| 摘要 |
An insert construction for receiving an audio cassette single which is generally contained in a cardboard sleeve and sealed in a clear heat-shrink wrapped plastic cover and which is smaller than the usual plastic case which houses the multiple play audio cassette, enabling the cassette singles to be safely stored and displayed in the security packages heretofore used for the larger plastic cases. At least one generally U-shaped cross-sectional channel is formed in the insert and has a width generally equal to the thickness of an the wrapped audio cassette single for trapping and retaining the cassette within the insert. When the audio cassette single is received in the insert, the dimensions of the insert or the combined insert and cassette enable the insert and cassette to be placed in the storage compartment of an audio cassette security package when the package is in the unlocked position, and prevent removal of the insert and cassette from the storage compartment when the security package is in the locked position. Certain embodiments of the insert can be injection molded in strip form and then bent into a final U-shape for receiving the wrapped cassette single. Certain embodiments contain ribs within the channels for positioning the cassette therein and enables the insert to achieve the required internal and external dimensions with a minimum volume of plastic.
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