Document Type and Number:
Japanese Patent JPS55101156
Kind Code:
U
Abstract:
There is provided a ball for sports in which an air injection valve attached to a rubber inner tube is covered by outer layers so as not to be exposed. An aperture for insertion of an air injection needle is provided in the outer layers so that it is in alignment with the hole for insertion of an air injection needle of the air injection valve.
Application Number:
JP18303778U
Publication Date:
July 14, 1980
Filing Date:
December 29, 1978
Export Citation:
International Classes:
A63B41/12; A63B41/00; A63B41/04; (IPC1-7): A63B41/04
Domestic Patent References:
| JPS5048086A | 1975-04-28 | |||
| JP12010214Y1 |