Patent ID: 7333277

Claim:
A cap device for sealing an opening of a container, comprising: a ring having a plurality of gear teeth provided along the inner circumference of said ring; a base; a transparent cover joined to said base with said ring rotatably sandwiched therebetween, thereby forming a closed space therewithin; a seat having a through slot and a plurality of elastic elements attached to the bottom of said seat; a positioning strip positioned inside said through slot and supported from the bottom by said elastic element; a plurality of prisms positioned above said seat, said prisms horizontally arranged side-by-side and oriented toward the same direction, each prism containing a first face, a second, and a third face, said first, second, and third faces having images, respectively, each prism having a triangular flange and a handle at a first end, at least one of said prisms having a passive gear at a second end, said triangular flanges being supported by said positioning strip, and said triangular flanges and said prisms oriented towards opposite directions; a gear member having two gears at the two ends of an axle, respectively, one of said gears engaging said passive gear of said prism, and the other gear being engaged by said gear teeth of said ring; a shaft having a plurality of holes receiving said handles of said prisms, respectively; wherein said seat, said positioning strip, said prisms, said gear member, and said shaft are housed inside said closed space; said prisms have one of their first, second, or third face aligned and faced upward; as said ring is turned in one direction, said first, second, and third faces of said prisms are aligned sequentially to face upward and, as the images on said faces jointly form a complete image, three complete images are therefore presented sequentially.