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:
Nov. 04, 2014
Filed:
Jul. 26, 2013
Mahle Metal Leve S/a, Jundiai, BR;
Mahle International Gmbh, Stuttgart, DE;
Andre Ferrarese, Sao Paulo, BR;
Rafael Antonio Bruno, Sao Paulo, BR;
MAHLE Metal Leve S/A, Jundiai, BR;
MAHLE International GmbH, Stuttgart, DE;
Abstract
A three-piece oil control ring is provided for use in a piston groove of an internal combustion engine. The ring comprises a first annular segment and a second annular segment, associated to an expanding element. The expander has a substantially annular shape and comprises a first end facing the internal wall of the groove when the ring is mounted on the piston and a second opposite end. The ring further comprises an intermediate portion having at least one protrusion for association with the segments. Still further, the first end exhibits first thickness value (E), the second end exhibits second thickness value (E) and the substantially intermediate portion exhibits third thickness value (E), wherein the value of (E) is substantially lower than the value of (E) and lower or similar to the value of (E), the difference between (E) and (E) being substantially higher than that between (E) and (E).