Patent ID: 7703176

Claim:
A hinge assembly for use with a first and a second member rotatable with respect to one another, the hinge assembly comprising: a housing engaged to the first member; a hinge bar positioned within the housing and engaged to the first member; a drum rotatably and slidably disposed on the hinge bar and engaged to the second member, the drum comprising a first end and a second end and slidable along the hinge bar between a first, locked position and a second, unlocked position; a locking wall disposed within the housing proximate to the first end of drum, the locking wall comprising at least one locking slot, wherein the at least one locking slot comprises a first locking slot wall; a locking member located on the first end of the drum, the locking member comprising a first locking member side extending parallel to the first locking slot wall, and a second locking member side extending parallel to the first locking member side, and wherein the locking member engages the at least one locking slot when the drum is in the first position, preventing the drum from rotating about the hinge bar; and a spring positioned wholly within the housing and engaged to the second end of the drum to bias the drum to the first, locked position.