US PATENT SUBCLASS 473 / 456
.~.~.~.~ Having subdivided strike zone

Current as of: June, 1999
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473 /   HD   GAMES USING TANGIBLE PROJECTILE

415  DF  PLAYING FIELD OR COURT GAME; GAME ELEMENT OR ACCESSORY THEREFOR OTHER THAN PROJECTOR OR PROJECTILE, PER SE {14}
422  DF  .~ Practice or training device {7}
451  DF  .~.~ For game in which play involves base running (e.g., for baseball, cricket, etc.) {5}
454  DF  .~.~.~ Pitcher's target {2}
456.~.~.~.~ Having subdivided strike zone

DEFINITION

Classification: 473/456

Having subdivided strike zone:

(under subclass 454) Practice or training device wherein the pitcher's target includes an area corresponding to the "strike zone" (e.g., the rectangular area above home plate defined by an upper horizontal edge at the armpit height of a batter, a lower horizontal edge at a point just above the knees of the batter, an inner vertical edge above the edge of home plate proximal the batter, and an outer vertical above the distal edge of home plate, etc.), through which some portion of the projectile must pass when pitched by the pitcher to attain a "strike" against the batter, which strike zone is subdivided into a plurality of smaller zones.