
Lianghe Zuo, Normal, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A fuel injector nozzle and tip assembly comprises a check housing having a central axis and defining a cavity therealong with at least one spray orifice at a first end portion of the cavity and a control port of a smaller diameter than the cavity at a second end portion of the cavity. A discharge passage of the housing opens into the cavity at the first end portion. A needle check is disposed in the cavity and has an end portion operably engaging the first end portion of the cavity and operably blocking the orifice in a first position. A control port check is also disposed in the cavity for operable movement between a first position against the second end portion of the cavity blocking fluid flow through the control port and a second position spaced from the second end portion of the cavity permitting fluid flow through the control port. A biasing device is functionally disposed between the needle check and the control port check biasing the control port check and the needle check to their respective first positions.