| CPC F16M 11/14 (2013.01) [F16C 11/06 (2013.01); F16M 2200/021 (2013.01)] | 9 Claims |

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1. A ball and socket joint comprising:
a socket comprising an opening;
a ball configured to be located in the socket;
an attachment surface for attaching a device to the ball and socket joint;
a pin located on either the socket or the ball, and
a groove located on the other of the socket or ball,
wherein the groove is located in a plane defined by a first axis and a second axis, the second axis perpendicular to the first axis,
wherein the first axis extends through the attachment surface when the ball is located in the socket;
wherein the pin is configured to engage the groove and can translate along the length of the groove when the ball is located in the socket;
wherein the pin and groove are arranged to prevent rotation of the ball about the first axis; and
wherein, when the ball is located in the socket, the pin and groove are arranged to allow rotation about the second axis, and to allow rotation about a third axis perpendicular to the first axis and perpendicular to the second axis,
wherein the ball and socket joint further comprises a tamper circuit, wherein the surfaces of the pin(s) and groove are conductive, and wherein the conductive surface of the pin(s) and groove provide a connection for the tamper circuit when the ball is located within the socket.
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