22-06-2017 дата публикации
Номер: US20170173384A1
Принадлежит:
An abdominal twist exercise device includes a device frame, front and rear rotational axles, a main handle bar, a rotation converter, an adjustable gear, a disengaging lever, a weight, a weight bar, a support rail, a safety handle bar, rotation counters, and a user platform, such that when the main handle bar rotates to one side, the user platform rotates to an opposing side. A rotation converter can include a front chain sprocket, an intermediate rotational axle, an intermediate chain sprocket, a roller chain, an intermediate gear, a rear gear; or a front belt sprocket, a rear belt sprocket, and a twisted belt, connecting the sprockets. Optionally, the front and rear axles can be telescoping. 1. An abdominal twist exercise device , comprising:a) a device frame;b) a front rotational axle, which is rotationally connected in a lower end to the device frame, such that the front rotational axle extends vertically upwards from the device frame;c) a main handle bar; which is connected to an upper end of the front rotational axle;d) a rear rotational axle, which is rotationally connected to the device frame, to a rear of the front rotational axle, such that the rear rotational axle extends vertically upwards from the device frame; a front belt sprocket, which is perpendicularly connected to a lower end of the front rotational axle;', 'a rear belt sprocket, which is perpendicularly connected to a lower end of the rear rotational axle; and', 'a belt, which is connected in a front end around the front belt sprocket, and in a rear end around the rear belt sprocket, such that the belt is twisted 180 degrees between the front and rear belt sprockets;', 'such that a right or left rotation of the front rotational axle causes respectively a left or right rotation of the rear rotational axle; and, 'e) a rotation converter, which connects the front rotational axle with the rear rotational axle, such that a right or a left rotation of the front rotational axle is converted to ...
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