Exercise apparatus with reciprocating levers coupled by resilient linkage for semi-dependent action
US5322491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1992 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Jun 23, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An exercise apparatus (10) includes a frame (12) on which left and right levers (14) and (16) are pivotally mounted. A resistance mechanism (18) resists pivoting of the levers between nominal and displaced positions. The levers are coupled by a linkage (20), including an elongate coil spring (22) and an internal extension-limiting cable (24). The linkage normally acts to urge each of the first and second levers toward its respective nominal position when the other of the first and second levers is in a displaced position. The coil spring is capable of elongating to permit limited non-synchronous motion of the left and right levers, with the elongation of the coil spring being limited by the presence of the extension-limiting cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.