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US 4,662,319 AGranted
Structurally lightened piston utilizable especially in an internal combustion engine
AssigneeS.E.M.T., S.A.
InventorPhilippe Ayoul
Life of this patent
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AssigneeS.E.M.T., S.A.
InventorPhilippe Ayoul
Estimating the term…
The piston for an internal combustion engine, consisting of a piston head (1) and a body (2) of monobloc or two-piece construction, the head bearing upon the body (2) via at least two circular bearing surfaces (4, 5), the body (2) having a bearing part (6) receiving an articulation part (10) rigidly attached to the end of a connecting rod (3) and said bearing part (6) having on its piston head side a wall (7) forming a bearing whose bearing surface (8) is continuous, is structurally lighter in that the portion of its body (2) connecting the wall (7) to the bearing surfaces (4, 5) is formed of at least two thin, truncated conical partitions (11, 12) whose center lines (13, 14, 15, 16) are rectilinear, each of said partitions bearing upon a separate one of the circular bearing surfaces (4, 5).
A piston for an internal combustion engine, the piston comprising a head and a separate body having an upper end provided with at least two concentric circular radially spaced bearing surfaces and a lower end, the lower end terminating in a bearing part for receiving an articulation part rigidly mounted on the end of a connecting rod, the bearing part comprising a wall having a concave bearing surface, the head being mounted on the upper end of the body via said at least two concentric circular bearing surfaces, the body further comprising means for connecting said wall to the concentric circular bearing surfaces, said connecting means comprising at least two thin partitions having a basically inverted truncated conical shape with straight center lines, each of said partitions having a base portion bearing on a separate one of said concentric circular bearing surfaces.
Dependencies are inferred from the claim text.