Patent · US Active

Piston ring for an internal combustion engine

US9279499B2 · kind B2 · utility

0Cited by

4References

9Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Wolfgang Issler · Schwaikheim, DE
Daniel Lopez · Chêne-Bourg, CH
Jose Valentim Lima Sarabanda · Taboão da Serra, BR

Key dates

Filing date	Feb 8, 2013
Grant date	Mar 8, 2016
Priority date	—
Expiry date	Feb 8, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2201/0448
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a piston ring (10, 110, 210, 310, 410, 510, 610) for pistons of internal combustion engines, having a ring running surface (14), a ring back (11), an upper ring flank (12), a lower ring flank (13), and two ring joint ends spaced apart by a gap (15). According to the invention, at least one opening (17, 121, 217, 223, 325, 407) is provided in the ring running surface (14), which opening forms a fluid connection between the ring running surface (14) and the ring back (11) or a ring flank (12, 13).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.