Tire uniformity correcting drum and tire uniformity correcting apparatus including same
AssigneeKumho Tire Co., Inc.
InventorYeong Jun An
Life of this patent
Estimating the term…
Abstract
A tire uniformity correcting drum comprises: a lower drum to be in contact with a portion of an inner circumferential surface of a tire; an upper drum provided to be movable up and down with respect to the lower drum and configured to press another portion of the inner circumferential surface of the tire which is not in contact with the lower drum; and a hydraulic driving unit configured to connect the lower drum and the upper drum and move up and down the upper drum with respect to the lower drum. A contact area of the upper drum with the inner circumferential surface of the tire is smaller than a contact area of the lower drum with the inner circumferential surface of the tire.
Claims6
A tire uniformity correcting drum comprising:
- a lower drum to be in contact with a portion of an inner circumferential surface of a tire;
- an upper drum provided to be movable up and down with respect to the lower drum and configured to press another portion of the inner circumferential surface of the tire which is not in contact with the lower drum;
- and
- a hydraulic driving unit configured to connect the lower drum and the upper drum and move up and down the upper drum with respect to the lower drum,
- wherein a contact area of the upper drum with the inner circumferential surface of the tire is smaller than a contact area of the lower drum with the inner circumferential surface of the tire,
- wherein the upper drum includes:
- a drum body;
- and first and second heat insulators respectively provided at first and second end portions in a circumferential direction of the drum body,
- wherein first and second recess portions recessed in the drum body are respectively disposed at the first and second end portions in the circumferential direction of the drum body, and the first and second heat insulators are respectively fitted in the first and second recess portions and fixed to the drum body,
- wherein first and second rounded portions are respectively provided at first and second ends in the circumferential direction of the upper drum, and
- wherein the first rounded portion is formed by the first end portion and an outer surface of the first heat insulator, and the second rounded portion is formed by the second end portion and an outer surface of the second heat insulator.
Dependencies are inferred from the claim text.