Water filled hoop construction
US6494760B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 2002 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jul 3, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/5218
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An exercise and/or play hoop, made of semi-rigid plastic tubing, is partially filed with water (30) to between ⅙ and ½ full, most preferably ¼ full. The water improves the dynamics of the hoop and makes it easier to keep the hoop elevated by gyration. The hoop is made of a length of hoop tube (10) bent into a circle. A coupling tube (20) is inserted where the ends (11, 12) abut, spanning the joint. The coupling tube includes a bore (25) through which the liquid flows circumferentially around inside the hoop, and past the joint. The joint is sealed on the outside with a shrink-plastic tube. A decorative, preferably iridescent cover (18) may cover the hoop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.