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:
Jul. 14, 2026
Filed:
May. 14, 2024
Caterpillar Inc., Peoria, IL (US);
Nicholas J. Randklev, Peoria, IL (US);
Curtis John Graham, Peoria, IL (US);
Jonathan Richard Chittenden, West Lafayette, IN (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A fuel injector sleeve for use in a remanufactured engine includes an elongate sleeve body including a clamping shoulder facing an axial direction and forming an undercut, and a sealing ridge transitioning between the undercut and an outer sleeve surface. The sealing ridge defines a sealing line radially outward of the undercut and extending circumferentially and uniformly around the longitudinal axis. The sealing line provides line contact between the sleeve and a clamping surface of a cylinder head to form a seal outboard of erosion upon the clamping surface from prior service. Related apparatus and remanufacturing methodology is also disclosed.