Sports posts
US6030301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B61/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention relates to sports post for athletics, which are light, tough, easily to set up or taken down. The sports post have two or more fiber reinforced plastic hollow tubes that are fitted and connected together. A screw-type extension and retraction mechanism is built within the posts. The sports posts have a rod shaped member fixed to one hollow tube that passes through the through-hole of an element fixed to another hollow tube. Another embodiment of the present invention includes sports posts in which the reinforcing fiber layer from which the hollow tubes are composed include, a laminate structure of sheet-shaped material. The sports posts include a laminate structure of a sheet shaped material in which the fiber is carbon fiber and filaments thereof are unidirectionally arranged, and of a filament bundle structure layer which can be seen from outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.