Device for manufacturing closed hollow bodies in elastomeric mat

Details Device for manufacturing closed hollow bodies in elastomeric mat Device for manufacturing closed hollow bodies in elastomeric mat

1981-10-30

1983-10-11

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Preform assembly means and means for bonding of plural...

Vulcanizing or curing means including a conforming preform...

425504, 425515, 425519, 425521, 425548, 425552, 425588, B29H 500, B29H 700

Patent

active

044089805

ABSTRACT:
A process and a device for forming a tennis ball by the formation of two semispherical bowls in crude elastomeric material each having on its border a structural shape that is deformed by compression when the two semispherical bowls are pressed one against the other while a depressurization is effected in the joining zone of the two semispherical bowls on the outside of them.

REFERENCES:
patent: 1157420 (1915-10-01), Roberts
patent: 1365462 (1921-01-01), Crawford
patent: 2726925 (1955-12-01), Saulino
patent: 2899711 (1959-08-01), Hawkins et al.
patent: 3825457 (1974-07-01), Holroyd et al.
patent: 3933967 (1976-01-01), Taylor
patent: 4028042 (1977-06-01), Goodpruau et al.

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