Exercise devices – User manipulated force resisting apparatus – component... – Utilizing fluid resistance
Patent
1992-11-19
1993-08-17
Crow, Stephen R.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing fluid resistance
482 53, A63B 2204, A63B 21008
Patent
active
052364070
ABSTRACT:
A hydraulic exerciser includes a base and a pair of driven units which are mounted pivotably on the base. A rigid tubular connector is secured on the base and extends between the driven units. The tubular connector has two ends which are provided with an annular peripheral groove and a fluid hole that is formed in the peripheral groove. Each of a pair of hydraulic cylinders includes a cylinder body, a piston movably disposed inside the cylinder body, a piston rod connected to the piston and having one end which extends out of the cylinder body and which is mounted pivotably to a respective one of the driven units, and a plug which is secured on one end of the cylinder body and which mounts pivotably the cylinder body on a respective one of the two ends of the tubular connector. The piston, the cylinder body and the plug cooperatively define a volume variable fluid chamber which is filled with hydraulic fluid. The plug is formed with a fluid hole that is aligned with the peripheral groove so as to communicate the fluid chamber and the interior of the tubular connector.
REFERENCES:
patent: 4685666 (1987-08-01), DeCloux
patent: 4733858 (1988-03-01), Lan
patent: 4946162 (1990-08-01), Lubie
patent: 5139470 (1992-08-01), Wang
Crow Stephen R.
Lee Wang Industry Ltd.
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