Carton

Abstract

A carton serving as a package for a Transformable Pyramid, which is a built-up type intellectual teaching aid, is produced from a cardboard divided into two groups of four right triangular faces for folding into first and second pyramidal parts, respectively. The first and the second pyramidal parts in the folded state provide two open-bottomed four-face pyramidal bodies connected and closable to each other to fitly enclose the Transformable Pyramid therein. Instructions of use and color strips showing outer appearance of the Transformable Pyramid may be printed on front and reverse surfaces of the eight faces of the carton. The carton therefore has the advantages of occupying a reduced space, and providing a fit package with instructions to facilitate display and promotion of the packaged goods.

What is claimed is:  
     
         1 . A carton adapted to package an eight-face dual-pyramid product, which is commercially referred to as Transformable Pyramid, comprising a cardboard divided into first and second groups of four right triangular faces that are sequentially connected to one another in a predetermined manner, and an edge between any two said faces adjacent to each other being a folding line along which said cardboard may be folded; 
 said first group of four right triangular faces being folded along said folding lines provided thereon, and a first and a last one of said four faces being locked together through engagement of tag and slit correspondingly provided on outer edges of said first and said last faces, such that a first open-bottomed four-face pyramidal part is formed; and    said second group of four right triangular faces being folded along said folding lines provided thereon, and a first and a last one of said four faces being locked together through engagement of tag and slit correspondingly provided on outer edges of said first and said last faces, such that a second open-bottomed four-face pyramidal part is formed;    said first and said second pyramidal part being connected to each other at a common edge between said first and said second group of four triangular faces; and    said second pyramidal part being closable onto and locked to said first pyramidal part to produce an eight-face dual-pyramid carton through engagement of tags and slits provided on outer edges of three outer faces in said second group of four triangular faces with slits and tags correspondingly provided on outer edges of three outer faces in said first group of four triangular faces.    
     
     
         2 . The carton as claimed in  claim 1 , wherein said four right triangular faces in said first group for forming said first pyramidal part include two pairs of adjacent faces that are connected to each other at a common edge between them to form an equilateral quadrilateral, and said two equilateral quadrilaterals are mirror-symmetrically connected to each other at a common edge between them; and said four right triangular faces in said second group for forming said second pyramidal part being structurally identical to that in said first group.  
     
     
         3 . The carton as claimed in  claim 1 , wherein each of said right triangular faces has an area slightly larger than that of each pyramidal plane of said Transformable Pyramid to be packaged in said carton.