Valve guide seal device

Details Valve guide seal device Valve guide seal device

1987-03-27

1987-11-17

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277178, 123188P, 123188GC, F16J 1556, F01L 308

Patent

active

047069678

ABSTRACT:
A valve guide seal device for the stem of a valve used in an internal combustion engine includes a seal/scraper ring retainer having an upper enlarged diameter portion supporting a scraper ring adapted to be fixed in the counterbore of a stepped valve guide bore in the cylinder head of the engine and a lower tube portion extension that projects into a fluid passage in the cylinder head, flow through which is controlled by a poppet valve that has a nominal diameter valve stem portion slidably received in the valve guide bore and in the scraper ring, and a valve stem portion with an upstanding annular bead that is slidably received in the lower tube portion extension when the valve is in its valve closed position to define therewith a gas flow barrier and which is adapted to scrape out any carbon deposits or the burnt ash therefrom during opening movement of the valve.

REFERENCES:
patent: 2418674 (1947-04-01), Steiner
patent: 3369819 (1968-02-01), Soo
patent: 3372941 (1968-03-01), Liebig
patent: 3492982 (1970-02-01), Norris

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