Molds and methods for rotational molding

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

Reexamination Certificate

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C264S311000, C425S425000

Reexamination Certificate

active

07833459

ABSTRACT:
Molds and methods for rotational molding are disclosed. The molds for rotationally molding may include an interior surface, an exterior surface, an opening, and a post. The interior surface may define a molding cavity. The interior surface may include a first portion and a second portion disposed opposite the first portion. The opening may extend from the first portion of the interior surface to the exterior surface. The post may extend from the second portion of the interior surface, through the molding cavity, through the opening, and to a distal region.

REFERENCES:
patent: 4049767 (1977-09-01), Vaidya
patent: 4146565 (1979-03-01), Quraishi
patent: 4247279 (1981-01-01), Masters
patent: 4980112 (1990-12-01), Masters
patent: 5039297 (1991-08-01), Masters
patent: 5094607 (1992-03-01), Masters
patent: 2007/0131156 (2007-06-01), Aitken
Beall,Rotational Molding, 1998, Hanser/Gardner Publications, Inc., Cincinnati, Ohio, USA.
Nugent,Rotational Molding: A Practical Guide, 2001, available from www.paulnugent.com, USA.
Finn Kayaks, “Excerpts from Finn Kayaks website” at http://www.finnayaks.com, accessed Nov. 19, 2009, Australia.
“Photos of Finn Kayaks Gizmo,” photos taken during 2009 of the scupper tube on the Finn Kayaks Gizmo, which kayak applicants believe has been in production in Australia and on sale in Australia, both sine approximately 2006.

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