Elevated Pressure and Temperature Tire Curing Utilizing Liquids
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United States of America Patent
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Issued Date -
Nov 3, 2016
app pub date -
Dec 16, 2014
filing date -
Dec 27, 2013
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Abstract
A method provides a retreaded tire by curing a tread with tread lugs extending from an under tread and tread voids between the tread lugs onto a tire casing. The tread and at least a portion of the tire casing are sealed in an envelope in a manner that provides voids, including the tread voids, within the seal of the envelope. The enveloped tire casing and tread are positioned within a vessel and a liquid is introduced into the envelope to fill at least some of the voids around the tread. The pressure and temperature in the vessel is increased in order to connect the tread to the tire casing by compressing and heating the tire casing and tread. In the presence of the liquid, the tread and tire casing maintain their shape despite the elevated pressure and temperature.
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