Weight Plate

Abstract

A weight plate for physical fitness is disclosed including a plate body formed with a central through-bore for mounting on a bar to form a barbell set. The body is further formed with upper and lower half-donut shape shells and an annular core which fits tightly into both shells. The weight plate is not integrally cast therefore has high manufacturability and minimized manufacturing costs. Shells and core are integrated by sealing connection into a whole piece of plate having a smooth surface and an aesthetic appearance. The manufacture process is energy economizing and hardly causes pollution to the environment.

1 . A weight plate for physical fitness including: a plate body formed with a central through-bore and having a plate periphery. The said body is further formed with upper and lower trough shells and an annular core, which fits tightly into both trough shells. The corresponding edges of said trough shells are sealing connected with each other and enclose the core to form a whole piece of annular plate. 
   
   
       2 . A weight plate according to  claim 1  wherein: said upper and lower shells are formed of metallic sheet into shape. 
   
   
       3 . A weight plate according to  claim 2  wherein: said metallic sheet is 0.05 mm to 10 mm thick. 
   
   
       4 . A weight plate according to  claim 2  or  claim 3  wherein: the said shells are formed of pressed Steel Sheets into shape. 
   
   
       5 . A weight plate according to  claim 2  or  claim 3  wherein: the said shells are formed of pressed aluminum alloy Sheets into shape. 
   
   
       6 . A weight plate according to  claim 1  wherein: said core is formed of ore powder and adhesives by compressing into shape. 
   
   
       7 . A weight plate for physical fitness according to  claim 4  wherein: said ore powder is mesh  2  to mesh  800  iron ore powder. 
   
   
       8 . A weight plate for physical fitness according to  claim 4  wherein: said ore powder is mesh  2  to mesh  800  metal ore powder. 
   
   
       9 . A weight plate for physical fitness according to  claim 4  wherein: said ore powder is mesh  2  to mesh  800  scrap iron powder. 
   
   
       10 . A weight plate for physical fitness according to  claim 4  wherein: said ore powder is mesh  2  to mesh  800  high-concentrated ore powder. 
   
   
       11 . A weight plate according to  claim 1  to  claim 9 , said corresponding edges of upper and lower shells are sealing connected by welding. 
   
   
       12 . A weight plate according to  claim 1  to  claim 9 , said corresponding edges of upper and lower shells are sealing connected by hot-press-coupling. 
   
   
       13 . A weight plate according to  claim 1  to  claim 9 , said corresponding edges of upper and lower shells are sealing connected by glue-press-coupling.