Bi-directional wrist exercise device
US8974351B2 · kind B2 · utility
12Cited by
4References
13Claims
0Family size
Inventor
Key dates
| Filing date | Aug 6, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Apr 6, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2023/003
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A wrist exercise device includes a housing having circular portions, a grip handle extending across an inner area of each circular portion of the housing, with both ends of each grip handle being rotatably engaged in a circular direction with the circular portion of the housing, and a spring positioned within each circular portion of the housing. The elastic force of the spring between the grip handle and the housing is increased when the grip handle rotates in any direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.