Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1993-03-22
1994-03-22
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277139, 277235A, F16J 906
Patent
active
052956962
ABSTRACT:
A combined oil ring is comprised of a steel oil ring having a generally I-shaped section consisting of upper and lower rails and a web connecting the both rails and a coil expander for forcing the oil ring outwardly. Each of the outer circumferential sliding surfaces of the circumferential outer projecting portions in the upper and lower rails forms a nitrided surface with a hardness of Hv 900 or more, at least one of the upper and lower surfaces in the circumferential outer projecting portion forms a surface with a hardness of lower than Hv 700, and a width of the outer circumferential sliding surface is smaller than 0.25 mm. The other surface of the upper and lower surfaces forms a nitrided surface with a hardness of Hv 900 or more or a surface with a hardness of lower than Hv 700.
REFERENCES:
patent: 2905512 (1959-09-01), Anderson
patent: 2912292 (1959-11-01), Lawitschka
patent: 3435502 (1969-04-01), Thompson et al.
patent: 4040637 (1977-08-01), McCormick
patent: 4085490 (1978-04-01), McCormick et al.
patent: 4185843 (1980-01-01), Beyer et al.
patent: 4522412 (1985-06-01), Kubo
patent: 4579355 (1986-04-01), Kooroki
Patent Abstracts of Japan, vol. 9, No. 272, JP-A-60 116 844.
MTZ, vol. 30, No. 3, 1969, G. Duck, pp. 100-106.
Machine Design, vol. 59, No. 3, Jun. 11, 1987, Cleveland, pp. 58-59.
Aruga Kazuyoshi
Harayama Akira
Cuchlinski Jr. William A.
Cummings Scott W.
Teikoku Piston Ring Co. Ltd.
LandOfFree
Combined oil 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 Combined oil ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined oil ring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-431850