B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/132, 18/142
B29C 73/32 (2006.01) B29C 73/02 (2006.01) B29C 33/00 (2006.01)
Patent
CA 1050714
ABSTRACT OF THE DISCLOSURE: A method for repairing or retreading a portion of a vehicle tyre. The method of the invention comprises placing unvulcanized rubber on or in the carcass of the tyre, covering with an unstressed enclosure that portion of the tyre to be repaired or retreaded and the portion at least immediately surrounding that portion to be repaired or retreaded, attaching the edges of the enclosure to the tyre in gas-tight relationship around the portion to be repaired or retreaded by means of a plastically deformable adhesive that remains effective at the temperature necessary for vulcanization of the unvulcanized rubber, applying to the enclosure between the enclosure and the tyre gas pressure conditions as to evacuate air and gas occlusions from the space between the enclosure and the tyre, and vulcanizing by heat application the unvulcanized rubber placed on or in the tyre. The work time and costs when using an enclosure such as a flexible cover which only covers the repair point are greatly reduced, and it is no longer necessary to provide an enclosure enclosing the entire tyre which particularly in the case of large tyres such as for earth moving vehicles is very expensive.
227002
Na
Vakuum Vulk Holdings Ltd.
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