Plastic article or earthenware shaping or treating: apparatus – Shaping means employing anatomical body or portion thereof
Patent
1994-01-31
1995-11-28
Kuhns, Allan R.
Plastic article or earthenware shaping or treating: apparatus
Shaping means employing anatomical body or portion thereof
425 3, 425163, 425DIG33, 249 55, 249155, 264222, B28B 702
Patent
active
054705908
ABSTRACT:
A reusable die for the manufacture of molded seat cushions that includes a first device for forming a positive profile of a contoured surface, such as a seating support surface, from data obtained for defining the positive surface profile; and a second device for forming a negative profile of the contoured surface, whereby the first surface is adapted to be maintained in contact with the second surface. The first device includes a plurality of rods adapted to define the positive profile. The second device also includes a plurality of rods and a deformable member, such as a wire mesh, that coact with the rods of the first device to form the negative profile. The rods of both the first device and the second device are adapted to be locked in place. A sealing surface is vacuum formed over the negative profile, which then forms a wall of a foam mold. Liquid foam material is then injected in the mold and permitted to cure thereby forming a contoured seat cushion. Also disclosed is a method to manufacture a contoured seat cushion.
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Brienza David M.
Brienza Michael J.
Brubaker Clifford E.
Kuhns Allan R.
University of Pittsburgh
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