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Group use toy structural construction set

  • US 4,352,255 A
  • Filed: 12/04/1980
  • Issued: 10/05/1982
  • Est. Priority Date: 12/04/1980
  • Status: Expired due to Term
First Claim
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1. Group use toy structural construction set comprising:

  • a. straight tubes, each having a tubular member body of resilient plastic, each of said tubes having at each end portion at least one saw-cut type slot through its wall parallel to the longitudinal axis thereof;

    b. circular hoops, each having a tubular member body of resilient plastic, with the outside diameter of said tubular member body of said hoops being the same as that of said tubular member body of said tubes;

    c. tubular member body-to-tube end connector means including C-shaped means for releasable external engagement with the tubular member body of one of said tubes or of one of said hoops and insertable means for releasable internal engagement with an end of one of said tubes;

    d. tubular member body-to-tubular member body connector means including two C-shaped means for releasable external interengagement of said tubular member bodies of two of said tubes, two of said hoops, or one of said tubes and one of said hoops;

    e. tube end-to-tube end connector means including at least two insertable means for releasable internal interengagement of of ends of a plurality of said tubes, with said interengagement occurring at a common junction point;

    f. a wheel hub block having a plurality of equally spaced spoke holes disposed radially around the periphery of said hub block and with the axes of said spoke holes being in a common plane, said spoke holes having a depth and diameter sufficient to receive and frictionally hold said slotted ends of said tubes, said hub block also having an axle hole passing through its center and normal to said plane of said axes of said spoke holes, the diameter of said axle hole being slightly more than the outside diameter of said tubes, whereby said axle hole can pass one of said tubes as an axle so as to permit said hub block to be free to revolve around one of said tubes.

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