Rotating display
AssigneeTrans-World Manufacturing Corporation
InventorsJohn G. Dewees, George N. Morgese
Life of this patent
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Abstract
A rotating display which gives the illusion of simultaneous movement in both the clockwise and counterclockwise directions is disclosed. The rotary display inclues a rotary reflector having a plurality of light reflecting surfaces formed thereon. Each of the light reflecting surfaces is planar and lies in a plane different from each of the reflecting surfaces located adjacent thereto. Means for rotating the reflector about a predetermined axis is provided. A reflective diffraction grating surrounds the reflector and reflects light emitted from a light source onto the reflector and out towards the observer of the display.
Claims14
A rotary display, comprising:
- a rotary reflector having a plurality of light reflecting surfaces formed thereon, each of said surfaces being planar and lying in a different plane from each of the reflecting surfaces located adjacent thereto:
- means for rotating said rotary reflector about a predetermined axis;
- a reflective diffraction grating surrounding said rotary reflector;
- and
- a light source located at a position which will cause light emitting from said light source to reflect off of said diffraction grating as colored light and thereafter to impinge onto the reflecting surfaces of said rotary reflector whereby said display provides the illusion that when said reflector is rotating in a first direction, said colored light appears to rotate in a second opposite direction.
Dependencies are inferred from the claim text.