Abstract: A mobile device case having a case body having a cavity configured to receive a mobile device, a plurality of sound channels nested within the case body and a cavity wall associated with the case body, wherein the cavity wall is configured to form a sound chamber within the cavity, wherein the sound chamber is in sound communication with a speaker of the mobile device and the plurality of sound channels, thus allowing sound emitted from the speaker of the mobile device to be guided to the plurality of sound channels. An advantage of the mobile device case is that the plurality of sound channels nested within the case may redirect sound from speakers on the device to allow sound to escape out of the front and back of the mobile device case, thus redirecting sound to a device user and preventing the mobile device case from muffling the sound.

Abstract: A low-profile, hand-holdable, self-contained x-ray fluorescence (XRF) analyzer includes an articulated head. Orientation of the head, relative to a body of the analyzer, may be user adjusted, manually and/or via remote control. A primary x-ray source and an x-ray detector are disposed within the head for articulation therewith. The analyzer may be inserted into a small diameter pipe or other hollow structure, and then the orientation of the head may be adjusted, so a business end of the head is oriented toward a portion of the interior of the pipe or other structure that is to be analyzed. Alternatively, a primary x-ray source and an x-ray detector are disposed within a fixed-orientation head, such that the business end axis of the analyzer is oriented approximately perpendicular to the main axis of the body.