Patent ID: 8034285

Claim:
A corresponding set of quenching dies for quenching steel rings, comprising: a first quenching die including a first plurality of spaced apart teeth with free ends and tapered sides collectively forming a first exterior frusto-conical surface engageable with a first inner edge of a steel ring; and a second quenching die including a second plurality of spaced apart teeth with free ends and tapered sides collectively forming a second frusto-conical surface engageable with a second inner edge of the steel ring generally opposed to the first inner edge of the steel ring; and the teeth being configured so that the first plurality of teeth can interdigitate with the second plurality of teeth when they overlap with the first conical surface engaging the first inner edge of the steel ring and the second conical surface engaging the second inner edge of the steel ring and being generally opposed to the first conical surface with the steel ring received between them.