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KNOCKDOWN STRUCTURAL TOYS

  • US 3,640,018 A
  • Filed: 05/18/1970
  • Issued: 02/08/1972
  • Est. Priority Date: 05/18/1970
  • Status: Expired due to Term
First Claim
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1. In a knockdown toy assembly, a. a cubical toy block adapted to have the beaded ends of cylindrical members connected selectively to a plurality of identically dimensioned faces of said block, b. at least one face of said block having a cylindrical projection permanently affixed thereto and extending outwardly therefrom and provided at its free end with an outwardly directed substantially rigid annular rib of a dimension and contour of the same order as the annular beads at the ends of said cylindrical members, c. each of the remaining faces of said cubical block having an annular projection permanently affixed thereto and extending outwardly therefrom and provided at its free end with an inwardly directed annular resilient lip of flexible material adapted to yieldingly engage the annular bead projecting outwardly on the lateral wall at the end of one of said cylindrical members, and d. said outwardly directed annular rib adapted to be detachably coupled to an adjacent structural element through the intermediary of an inwardly directed resilient annular lip on the latter, and said annular lips and rib permitting relative rotary movement between said cylindrical members adapted to be detachably connected to said annular lips, and said structural element adapted to be connected to said annular rib.

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