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US Patent 7491156 Fixed weight dumbbell and barbell system

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Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7491156
Date of Patent
February 17, 2009
Patent Application Number
11906246
Date Filed
October 1, 2007
Patent Citations Received
‌
US Patent 12076604 Connector assembly
0
‌
US Patent 12115407 Dumbbell having a threaded connection for adding weight plates
0
Patent Primary Examiner
‌
Jerome Donnelly
Patent abstract

A handle has enlargements between a central gripping section and cylindrically shaped opposed end sections. The opposed end sections have free ends formed with male screw threads for the minority of their axial extents. A pair of weights are similarly configured. Each weight includes an inner center, coated outer layer, and a central cylindrical bore, and bushings in the bore. A locking nut is coupled to each free end of the handle. The diameter of the free ends of the handle is less than the diameter of the bushings for the rotatable coupling there between. An end cap is secured with respect to each weight. Screws extend through each end cap and outer layer. The screws extend into the inner center to join the end caps with respect to the weights.

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