US Patent 10060573 Expandable sockets for use with portable media players

An expandable socket for attachment to a portable media player or a portable media player case. The expandable socket generally includes a base, a button, and a spring. The base is adapted to engage a portion of the portable media player or the portable media player case. The button is spaced from and movable relative to the base. The spring is disposed between the base and the button, the spring arranged to resist movement of the button toward the base.