Ellipsoid roller bearing piston ring

Details Ellipsoid roller bearing piston ring Ellipsoid roller bearing piston ring

2007-10-23

2007-10-23

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

C092S178000

Reexamination Certificate

active

11422140

ABSTRACT:
An improved piston ring suitable for use in an internal combustion engine is disclosed comprising a plurality of races sized to receive elongate rollers disposed around the circumference thereof. The elongate rollers may be shaped as a prolate ellipsoid or other rounded shape. The piston ring may seat within a groove in fluid communication with an oil channel extending through a piston rod and opening into a rod bearing connecting the piston rod to a crankshaft. A crankshaft has a corresponding oil channel therewith and has an opening positioned to periodically align with the opening in the rod bearing when rotated. Oil is pumped into the oil channel in the crankshaft to force oil over the piston rings. Drain apertures may be formed in another groove formed in the piston to conduct oil away from the piston.

REFERENCES:
patent: 2712483 (1955-07-01), Ciaccia
patent: 3327593 (1967-06-01), Ciaccia
patent: 3398653 (1968-08-01), Foster
patent: 3466054 (1969-09-01), Berg
patent: 4440069 (1984-04-01), Holtzberg et al.
patent: 4596179 (1986-06-01), Bando
patent: 4704949 (1987-11-01), Foster
patent: 4848212 (1989-07-01), Kawano et al.
patent: 5437220 (1995-08-01), Cheng et al.
patent: 5615600 (1997-04-01), Cheng et al.
patent: 5893318 (1999-04-01), Cheng et al.

Affiliated with

Also associated with

Rating

Ellipsoid roller bearing piston ring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ellipsoid roller bearing piston ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ellipsoid roller bearing piston ring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3842456