Hydraulic exercising machines
US4799676A · kind A · utility
14Cited by
8References
6Claims
0Family size
Inventors
Key dates
| Filing date | Aug 25, 1986 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Aug 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S482/901
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An exercising machine incorporates one or a pair of hydraulic rams to be actuated by a user. The resistance to effort within the hydraulic circuit can be increased by operating a pump so that hydraulic fluid enters a pressure accumulator to compress gas therein. A pressure gauge indicates the pressure level set and the circuits for the two rams can be set individually, selectively bleeding off hydraulic fluid to a reservoir by operation of valves. Consequently the exercising machine can be set to a number of required operating levels without resorting to the use of weights as with conventional exercising machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.