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US 3,937,606 AGranted
Mold for forming tires
AssigneeThe Goodyear Tire & Rubber Company
InventorMarcel J. Morheng
Life of this patent
Estimating the term…
Abstract
A mold provided with specially configured blades for forming correspondingly configured recesses in ribs shaped in the tire tread by a number of grooves which generally extend in a circumferential direction about the tire.
Claims2
A mold in which tires are molded and vulcanized, comprising:
- a. a tread ring, including configured projections integrally cast in the ring for forming correspondingly configured grooves in the tread of a tire being molded and vulcanized in the mold;
- and
- b. a plurality of blades separately shaped apart from the ring and fastened to the ring during the process for forming the finished ring including the projections and blades, each of the blades having a uniform cross-section throughout its height measured from the ring, a non-uniform cross-section throughout the length thereof, and a shape and size sufficient to produce a correspondingly shaped recess in the tread of a vulcanized tire, each of the plurality of blades having opposing extremities which are smaller, in thickness, than a portion of the blade intermediate the extremities.
A mold in which tires are molded and vulcanized, comprising:
- a. a tread ring, including configured projections integrally cast in the ring for forming correspondingly configured grooves in the tread of a tire being molded and vulcanized in the mold;
- and
- b. a plurality of blades separately shaped apart from the ring and fastened to the ring during the process for forming the finished ring including the projections and blades, each of the blades having a uniform cross-section througout its height measured from the ring, a non-uniform cross-section throughout the length thereof, and a shape and size sufficient to produce a correspondingly shaped recess in the tread of a vulcanized tire, each of the plurality of blades having alternate portions with enlarged and reduced thicknesses, and the alternate portions being symmetrical from the longitudinal axis of the blade.
Dependencies are inferred from the claim text.