Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1993-02-26
1994-08-09
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
425 2, 425425, 425453, B29C 3340
Patent
active
053364597
ABSTRACT:
A method of forming a bodyweight supporting, pressure-equalized impression of the foot, generated by an apparatus that creates a dynamic state to the foot, simulating the gait cycle of human ambulation. The foot and impressionable material are placed on granular particles within a container. The container is mounted to a base with a turntable between them. A planar, elongate insert is partially inserted within the granular particles. The base has a guide pin that fits through an opening in the container into a track in the insert. The insert is removable by pulling and when the insert is removed the granular particles and accompanying foot shift to fill the volume previously occupied by the insert. The shifting movement begins at the heel of the foot and continues progressively past the toes. Also, as the insert is removed the container pivots on the turntable in adduction. The inserts track slides along the guide pin controlling the amount and timing of the twist. The impressionable material captures an impression of the foot as it progressively settles into a new supported position in a manner that simulates the human gait cycle.
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