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Kazumasa Harasawa

Tokyo, JP

Kazumasa Harasawa Patent applications
Patent application numberTitlePublished
20080268990Toy Ball - To provide a toy ball which includes an air plug which facilitates the injection and discharge of air and which does not have to be plugged immediately after the completion of air injection, a toy ball is made up of a ball main body which has an air hole in a predetermined position and which is formed into a spherical body by injecting air into an interior thereof and a hollow rod-like air plug which is freely detachably mounted in the air hole in the ball main body and which allows air to be injected therethrough while kept mounted in the air hole, and the air plug is made up of a pipe-like air injecting pipe having an enlarged portion at an outer end portion thereof, an air flow-in member which is mounted at an inner end portion of the air injecting pipe and which has a space in an interior thereof, and a spherical valve which is inserted in the space in the air flow-in member in such a manner as to be sorbable movable state to a distal end of the air injecting pipe so as to be secured thereto.10-30-2008