Ring jewelry

Abstract

A ring jewelry capable of changing an appearance thereof and enduring a long time use, and also being easily designed to have gorgeous appearance and easily assembled. The ring jewelry comprises a first ring element and a second ring element rotatably connected with the first ring element. The first ring element may comprise a base ring and the second ring element may comprise a rotary ring rotatable mounted on a cylindrical supporting wall of the base ring. The base ring may be divided into a first ring and a second ring fitted to each other. The rotary ring is rotatably held on the supporting wall in a groove formed between annular ridges on peripheral edges of the first and the second rings. A click stop mechanism for holding the rotary ring at a plurality of rotational positions relatively to the base ring may be provided.

What is claimed is:  
     
         1 . A ring jewelry comprising: 
 a base ring divided into a first ring and a second ring having substantially the same inner diameter, said first ring having a first annular ridge at one end thereof and a cylindrical supporting wall, and said second ring having a fitting portion at one end thereof and a second annular ridge at the other end thereof, the other end of said first ring and the fitting portion of said second ring are fitted together to form an annular groove between said first annular ridge and said second annular ridge; and    a rotary ring held rotatably on said cylindrical supporting portion in said annular groove of said base ring.    
     
     
         2 . A ring jewelry according to    claim 1   , wherein each of said first and second annular ridges has an outer circumferential surface on which ornament is provided.  
     
     
         3 . A ring jewelry according to    claim 1   , a plurality of rotary rings are held rotatably in said annular groove of said base ring.  
     
     
         4 . A ring jewelry according to    claim 1   , further comprising a click stop mechanism for holding said rotary ring at a plurality of angular positions relatively to said base ring.  
     
     
         5 . A ring jewelry according to    claim 4   , wherein said click stop mechanism comprises an elastic member provided between said base ring and said rotary ring by a concave/convex engagement.  
     
     
         6 . A ring jewelry according to    claim 4   , wherein said click stop mechanism comprises a ball provided between said base ring and said rotary ring and a spring for urging said ball in a radial direction of the ring jewelry and a hole formed on an outer surface of said base ring or an inner surface of said rotary ring for accommodate said ball and said spring.  
     
     
         7 . A ring jewelry according to    claim 1   , further comprising a ball bearing between said base ring and said rotary ring.  
     
     
         8 . A ring jewelry comprising: 
 a base ring having a first circumferential ornamental portion on one side thereof and a cylindrical supporting wall having an outer diameter smaller than that of the circumferential ornament portion; and    a rotary ring having a second circumferential ornamental portion and rotatably held on said cylindrical supporting wall of said base ring to be unmovably in an axial direction of the base ring.    
     
     
         9 . A ring jewelry according to    claim 8   , wherein cross sections of said base ring and said rotary ring on a plane along an axis of the ring jewelry are substantially symmetrical with respect to a plane perpendicular to said axis.  
     
     
         10 . A ring jewelry according to    claim 8   , wherein a length of said cylindrical supporting wall is substantially equal to a length of said rotary ring in the axial direction.  
     
     
         11 . A ring jewelry according to    claim 8   , wherein said base ring has a substantially annular protrusion on the cylindrical supporting wall and said rotary ring has an annular groove to be engaged with said annular projection.  
     
     
         12 . A ring jewelry according to    claim 11   , wherein said annular protrusion has a perpendicular face and a slant face continuously joining with a cylindrical surface of said supporting wall.  
     
     
         13 . A ring jewelry according to    claim 7   , further comprising a click stop mechanism for holding said rotary ring at a plurality of angular positions relatively to said base ring.  
     
     
         14 . A ring jewelry according to    claim 13   , wherein said click stop mechanism comprises an elastic member provided between said base ring and said rotary ring by a concave/convex engagement.  
     
     
         15 . A ring jewelry according to    claim 13   , wherein said click stop mechanism comprises a ball provided between said base ring and said rotary ring and a spring for urging said ball in a radial direction of the ring jewelry and a hole formed on an outer surface of said base ring or an inner surface of said rotary ring for accommodate said ball and said spring.  
     
     
         16 . A ring jewelry according to    claim 8   , further comprising a ball bearing between said base ring and said rotary ring.  
     
     
         17 . A ring jewelry comprising: 
 a first rotary ring member having a first circumferential ornament surface and an first abutting surface inclined with respect to an axial direction of the ring jewelry; and    a second rotary ring member having a second circumferential ornament surface and an second abutting surface abutting with said first abutting surface, and rotatably fitted to said first rotary ring member to be unmovable in an axial direction of the ring jewelry.    
     
     
         18 . A ring jewelry according to    claim 17   , wherein said first circumferential ornament surface and said second circumferential ornament surface has substantially the same area.  
     
     
         19 . A ring jewelry according to    claim 17   , wherein said first rotary ring member has an annular groove and said second rotary ring member has an annular projection projecting in the axial direction of the ring jewelry and fitted into the annular groove of said first rotary ring member.  
     
     
         20 . A ring jewelry according to    claim 17   , wherein said annular projection has a substantially annular protrusion at an end thereof to be engaged with an annular groove formed in said first rotary ring member.  
     
     
         21 . A ring jewelry according to    claim 17   , further comprising a click stop mechanism for holding said first rotary ring member at a plurality of angular positions relatively to said second rotary ring member.  
     
     
         22 . A ring jewelry according to    claim 17   , wherein said second rotary ring member has an additional abutting surface inclined with respect to the axial direction of the ring jewelry, and said ring jewelry further comprises a third rotary ring member having a third circumferential ornament surface and an third abutting surface abutting with said additional abutting surface of said second rotary ring member, and rotatably fitted to said second rotary ring member to be unmovable in an axial direction of the ring jewelry.  
     
     
         23 . A ring jewelry according to    claim 22   , further comprising click stop mechanisms for holding said first rotary ring member at a plurality of angular positions relatively to said second rotary ring member and for holding said third rotary ring member at a plurality of angular positions relatively to said second rotary ring member.