Patent ID: 11885246
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 10:
11. An engine valve comprising:
a body of revolution, defining an axis of revolution, a radial direction perpendicular to the axis of revolution, and a circumferential direction about the axis of revolution,
the body of revolution including a stem, a head comprising an outer lip surface, a seating surface extending radially and axially inwardly from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface; and
wherein the combustion surface includes a first convex arcuate surface spaced away from the outer lip surface a first radial distance, at least partially forming a raised ring extending circumferentially about the axis of revolution and defining an axial extremity of the body of revolution, and a first planar surface extending radially inwardly from the outer lip surface toward the first convex arcuate surface and perpendicularly to a direction parallel with the axis of revolution;
the raised ring defining a radial width, and an inside diameter dimension radially inward of the first convex arcuate surface and extending through the axis of revolution, and the inside diameter dimension is larger than the radial width.