Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-02-09
1986-03-11
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277222, F16J 914
Patent
active
045751072
ABSTRACT:
A piston for a reciprocating internal combustion engine includes at least one pressure ring installed in an outer surface of the piston main body adjacent to the piston head. The pressure ring has a double-angle butt end construction comprising an outer circumferential surface slidably contacting the inner circumferential wall of the cylinder, a radially extending first butt flat end face, and a side wall facing the combustion chamber side, namely the high-pressure side, of the engine piston chamber. Only a corner portion formed on the combustion chamber side of the pressure ring by the outer circumferential surface, flat end face and side wall is partially cut away to form a notch which is contiguous to the outer circumferential surface, end face and side wall. The pressure ring further includes a radially extending second butt flat end face opposing the first flat end face, and a rib projecting circumferentially from the second flat end face only at a position corresponding to the notch, the rib having a shape which is complementary to that of the notch for being gas-tightly received by the notch when the pressure ring is installed in an outer circumferential groove of the piston main body.
REFERENCES:
patent: 1397334 (1921-11-01), Schmolinski
patent: 1512393 (1924-10-01), Behnke
patent: 1930857 (1933-10-01), Morton
Honda Giken Kogyo Kabushiki Kaisha
Kabushiki Kaisha Riken
Ward Robert S.
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