They Invented What? (No. 16)
U.S. Pat. No. 5,443,036: Method of exercising a cat.
What is claimed is:
1. A method of inducing aerobic exercise in an unrestrained cat comprising the steps of: (a) directing an intense coherent beam of invisible light produced by a hand-held laser apparatus to produce a bright highly-focused pattern of light at the intersection of the beam and an opaque surface, said pattern being of visual interest to a cat; and (b) selectively redirecting said beam out of the cat’s immediate reach to induce said cat to run and chase said beam and pattern of light around an exercise area.
2. The method of claim 1 wherein said bright pattern of light is small in area relative to a paw of the cat.
3. The method of claim 1 wherein said beam remains invisible between said laser and said opaque surface until impinging on said opaque surface.
4. The method of claim 1 wherein step (b) includes sweeping said beam at an angular speed to cause said pattern to move along said opaque surface at a speed in the range of five to twenty-five feet per second.