Patent ID: 8540198

Claim:
A support arm system, including: a socket for attachment to a surface and a support arm, for removable insertion in the socket, the support arm having at least one formation, the socket including: a housing having an insertion opening leading to a passage for insertion of the support arm; at least one formation two shoulder formations projecting into said passage, each extending from one side of the passage to the other, complementary to said at least one formation on the support arm to engage the support arm when the support arm is in the socket; and a gate element in the passage biased to a position at or in front of said shoulder formations at least one formation in said passage; wherein, to insert the support arm, the gate element must be pushed against its bias to slidingly travel along said passage to expose said formation shoulder formations in said passage, whereby rotation of the support arm engages said at least one formation on the support arm with said shoulder formations in the passage for engagement by the support arm to retain the support arm in the socket, the gate element providing a positive force between the support arm and socket while it is so retained.