Method and apparatus for retread sidewall machining
AssigneeBridgestone Bandag, LLC
InventorsTroy A. Kost, Alexander G. Tomtschik
Life of this patent
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Abstract
A method of forming a retreaded tire is provided. The method includes coupling a retread element to a tire casing to form a retreaded tire having a tread surface and machining a sidewall of the retreaded tire. The sidewall of the retreaded tire is then machined, where machining the sidewall of the retreaded tire includes removing a portion of the sidewall to form a concave fillet in the sidewall. The concave fillet is positioned radially inward from the tread surface.
Claims20
A method of forming a retreaded tire, the method comprising:
- coupling a retread element to a tire casing to form a retreaded tire having a tread surface;
- and
- machining a sidewall of the retreaded tire, wherein the machining comprises:
- removing a portion of the sidewall to form a concave fillet in the sidewall, the concave fillet positioned radially inward from the tread surface.
A cutting tool assembly comprising:
- a chassis comprising:
- a main body;
- a first flange coupled to the main body and extending in a first direction, the first flange having a first roller configured for engaging a tread surface;
- and
- a second flange coupled to the main body and extending in a second direction different from the first direction, the second flange having a second roller configured for engaging a sidewall of a tire;
- and
- an tool coupled to the chassis, the tool comprising:
- a handle;
- an actuator;
- and
- a grinding bit operably coupled to the actuator, the grinding bit configured to remove a portion of the sidewall to form a concave fillet.
A method of forming a retreaded tire, the method comprising;
- providing a tire casing having a casing profile;
- providing a retread element having a back side and a front side, the front side having a tread surface;
- aligning the retread element on the tire casing to produce a retreaded tire assembly;
- curing the retreaded tire assembly such that the back side is coupled to the tire casing to form a retreaded tire;
- and
- machining a sidewall of the retreaded tire to remove a portion of the retreaded tire to form a concave filet contiguously and circumferentially about the sidewall of the retreaded tire.
Dependencies are inferred from the claim text.