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1. (US20090250880) Oil-control ring for an internal combustion engine

Office : United States of America
Application Number: 11989084 Application Date: 14.07.2006
Publication Number: 20090250880 Publication Date: 08.10.2009
Grant Number: 08104771 Grant Date: 31.01.2012
Publication Kind : B2
Prior PCT appl.: Application Number:PCTIB2006002165 ; Publication Number: Click to see the data
IPC:
F16J 9/06
F16J 9/20
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
06
using separate springs expanding the rings; Springs therefor
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
12
Details
20
Rings with special cross-section; Oil-scraping rings
Applicants: MAHLE International GmbH
MAHLE Metal Leve S.A.
Inventors: Ferrarese André
Uehara Samantha
Agents: Collard & Roe, P.C.
Priority Data: 0502980 20.07.2005 BR
Title: (EN) Oil-control ring for an internal combustion engine
Abstract: front page image
(EN)

An oil-control ring for an internal combustion engine, to be mounted between the sidewalls of a respective groove of a piston has two ring segments and an annular expander disposed between the two ring segments and presenting a support body defining a seating plane for each ring segment. The ring has at least one expander portion axially projecting from the support body of the expander, beyond at least one of the seating planes of a ring segment, and at least one superficial irregularity provided in at least one of the ring segments and which is dimensioned to be contained in the thickness of the respective ring segment and to interfere with at least one expander portion, in order to rotatively lock the ring segment in relation to the expander.


Also published as:
KR1020080049713EP1904767JP2009501872CN101253352WO/2007/010393