Legless chair type seesaw exercise device
AssigneeKabushiki Kaisha SANKEI
InventorsMaika Ito, Michiyo Ito
Life of this patent
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Abstract
A seesaw exercise device includes a rigid frame that has a pair of left and right side walls; and a seesaw base that is interposed between the two side walls facing each other, wherein a central portion of a horizontal base plate of the seesaw base is pivotally supported to the two side walls of the frame by a round shaft having a diameter larger than a thickness of the base plate itself, and when the base plate is pushed down by a user, the base plate performs a seesaw motion slowly in a front-rear direction while drawing an arc along a circumferential surface of the round shaft.
Claims9
A legless chair type seesaw exercise device comprising:
- a frame that is rigid and has a pair of left and right side walls whose upper end portions function as handrails or armrests;
- and
- a seesaw base that has a horizontal base plate which is interposed between the two side walls facing each other, wherein
- a rotary shaft for pivotally supporting a central portion of the base plate of the seesaw base to the two side walls of the frame is formed as a round shaft having a diameter larger than a thickness of the base plate itself and is extended horizontally through the two side walls of the frame,
- the base plate is attached to and integrated with the round shaft from above the round shaft,
- the base plate is attached to and integrated with a pair of front and rear parallel reinforcing bars, which hold the round shaft therebetween, from above the reinforcing bars, and
- the base plate of the seesaw base slowly performs a seesaw motion in a front-rear direction while drawing an arc along a circumferential surface of the round shaft when the base plate of the seesaw base is pushed down by a user.
Dependencies are inferred from the claim text.