Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Reexamination Certificate
2008-07-08
2008-07-08
Davis, Robert B (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
Reexamination Certificate
active
07396221
ABSTRACT:
The mould comprises a punch (10) having an outer surface (11′) arranged to engage the container tubular body (51) as an exact fit, and an end portion (13) projecting axially from the lower end of the cylindrical outer surface (11′), and a die (30) arranged to form, in combination with the lower surface (13′) of the punch, a cavity (F) for forming the headpiece (52) of the container; the die (30) has a concave surface (32′) arranged to receive as an exact fit, by axial penetration, the lower end of the cylindrical outer surface (11′) of the punch together with the lower end of the tubular body (51) of the container. The headpiece (52) is formed within the forming cavity (F). According to the invention, the punch (10′) comprises a radial deformation means (22, 25, 62, 65), positioned on its outer surface (11′) and extending annularly along the entire circumference of this surface to act on the tubular body (51) of the container, and is arranged to assume a normal position in which its outer surface does not project radially from the cylindrical outer surface (11′) of the punch, and an active position in which it is urged in a centrifugal direction in such a manner as to press the tubular body (51) against the opposing surface of the die, means being provided to urge the radial deformation means (22, 25, 62, 65) in the centrifugal direction during the forming of the container headpiece (52).
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Bergami Stefano
Zuffa Zeno
Browdy and Neimark
Davis Robert B
Sacmi - Cooperativa Meccanici Imola - Soc. Coop. A.R.L.
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