Piston ring assembly and method of making same
AssigneeDana Corporation
InventorRobert L. Sharpe
Life of this patent
Estimating the term…
Abstract
A piston and piston ring assembly wherein the piston is provided with a piston ring receiving groove having at least one inwardly converging side wall and an associated piston ring loosely received within the grove wherein the piston ring has at least one inwardly converging side wall of curved cross-section in facing relation with the inwardly converging side wall of the groove of the piston.
Claims7
A piston and piston ring assembly for a fluid pressure cylinder comprising:
- a piston with a peripheral groove having at least one inwardly converging side wall;
- and
- a piston ring having an outer peripheral wall, an inner peripheral wall having an axial dimension less than the outer wall, and at least one wall tending to inwardly converge from the outer wall to the inner wall, said piston ring being loosely received within the peripheral groove of said piston with the inwardly converging wall in facing relation to the inwardly converging wall of the groove of said a piston, wherein at least one of the inwardly converging walls of said piston and said piston ring is of concavely curved cross-section over a major portion of the wall thereof so as to establish line-to-line contact between the facing wall.
A piston ring for a pheripheral groove of an associated piston of a fluid pressure cylinder comprising a split annulus having an outer peripheral wall, an inner peripheral wall having an axial dimension less than the outer wall, and at least one wall tending to inwardly converge from the outer wall to the inner wall of concavely curved cross-section over a major portion of the wall thereof.
Dependencies are inferred from the claim text.