Adjustable hydraulic load-resisting mechanisms for exercise machines
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United States of America Patent
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Jun 14, 1988
Grant Date -
N/A
app pub date -
Oct 9, 1986
filing date -
Oct 9, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exercise rowing machine has a frame and a swing arm pivotally connected thereto which is manually pushed and pulled in opposition to an adjustable hydraulic load-resisting mechanism pivotally connected between the frame and the arm. This mechanism has a pair of spring-loaded, independently adjustable flow control valves at opposite ends for controlling flow to and from opposite ends of a cylinder which a double-acting piston reciprocates responsive to movement of the swing arm. The range of adjustment of the spring pressure on the valves is preset.
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