Exercise devices – User manipulated force resisting apparatus – component... – Utilizing resilient force resistance
Patent
1990-07-18
1992-03-31
Bahr, Robert
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing resilient force resistance
482140, 482145, A63B 2302
Patent
active
051001306
ABSTRACT:
Abdominal exercise apparatus comprising a flexible and resilient board of a length extending from one end near the head portion of a user to an opposing end removed therefrom. The board is constructed to be normally flat in configuration and is bondable into an upwardly curved configuration by upward movement of a user lying thereon to contract and shorten the abdominal muscles with the user's back and head portions in engagement with the board. Handles are removably mounted on the board near the one end thereof. In use, the handles are grasped by the hands of the user during movement to contract and shorten the abdominal muscles and to bend the board upwardly into a concave configuration against the resilient force of the board. During this upward movement, the user's head, neck, shoulder, back, and buttocks portions are supported by the board. Anchoring devices are provided at or near the opposite end of the board to secure the feet, legs or thighs of user thereto. For certain abdominal exercises, the anchoring devices may be used without any handles at the one end of the board.
REFERENCES:
patent: 3117782 (1964-01-01), Johnston
patent: 4307880 (1981-12-01), Abram
patent: 4324399 (1982-04-01), Ridley
patent: 4621809 (1986-11-01), Pearl
patent: 4927139 (1990-05-01), Taltre
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