초록 ▼

An insulated molded plastic structural unit includes spaced face portions, an intermediate portion and interlocking portions. The face portions each include an integrally formed stressed hard outer skin section and the intermediate portion includes an insulating core section. The interlocking portio

An insulated molded plastic structural unit includes spaced face portions, an intermediate portion and interlocking portions. The face portions each include an integrally formed stressed hard outer skin section and the intermediate portion includes an insulating core section. The interlocking portions include mateable sections along at least two edges of each unit, each mateable section including at least five alternating raised and recessed areas forming an asymmetrical pattern along the length thereof. The pattern is the same or a reverse thereof along each mateable section of the same unit and of adjacent units to which it will be joined. Particular mateable sections either extend beyond the face portions or are recessed below the face portions a substantially equal distance. Continuous molding apparatus includes a raw material supplying portion, a mixing portion, a molding portion and a control portion. The molding portion includes at least one rotatable mold assembly with at least two separable mold sections. At least one mold section includes a plurality of rotatable mold surface elements with each having a plurality of different mold surface segments.

대표청구항 ▼

An insulated molded plastic structural unit including spaced face portions, an intermediate portion and interlocking portions; said face portions each including an integrally formed stressed hard outer skin section, said intermediate portion including an insulating core section; said interlocking po

An insulated molded plastic structural unit including spaced face portions, an intermediate portion and interlocking portions; said face portions each including an integrally formed stressed hard outer skin section, said intermediate portion including an insulating core section; said interlocking portions including mateable sections along at least two edges of said unit, each of said mateable sections including at least five alternating raised and recessed areas forming an asymmetrical pattern along the length of each mateable section, the pattern being the same or a reverse pattern thereof along each mateable section of the same unit and of adjacent units to which it will be joined, said mateable sections extending beyond said face portions or being recessed below said face portions on said edges of said unit a substantially equal distance; whereby adjacent units are interconnected by engaging a recessed mateable section of one unit with a raised mateable section of an adjacent unit or vice versa. Continuous molding apparatus including a raw material supplying portion, a mixing portion, a molding portion and a control portion; said molding portion including at least one rotatable mold assembly, said mold assembly including at least two separable mold sections, at least one of said mold sections including a plurality of rotatable mold surface elements, each of said mold surface elements being rotatably supported substantially parallel to adjacent mold section surfaces and spaced therefrom a distance equal to that between an axis and an outer surface thereof, a plurality of different mold surface segments arranged symmetrically around said axis; said control portion including pump means, valve means and flow monitoring means for said raw material supplying portion, independent drive means for rotation of said mold assembly, separation of said mold sections and retraction and rotation of said mold surface elements; programmable memory means and actuating means responsive thereto respectively controlling and activating said pump means, said valve means and said drive means.