Oil ring for an internal combustion engine

Details Oil ring for an internal combustion engine Oil ring for an internal combustion engine

2007-08-07

2007-08-07

Pickard, Alison K. (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

C277S464000, C277S465000, C277S442000

Reexamination Certificate

active

10479372

ABSTRACT:
An oil ring for an internal combustion engine, comprising a metallic annular body (10) to be mounted around a piston (P) reciprocating inside a cylinder (C) of the engine, said annular body (10) having opposite lateral faces (11), an internal face (12) onto which will be seated a resilient expander (M), and an external contact face (13) to be seated against the internal face of the cylinder (C) and having a height (h) that is substantially smaller than the height (H) of the internal face (12). Each lateral face (11) is defined by one or more lateral face portions (11a,11b), which are designed to reduce the moment of inertia of the annular body (10), giving higher conformability to the latter. Preferentially, but not exclusively, the annular body (10) can be further provided with channels (15, 16), extended along at least part of the ring hight and which are radially spaced back in relation to the external contact face (13).

REFERENCES:
patent: 1327801 (1920-01-01), Blache
patent: 2291945 (1942-08-01), Bowers
patent: 2346897 (1944-04-01), Bowers
patent: 2452503 (1948-10-01), Teetor
patent: 2511874 (1950-06-01), Phillips
patent: 2657962 (1953-11-01), Robinson
patent: 2754165 (1956-07-01), Quade
patent: 2848288 (1958-08-01), Johnson
patent: 3241219 (1966-03-01), Hamm
patent: 3326561 (1967-06-01), Braendel
patent: 3822973 (1974-07-01), Prasse et al.
patent: 4099730 (1978-07-01), Nisper
patent: 4452464 (1984-06-01), Furuhama
patent: 4629200 (1986-12-01), Ruddy
patent: 4669369 (1987-06-01), Holt et al.
patent: 5295696 (1994-03-01), Harayama et al.
patent: 5788246 (1998-08-01), Kuribayashi et al.
patent: 6793222 (2004-09-01), Katsaounis et al.
patent: 8503197 (1985-11-01), None
patent: 3606011 (1987-09-01), None
patent: 3833322 (1989-12-01), None
patent: 19755425 (1999-06-01), None
patent: 198 08 483 (1999-09-01), None
patent: 0544459 (1993-06-01), None

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