Curing envelope for and method of retreading tires

Details Curing envelope for and method of retreading tires Curing envelope for and method of retreading tires

2006-10-03

2006-10-03

Mackey, James P. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Product or preform repair or restoring means

Tire recapping, rebeading or sidewall replacing means

C156S096000, C156S382000, C156S909000, C425S024000, C425S812000

Reexamination Certificate

active

07114935

ABSTRACT:
The present invention provides for proper air bleed without using air wicking fabric strips and/or the perforated polyethylene material or the like. Instead, an inside surface of a curing envelope is molded with a unique embossed pattern which is designed to channel to a vacuum valve, expeditiously, all the air being evacuated from between the outer surface of a tire and an inner surface of the envelope. Additionally, a valve base area is recessed so as to allow the air channels to open directly into the valve base area during evacuation. The envelope is also designed to accept various styles and designs of air valves. Another unique feature is the creation of a decorative pattern on the inside shoulder area of a tire by transfer of a surface feature from the envelope interior. This pattern provides a significant improvement in the appearance of the finished tire.

REFERENCES:
patent: 4116605 (1978-09-01), Burrell
patent: 4198367 (1980-04-01), Burrell
patent: 5173353 (1992-12-01), Yamamoto
patent: 5281118 (1994-01-01), Alvarenga
patent: 5306130 (1994-04-01), King et al.
patent: 5882471 (1999-03-01), Chandler et al.
patent: 6056852 (2000-05-01), Presti et al.
patent: 6261409 (2001-07-01), Presti

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