FIELD: sportive equipment, in particular, hoops.
SUBSTANCE: exerciser has internal shell defining closed figure with hermetically sealed cavity, said shell being under pressure, external shell positioned over internal shell, and pressure regulating valve. Internal shell is made in the form of sleeve consisting of at least two layers of reinforced elastic material. External shell is made in the form of elastic sleeve or covering made from material ecologically safe for people. Ends of sleeves of external and internal shells are connected by means of bushing, into which bushing pressure regulating valve is pressed. Said valve may be provided with slide valve and plastic cap. Insurance cable and liquid hermetic are placed within hermetically sealed cavity. Exerciser may comprise at least one belt for altering shape of said figure, and two cushions from porous material. Closed figure may be shaped as ring having diameter of 700-900 mm, or may be made 8-shaped, or may be alternatively elliptical. Inner diameter of internal shell is 36-40 mm and outer diameter is 50-54 mm. Internal shell is expected to withstand loading not in the excess of 45-50 atm, and insurance cable is expected to withstand loading not in the excess of 95-100 kg/mm2. External shell is made so that bushing is closed once shell ends are joined. Bushing is manufactured by molding process from polyamide or polyethylene or rigid plastic.
EFFECT: increased efficiency, simplified construction and safe usage.
12 cl, 2 dwg
