Abstract: A housing has a bud portion abutting an elongated stem portion. The bud portion is to fit within an ear. The bud portion has a primary sound outlet at its far end that is to be inserted into an outer ear canal, and abuts the stem portion at its near end. A speaker driver is inside the bud portion. Electronic circuitry inside the housing includes a wireless communications interface to receive audio content over-the-air and in response provides an audio signal to the speaker driver. A rechargeable battery as a power source for the electronic circuitry is located inside a cavity of the stem portion. Other embodiments are also described and claimed.

Abstract: A lightweight rack structure is provided for use in a space station. The rack includes a deployable/folding rigid front frame including two side rails and upper and lower cross members connected to the two side rails. A flexible shell is connected to the front frame. The shell includes an upper wall portion, a lower wall portion, a pair of side wall portions and a rear wall portion. Support members are provided to support the flexible shell in a deployed position.