B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/56 (2006.01) B29C 33/20 (2006.01) B29C 49/06 (2006.01)
Patent
CA 2148427
A blow mold assembly has a first and second carriage, and air cylindersfor moving the first and second carriages along guide rods between an open position and a closed position. A first and second mold half are coupled respectively to the first and second carriages to define in the closed position at least one blow mold cavity. A lock situated on confronting surfaces of the first and second carriages locks the carriages together when the carriages are located in the closed position. The lock includes a pair of channel defining members coupled to one of the carriages having opposed edges including a series of teeth separated by interdental spaces, and a corresponding pair of cooperating toothed members coupled to another of the carriages and arranged to penetrate the interdental spaces. Each first mold half is movably mounted to the first carriage and is biased away from the second mold half. A chamber is situated between the first carriage and the first mold half having an opening for introducing fluid into the chamber in sufficient amount and under sufficient pressure to overcome the biasing forces and to resist any pressure applied to the first blow mold half during blow molding of an article within the blow mold cavity insuring continuous mating of the two mold halves defining each blow mold cavity.
Maggert Lynn R.
Meiring David P.
Electra Form Inc.
Finlayson & Singlehurst
LandOfFree
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