Patent ID: 8578560

Claim:
A hinge mechanism having: a. a frame bracket including a primary flange and a secondary flange, the primary and secondary flanges extending from a frame bracket base, i. the primary flange having a primary flange aperture formed therein, ii. the secondary flange having a secondary flange aperture and a locking aperture formed therein; b. a barrel extending from a barrel first end to a barrel second end along a length, the barrel: i. being positioned between the primary and secondary flanges; ii. including a barrel locking groove formed at the barrel second end; and iii. a barrel channel; c. an actuation rod extending through the barrel channel from the primary flange aperture to the secondary flange aperture; and d. a lock plate having a locking flange sized to be receivable through the locking aperture and within the barrel locking groove, wherein the hinge mechanism is configured to be switchable between: i. a rotatable state in which the locking flange is not positioned in the barrel locking groove and the barrel is rotatable about a barrel long axis; and ii. a locked state in which the locking flange is positioned through the locking aperture and in the barrel locking groove and the barrel is not rotatable about the barrel long axis, wherein the locking flange is incapable of extending the entire length of the barrel in the locked state such that the locking flange does not extend all the way to the barrel first end in the locked state.