Folding device for treadmills
US6746374B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2210/50
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A treadmill includes a base which has two side tubes and each side tube has a slot defined in an inside thereof and an aperture is defined in an underside of each of the two side tubes. The two apertures communicate with an interior of the two side tubes. A folding device has a shaft with its two ends inserted in the two slots and two rollers are connected to the two ends of the shaft. Two side frames are connected to the shaft and two sides of an operation frame are pivotally connected to the two side frames. Two links are pivotally connected between the two side frames and the base. When folding the operation frame at an upright position, the two rollers are moved in the side tubes of the base and drop through the apertures to contact the floor so as to provide better support of the treadmill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.