Ball for ball game and method for manufacturing the same
US7753813B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Aug 15, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2243/0095
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The ball for a ball game of the invention includes a fabric layer 1 having a spherical 12-hedron where twelve right pentagonal fabric pieces 2 are sewn together. The marginal edges of the fabric piece being folded by 90 degrees, and the marginal edges are sewn together with a sewing machine. The fabric layer is then reversed through cross-like slits 5a, 5b formed in the fabric layer in a location opposite to a valve opening 5 (also formed in the fabric layer) in such a manner that the marginal edges are located on an inner side of the fabric layer. After the bladder is accommodated within the fabric layer through the closure hole 5, the hole 5 is closed by a patch. Onto a surface of the fabric layer, there is adhered the panels. Thereby, the ball for a ball game having no unevenness and soft feeling is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.