Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Toroidal or annular female shaping means and coacting means...
Patent
1997-07-10
1999-02-02
Mackey, James P.
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Toroidal or annular female shaping means and coacting means...
249141, 425 281, 425812, B29C 3310
Patent
active
058661719
ABSTRACT:
A mold for tire vulcanization comprises a plurality of segments forming respectively a part of a circular interior complementary to land portions and groove portions of the tread portion of a tire product and being separable from each other in the tire circumferential direction, and each of the segments comprising a plurality of pieces forming said circular interior part and a block supporting the pieces, wherein each of the pieces comprises a combination of a matrix metal and a core made of a different kind of material which is preferably fitted to a through hole of the matrix metal and has a lower coefficient of thermal expansion than that of the matrix metal. In a method of manufacturing the mold, upon casting the matrix metal, the matrix metal is cast around the core with a higher fusion point than that of the matrix metal. The invention provides a mold for tire vulcanization by which a tire having excellent appearance can be obtained and production of defective tires upon vulcanization can be decreased, and a manufacturing method thereof, without increase of cost.
REFERENCES:
patent: 3692090 (1972-09-01), Brobeck et al.
patent: 5204036 (1993-04-01), MacMillan et al.
patent: 5234326 (1993-08-01), Galli et al.
patent: 5290163 (1994-03-01), Katsumata et al.
patent: 5340294 (1994-08-01), Kata
patent: 5382402 (1995-01-01), Espie et al.
Bridgestone Corporation
Mackey James P.
LandOfFree
Mold for tire vulcanization and manufacturing method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mold for tire vulcanization and manufacturing method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold for tire vulcanization and manufacturing method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1114869