Back to results
US 6,631,908 B2Granted
Compression piston ring
AssigneeFederal-Mogul Burscheid GbmH
InventorsRichard Mittler, Mario Solia
Life of this patent
Estimating the term…
Abstract
A compression piston ring includes a ring gap defined by facing first and second end faces; a ring back situated diametrically opposite the ring gap; first and fourth quadrants extending from opposite sides of the ring gap and second and third quadrants extending from opposite sides of the ring back to the respective first and fourth quadrants. The first end face is situated in the first quadrant and the second end face is situated in the fourth quadrant. The wall thickness of the compression piston ring is reduced exclusively in the first and fourth quadrants.
Claims8
A compression piston ring comprising:
- (a) a ring gap defined by facing first and second end faces,
- (b) a ring back situated diametrically opposite said ring gap:
- (c) first and fourth quadrants extending from opposite sides of said ring gap;
- said first end face being situated in said first quadrant and said second end face being situated in said fourth quadrant,
- (d) second and third quadrants extending from opposite sides of said ring back to said first and fourth quadrants, respectively,
- (e) a ring thickness reduction provided along circumferential ring length portions exclusively in said first and fourth quadrants;
- and
- (f) terminal circumferential ring length portions containing said first and second end faces that are void of thickness reduction.
5 more elements
Dependencies are inferred from the claim text.