Motion translation arrangement for exercise machine
US5810701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2023/003
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention relates to a shoulder press machine having a seat, a backrest and fixed framework at the top of which a carriage is mounted. The carriage has a pair of downwardly and forwardly extending, diverging lever arms which are tied together and moved upwardly and downwardly along a major horizontal axis mounted to the framework behind the backrest and a minor horizontal axis offset behind and parallel to the major horizontal axis. As the lever arms are moved together upwardly, they are simultaneously swung inwardly about a pair of parallel, angular pivot axes, the swinging motion being transferred via a pair of transfer links to pivot a pair of sleeves about the minor horizontal axis. As a result of these linkages, a shoulder press machine is provided in which an exerciser's hands rotate or supinate naturally through approximately 20.degree.-30.degree. as the lever arms are pushed upwardly. The inventive machine much more easily accommodates the natural musculoskeletal make-up of the human body without stress to the shoulder joints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.