US Patent 10285380 Semi-hollow ball with internal support structure and airflow passages

A semi-hollow ball for pet play, including an outer shell having a plurality of perforations therethrough, a central inner core disposed in the perforated outer shell, and a plurality of elongate airflow structures extending disposed between, and extending from at least one of, the central inner core and the perforated outer shell. The elongate airflow structures are spaced apart from one another so as to form airflow passages therebetween. The airflow passages are in fluid communication with the perforations in the outer shell such when carried in the mouth of a pet, air passes into the ball through one or more of the perforations, through one or more of the airflow passages, and out of the ball through one or more of the perforations.