Piston ring assembly

Details Piston ring assembly Piston ring assembly

2008-09-30

2008-09-30

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

C277S467000, C277S472000, C277S474000

Reexamination Certificate

active

10605988

ABSTRACT:
A piston ring assembly includes an upper ring, a lower ring and an expander disposed between the upper and lower rings. When assembled, the piston ring assembly is positioned with a groove of a piston. During down stroke of the piston, the upper and lower rings radially compress. This radial compression induces axial expansion of the expander, thereby urging the upper and lower rings against upper and lower surfaces of the groove. The piston ring assembly provides a seal between not only an outer periphery and a wall of a cylinder, but also between the piston ring assembly and the annular groove of the piston to prevent escape of oil and gases.

REFERENCES:
patent: 1470263 (1923-10-01), Heslewood et al.
patent: 1492673 (1924-05-01), Case
patent: 1836027 (1931-12-01), Hellman
patent: 1877461 (1932-09-01), Hodge
patent: RE20256 (1937-01-01), Wuerfel
patent: 2148997 (1939-02-01), Phillips
patent: 2272531 (1942-02-01), Shannon
patent: 2299963 (1942-10-01), Colwell et al.
patent: 2323815 (1943-07-01), Landon
patent: 2349903 (1944-05-01), Fall
patent: 2424881 (1947-07-01), Fall
patent: 2670256 (1954-02-01), Pien
patent: 3000678 (1961-09-01), Gunther
patent: 3055669 (1962-09-01), Knoebel
patent: 3627333 (1971-12-01), Hill
patent: 4183544 (1980-01-01), Morsbach et al.
patent: 4210338 (1980-07-01), Collings, Jr.
patent: 4759266 (1988-07-01), Murray
patent: 5308089 (1994-05-01), Ishida
patent: 06050208 (1994-02-01), None

Affiliated with

Also associated with

Rating

Piston ring assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3928797