Patent ID: 7901329

Claim:
A swinging gymnastic machine comprising: a base frame comprising a front leg and two rear legs; a front swinging assembly comprising a front rod fixedly fastened to a front end of the base frame, a front collar rotatably put on the front rod with an upper portion of the front rod being exposed, a front frame element extending from the front collar out of a front end of the base frame; wherein, a front ring fitted in an upper end of the front collar with the front rod passing through, a ring-shaped front damping member disposed on the front ring and being adapted to co-rotate with both the front ring and the front collar, a ring-shaped front washer fixedly put on a top end of the front rod and seated upon the front damping member, a circular front cap comprising a concave bottom and a spring unit disposed in the concave bottom thereof, and a front threaded fastener driven through the circular front cap into the front collar; a rear swinging assembly comprising a rear rod fixedly fastened to a rear end of the base frame, a rear collar rotatably put on the rear rod with an upper portion of the rear rod being exposed, a rear frame element extending from the rear collar toward the rear end of the base frame; wherein, a rear ring fitted in an upper end of the rear collar with the rear rod passing through, a ring-shaped rear damping member disposed on the rear ring and being adapted to co-rotate with both the rear ring and the rear collar, a ring-shaped rear washer fixedly put on a top end of the rear rod and seated upon the rear damping member, a circular rear cap comprising a concave bottom and a spring unit disposed in the concave bottom thereof, and a rear threaded fastener driven through the circular rear cap into the rear collar; a handle assembly comprising a handlebar pivotally secured to a front portion of the front frame element; and a pedal assembly slidably put on the rear frame element and comprising one pedal spaced from each side of the rear frame element respectively.