Muscle developing exercise device
US4426077A · kind A · utility
Inventor
Key dates
| Filing date | Mar 19, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Mar 19, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B21/4047
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An elongated lever arm has one of its end portions pivotally connected to an upright of a box frame and extends generally horizontally inward into the frame opening. A cable guided by one or more pulleys or rollers is connected to the other end portion of the lever arm and is pulled manually by a user to swing the lever arm. A force-applying or resistance element is connected between the base of the frame and any one of several points along the length of the lever arm between its pivot and the cable. The point of connection of the resistance element to the lever arm can be changed to adjust its effective force resisting swinging of the lever arm. A mechanical stop mechanism is provided to maintain the lever arm horizontal and to counteract the force of the resistance element so that the force adjustment can be made quickly and easily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.