Be careful the next time you are playing with your cat – you might be infringing the “method of inducing aerobic exercise in an unrestrained cat” protected by U.S. patent 5,443,036.
The patented method comprises two steps:
“(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.”
In other words, the patent essentially covers shining a laser light near a cat and then moving the light so that the cat chases it.
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