Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...
Patent
1990-03-19
1991-04-30
Chiesa, Richard L.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling rate of movement of molding material or its...
523099, 52589, 264 457, 264311, 425150, 425435, 428 33, 428 53, 4283188, 4283193, B29C 4106, B29C 4152, B32B 520
Patent
active
050116363
ABSTRACT:
An integrally molded plastic structural unit includes spaced support members joined by a web section disposed therebetween, each of the support members including spaced face sections and an intermediate section therebetween. Each face section includes a stressed hard outer skin. The intermediate section includes a peripheral frame section of high density. The web section includes high density connector members extending between adjoining face sections of the spaced support members. Each of the support members includes mateable sections along at least two edges thereof, with each of the mateable sections including at least five alternating raised and recessed areas forming an asymmetrical pattern along the length of each mateable section. The pattern is the same or a reverse pattern thereof along each mateable section of the same unit and of adjacent units with which it will be assembled. The mateable sections extend beyond the face members or are recessed below the face members on the edges of the unit a substantially equal distance. Also, a method of molding the structural unit.
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Chiesa Richard L.
Urban Arthur L.
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