Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Internal mold – form or support for toroid
Patent
1977-09-06
1978-09-26
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Internal mold, form or support for toroid
425 35, 425 56, B29H 518
Patent
active
041165969
ABSTRACT:
A contractible segmented rigid core of a tire-curing mold is disclosed comprising a plurality of sectors, and means which permit a reduction of the transversal dimensions of the sectors to facilitate removal thereof from the cured tire, said means comprising forming each of the sectors in three parts transversely of the mold, one a central part provided with means for producing a movement under the action of resistant elastic or resilient biasing means along the symmetrical plane of the sector, and two lateral parts being adapted to oscillate, in contrast with the elastic or resilient biasing means, with respect to an axis in the symmetrical plane of the sector and thereby having reduced transversal dimensions. Means are included for preventing any displacement of the sectors when in their expanded position relative to the parts which comprise them, no matter what stresses may be applied to them during the tire curing operation.
REFERENCES:
patent: 1389441 (1921-08-01), DeMattia
patent: 1429957 (1922-09-01), Mason
patent: 3784338 (1974-01-01), Previati
patent: 3994650 (1976-11-01), Nishimura et al.
patent: 4063861 (1977-12-01), Schmidt et al.
Flint, Jr. J. Howard
Industrie Pirelli S.p.A.
LandOfFree
Contractible segmented rigid core for a tire-curing mold does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contractible segmented rigid core for a tire-curing mold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contractible segmented rigid core for a tire-curing mold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2086080