发明名称 |
Hydraulic exercising machines |
摘要 |
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.
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申请公布号 |
US4799676(A) |
申请公布日期 |
1989.01.24 |
申请号 |
US19860899960 |
申请日期 |
1986.08.25 |
申请人 |
SHEPPARD, JOHN H.;MOORE, JONATHAN D. |
发明人 |
SHEPPARD, JOHN H.;MOORE, JONATHAN D. |
分类号 |
A63B21/008;(IPC1-7):A63B21/00 |
主分类号 |
A63B21/008 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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