Exercise device
US4815731A · kind A · utility
64Cited by
17References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Oct 23, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2208/0266
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An exercise device for developing various parts of a user's body. A coil tension spring is attached and extends between a pair of cuff strips. The cuff strips are secured into loops by Velcro fastening strips for receiving the wrists and ankles of the user. An elastic cord is attached to metal rings and extends within the coil spring for limiting the separation distance of the cuff strips and to provide increased resistance as the spring is stretched. The spring and cord are secured on the cuff strips with metal rings which extend through loops formed on each of the cuff strips by a reinforcing strip of material sewed on the cuff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.