Top with actuator rod
OwnerReinhard Hertelinventor
Life of this patent
Estimating the term…
Abstract
A toy comprising a hollow member and a rod for operating the hollow member. The hollow member has an opening at one of two ends thereof, a smooth circular boundary edge at said one end at the inside of the opening, a spherical rotationally symmetrical surface on its outside at its other end, the axis of symmetry of said surface being coaxial relative to the upper smooth circular boundary edge. Furthermore the toy has a circular annular guide surface disposed within the hollow member adjacent said other end thereof, said guide surface being coaxial with respect to said axis. The toy might have a flange-like edge portion and vanes which extend radially and which are inclined relative to a plane extending normal to an axis of rotation of the member.
Claims18
A top, comprising a hollow body having a longitudinal axis, an outer surface of revolution formed about said axis, an upper open end, an opposite closed end, said outer surface having a part-spherical convex outer surface portion coaxial with said axis and adapted to frictionally engage a supporting surface on which the top is to be spun, and an inner surface having at said closed end a concave surface portion coaxial with said axis and a circular surface upwardly spaced therefrom adjacent said open end and also coaxial with said axis;
- and an actuator rod adapted to frictionally engage with one end thereof said inner surface portion and with a portion upwardly spaced from said end, said circular surface in such a manner that the axis of the top is inclined at an angle of less than 90.degree. to the supporting surface and so that said convex outer part-spherical portion will engage said supporting surface at a point outside said axis, whereby when said hollow body is pushed along said supporting surface by said actuator rod while maintaining said axis inclined at said angle by the frictional contact of the rod with said surface portion and with said circular surface, the top will be rotated about its axis due to frictional contact with said supporting surface along a path transverse to said axis and passing through said point.
Dependencies are inferred from the claim text.