Bladder shell for inflatable balls
US6949276B2 · kind B2 · utility
3Cited by
9References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A bladder shell for inflatable balls having a layer of blended synthetic latex and natural rubber latex compounded with an anti-oxidant, an activator, an accelerator, a thickening agent, a wetting agent, and a stabilizer etc. to form a low air permeability and high bounce bladder shell having thickness of between 0.25 mm to 3.0 mm. Also disclosed is a process for the preparation of the bladder shell that includes dipping former in a bath of blended natural rubber latex and synthetic latex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.