Abstract: A collapsible magnetic tape cassette includes a housing having collapsible front, rear, and side panels that permit the housing to be presented in a collapsed, essentially flat form for storage, packaging, and mailing purposes and that also permit the user to later expand the housing to a normal erected form for playback purposes. A loop of magnetic tape is stored and guided within the cassette housing in a horizontal or flat position and is then guided to the vertical position as it exits the cassette housing during playback.

Abstract: A quick release locking assembly including an integral lock and protected opposite end formed in combination with a quick release apparatus for securing a wheel to a bicycle frame in a theftproof manner. The hand-operated lever of the quick release is prevented from rotating by a locking pin which engages a bore in the quick release assembly to prevent rotation thereof, while the adjustable nuts on the opposite threaded end are prevented from being removed by the end cap housing which encases and protects the nuts in a manner such that neither the end cap housing or the nuts can be removed when the assembly is mounted on a bicycle. When secured, the quick release lever cannot be rotated, nor can the nuts securing the opposite end be accessed, offering complete security to the object secured.