Leg exercise machine
US5106081A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Jan 28, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/09
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A leg exercise machine includes a frame having a seat connected thereto for supporting a user in a seated position thereon. A foot engaging member is adapted for engaging the feet of a user and receiving force from the user leg. The foot engaging member is pivotally mounted on the frame by a four-bar linkage which includes first and second lever arms pivotably mounted on the frame. The pivotal mounting of the lever arms provides for back and forth movement along a path of travel and about an instantaneous (changing) axis of rotation for changing the angle of inclination of the foot engaging member so that a force substantially normal to the foot engaging member is directed substantially up the leg and tibia during corresponding movement of the user. The second lever arm is operatively connected to a weight stack for transmitting the pivotal back and forth movement of the leg engaging member to movement of the weight stack to thereby exercise the legs of a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.