Boom assembly and components thereof

A boom assembly comprising:

• an upright stand mountable on a floor and having a vertical post in the form of a hollow tube;
• an elongated boom composed of hollow tubing;
• means for coupling an intermediate portion of said boom to the upper end of said post, while enabling adjustment of orientation of said boom in both vertical and horizontal directions;
• a linear extension member for said boom and in the form of a hollow tube;
• means for coupling said extension member to an end of said boom;
• said stand including a plurality of legs each in the form of a hollow tube;
• a plurality of foot elements;
• means for coupling each of said foot elements individually to respective different ones of said legs;
• and at least one of said coupling means including means for securement within an open end portion of the coupled hollow tube that further comprises:
• a hollow body having an exterior surface of a size and shape to accept said open end portion in ensleevement thereof and in the wall of which body are defined a pair of laterally-opposite slots continuing longitudinally inward from one end of said body;
• a lateral spreader of a size and shape to seat within said one end of said body and being composed of a pair of laterally facing elements positioned about said one end portion of said lever;
• a lever having one end portion inserted within said spreader to effect spreading thereof upon lateral deflection of the other end of said lever;
• and adjustable means carried by said body inwardly of said open end portion for laterally deflecting said other end of said lever.