Chain-like toy of triangular hollow prisms

Claim 1

A continuously chained toy comprising: a plurality of isosceles triangular hollow prism units (1), each hollow prism unit comprising first and second slanted faces (4, 5) slanted at an equal angle, a through-hole (6) at the center of each of the slanted faces, projections (7) provided on a first of said slanted faces (4) around said through-hole (6), and indentations (8) provided on the second of said slanted faces (5) at positions corresponding to the positions of the projections (7); and means for assembling said hollow prism units (1) adjacent one another with a first slanted face (4) of one hollow prism unit in abutment with the second slanted face (5) of the adjacent hollow prism unit, said assembling means including a plurality of connecting means, each connecting means independently connecting adjacent hollow prism units, and each connecting means including a pin (9) mounted in and extending through the through-holes (6) of only a pair of the adjacent slanted faces of a pair of adjacent hollow prism units, said pin terminating at an end interior of a respective hollow prism unit, resilient means (10) mounted on said pin (9) and located interior of at least one of the adjacent hollow prism units and on a side of at least one of said slanted faces which does not face the slanted face of the adjacent hollow prism unit, and a push-nut (11) located interior of at least one of the adjacent hollow prism units and mounted on a free end of said pin (9) and compressing said resilient means to connect a hollow prism unit (1) rotatably with respect to the adjacent hollow prism unit, said resilient means applying a resilient biasing force relative to said slanted faces in the axial direction of said pin (9), said push-nut (11) having an opening (13) in the center thereof which has a diameter slightly smaller than the outer diameter of said pin, said push-nut being fitted on said pin with an interference fit between said pin and said opening (13).