Ball for ball game
AssigneeShinji Katsurayama
InventorsShinji Katsurayama, Akio Takagi, Hironori Sato, Mitsuyoshi Ishikawa, Tatsuki Shimojo
Life of this patent
Estimating the term…
Abstract
This ball for ball game includes: a spherical skin portion formed to be transparent at least partially so that inside of an internal space is visible from outside; a tubular retention portion provided in the internal space and extending so as to connect two poles of the skin portion, the tubular retention portion having a surrounded space therein; and a retained object retained in a visible state between the two poles in the surrounded space. The tubular retention portion has a shape helically twisted between the two poles. The tubular retention portion is twisted with an angle not less than 135° and not greater than 270° between the two poles.
Claims8
A ball for ball game, comprising:
- a spherical skin portion formed to be transparent at least partially so that inside of an internal space is visible from outside;
- a tubular retention portion provided in the internal space and extending so as to connect two poles of the skin portion, the tubular retention portion having a surrounded space therein;
- and
- a retained object retained in a visible state between the two poles in the surrounded space, wherein
- the tubular retention portion has a shape helically twisted between the two poles, and
- the tubular retention portion is twisted with an angle not less than 135° and not greater than 270° between the two poles.
Dependencies are inferred from the claim text.