Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1975-06-12
1976-08-10
Lazarus, Richard B.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
425DIG204, 425290, 264 89, 264 90, 264 98, B29D 2303
Patent
active
039738965
ABSTRACT:
An apparatus for blow molding including a blow mold having mold halves which are relatively movable and receive a parison therebetween. A mandrel is carried by portions of the mold and is movable between an extended position and a retracted position. The mandrel has a free end with a vacuum surface area portion with the end being engageable with the parison when the mandrel is in its extended position. A blow needle is reciprocably mounted in the mandrel and insertion of same into the parison is facilitated by the parison being held against the end of the mandrel by vacuum.
REFERENCES:
patent: 3272681 (1966-09-01), Langecher
patent: 3305891 (1967-02-01), Nozaki
patent: 3342916 (1967-09-01), Peters
patent: 3450805 (1969-06-01), Chesser
patent: 3488801 (1970-01-01), Hariely
patent: 3492106 (1970-01-01), Peters et al.
patent: 3500497 (1970-03-01), Culpepper
patent: 3764644 (1973-10-01), Robinson
Lazarus Richard B.
Phillips Petroleum Company
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