Case combination for microcassette

Claim 1

In combination with a plurality of microcassettes, a case combination containing said microcassettes, said case combination comprising a first inside case containing said microcassettes which is constructed and sized for closely enclosing two of said microcassettes contained therein, a second outside case for microcassettes, said second outside case containing two of said inside cases and being constructed and sized for closely enclosing two of said first inside cases for microcassettes contained therein, said second outside case having the same outline dimensions as a case for standard compact cassettes, wherein the first inside case for microcassettes consists of a main body part and a cover, the main body part being provided with a bottom wall, a rear wall, two side walls and a front wall coupled solidly with said bottom wall, one edge of said rear wall being pivoted on said bottom wall, the cover being pivoted on the other edge of said rear wall, and stopper means constructed and positioned to fit hub holes of two microcassettes in said case and arranged only on said bottom wall, wherein a thickness of said microcassettes in a direction of said stopper means is such that a space remains between said inside case cover and said microcassettes, and wherein said case combination includes a chattering prevention member in said inside case and pressed between said microcassettes and said inside case cover, said chattering prevention member being sized so as to fill said space between said microcassettes and said inside case cover whereby movement of said cassettes is prevented.