US Patent 11951347 Weight member and the use in barbell and dumbbell devices

A weight member and the use in barbell and dumbbell devices are provided, wherein the weight member has a first side and a second side opposite to each other, and a split groove through the first side and the second side. A first mortise and a first tenon are arranged on the first side, and a second mortise and a second tenon are arranged on the second side. The first mortise and the second tenon are arranged in opposite direction correspondingly, and the first mortise and the second tenon are opposite to each other and arranged correspondingly. When the weight members are assembled together, the first mortise and the first tenon of one weight member is sliding interlocked with the second tenon and the second mortise of another weight member respectively.