Patent ID: 7631781

Claim:
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.