Exercise devices – User manipulated force resisting apparatus – component... – Utilizing fluid resistance
Patent
1998-07-15
2000-05-02
Donnelly, Jerome W.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing fluid resistance
482125, 482140, 482126, A63B 2102
Patent
active
060566760
ABSTRACT:
An inventive exercise device is disclosed for facilitating the strengthening of abdominal and back muscles, and includes a resistance member coupled between a lap engageable base and an arm positioning member. The arm positioning member helps to maintain the back of the user in a substantially upright position as the arm positioning member applies and releases reciprocatively and alternatingly in a substantially vertical path of travel of the upper body of the user against the force on the resistance member during repetitions of use of the device. The resistance member resists substantially vertical downward movement relative to the base member to enhance the development of muscle strength by enabling the upper body of the user to contract and expand reciprocatively vertically without leaning forwardly in a safe and effective manner. The exercise device may have at least one swivel connecting the arm positioning member to the base that allows the exercise device to be used while the user leans left or leans right, thus exercising auxiliary back muscles. Further, the swivel and a torso adjustment assembly allow the user to maintain a comfortable, safe, and effective exercise position.
REFERENCES:
patent: 5069448 (1991-12-01), Shyu
patent: 5071119 (1991-12-01), Johnson
patent: 5232425 (1993-08-01), Miller
patent: 5637066 (1997-06-01), Chang
patent: 5695436 (1997-12-01), Huang
patent: 5759138 (1998-06-01), Boland
Donnelly Jerome W.
Kleinke Bernard L.
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