Double-layered rotary cup
View Patent ↗A double-layered rotary cup includes an outer receptacle in which an inner container is received. The container has an open top along which a circumferential lip carrying a seal ring in an underside thereof is formed to be slidably positioned on a top rim of the receptacle. The bottom of the receptacle forms a hole through which a bolt extends to engage an internally-threaded projection formed on the bottom of the container thereby forming a relatively rotatable configuration between the receptacle and the container. A spring biased positioner is arranged between the bottoms of the container and the receptacle for setting the relative angular position therebetween. Films on which patterns are printed are attached to an outside surface of the container and an inside surface of the receptacle and the film of the receptacle forms windows for exposing the patterns of the film of the container.
1. A double-layered rotary cup comprising a lid, an inner container, a seal ring, at least one positioner, a retention disk, an outer receptacle, a coupling bolt, and sticker films respectively attached to an outer circumferential surface of the inner container and an inner circumferential surface of the outer receptacle, and characterized in that:
the inner container having the outer circumferential surface to which a first one of the sticker films is attached and also having a closed bottom having an undersurface in which an internally-threaded projection for threading engagement with the coupling bolt and a positioner seat corresponding to and receiving each positioner therein so that the positioner correspond to and is selectively engageable with positioning cavities defined in an inside surface of a bottom of the outer receptacle; and
the outer receptacle having the inner circumferential surface to which a second one of the sticker films is attached, the second one of the sticker films forms at least one window, the bottom of the outer receptacle forming a receiving hole that receives the retention disk that is centrally bored for extension of the coupling bolt to engage the internally-threaded projection of the inner container, the outer receptacle having a top opening having a rim that corresponds to a slot defined in an undersurface of a circumferential lip formed along an outer circumference of a top opening of the inner container and receiving the seal ring therein.
2. The double-layered rotary cup as claimed in claim 1 , wherein the sticker films are formed with patterns, colors, texts, marks, signs or combinations thereof.
3. The double-layered rotary cup as claimed in claim 1 , wherein the seal ring interposed between the circumferential lip of the inner container and the rim of the outer receptacle provides a sealing engagement therebetween and allows relative rotation between the inner container and the outer receptacle.
4. The double-layered rotary cup as claimed in claim 1 , wherein the positioner comprise a sleeve forming a bore and having a closed bottom, a resilient element being received in the bore, the bottom having an outward-projecting positioning bead engageable with the cavities defined in the outer receptacle.