×

Marble tube toy

  • US 3,135,512 A
  • Filed: 06/04/1963
  • Issued: 06/02/1964
  • Est. Priority Date: 06/04/1963
  • Status: Expired due to Term
First Claim
Patent Images

1. AN AMUSING AND EDUCATIONAL DEVICE COMPRISING A CYLINDRICAL TUBE, FLIGHTS IN SAID TUBE ARRANGED ON TWO SIDES OF A LONGITUDINAL DIAMETRIC PLANE, SAID FLIGHTS BEING PERPENDICULAR TO SAID PLANE AND HAVING INNER EDGES PARALLEL THERETO, BUT SPACED THEREFROM, EACH OF SAID FLIGHTS ON ONE SIDE OF SAID PLANE BEING AT AN OBLIQUE ANGLE IN ONE DIRECTION WITH RESPECT TO A DIAMETRIC LONGITUDINAL SECOND PLANE PERPENDICULAR TO SAID FIRST PLANE, AND EACH OF THE FLIGHTS AT THE OTHER SIDE OF SAID FIRST PLANE BEING AT AN OBLIQUE ANGLE IN THE OTHER DIRECTION WITH RESPECT TO THE SECOND PLANE, THE FLIGHTS ON THE TWO SIDES BEING STAGGERED LONGITUDINALLY OF THE CYLINDER, WITH RESPECT TO ONE ANOTHER.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×