Plastic article or earthenware shaping or treating: apparatus – Means utilizing force from explosive or thermic composition
Patent
1997-08-18
1999-04-20
Davis, Robert
Plastic article or earthenware shaping or treating: apparatus
Means utilizing force from explosive or thermic composition
72 56, 72 62, B21D 2608
Patent
active
058956662
ABSTRACT:
A device for expandingly remodelling a hollow object consisting of a body with a mouth opening and a bottom, for instance a metal can, a blown plastic, for instance PET, bottle or the like, includes: a mould comprising two mould parts, which mould parts are relatively movable between a closed position, in which they bound a mould cavity having a form which corresponds with the desired final form of an object, and an open position in which an object for remodelling can be placed and a remodelled object can be removed; sealing means for sealing the mouth opening against the wall of the closed mould cavity; compression means for increasing the pressure in the object placed in the closed mould cavity such that the object is thereby expanded against the wall of the mould cavity; decompression means for subsequently decreasing this pressure such that the mould parts can be moved to their open position in which a remodelled object can be removed; and has the feature that the decompression means are adapted to temporarily store at least a part of the energy coming available during the decompression and can co-act with the compression means such that at least a part of the stored energy is used for operation of the compression means.
REFERENCES:
patent: 3252312 (1966-05-01), Maier
patent: 3394569 (1968-07-01), Smith
patent: 3908419 (1975-09-01), Brownbill
patent: 5187962 (1993-02-01), Bilko et al.
patent: 5419171 (1995-05-01), Bumgarner
patent: 5585066 (1996-12-01), Weiss
Davis Robert
Thomassen & Drijver-Verblifa B.V.
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