US PATENT SUBCLASS 473 / 604
.~ Having hollow core or bladder enclosed within cover (e.g., basketball, soccer-ball, tennis ball, etc.)

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

569  DF  PROJECTILE, PER SE; PART THEREOF OR ACCESSORY THEREFOR {28}
604.~ Having hollow core or bladder enclosed within cover (e.g., basketball, soccer-ball, tennis ball, etc.) {2}
605  DF  .~.~> And having intermediate layer composed of wrapping of strands or strips between cover and core or bladder
606  DF  .~.~> Cover is composed of feltlike, napped, or cloth material (e.g., tennis ball, etc.)

DEFINITION

Classification: 473/604

Having hollow core or bladder enclosed within cover (e.g., basketball, soccer ball, tennis ball, etc.):

(under subclass 569) Subject matter wherein the projectile comprises a centrally disposed member having therein at least one void greater than about ten percent of the total volume of the projectile and wherein the centrally disposed member is overlaid by an enclosing outermost layer or envelope of material.

(1) Note. Both the core or cover may themselves each be made up from one or more layers or windings of material, and there may be one or more additional layers or windings of material located between the core and cover.