Abstract: A bracket assembly includes a cylindrical member configured to hold a supporting bar at a first opening of the cylindrical member, a cylindrical core housed in the cylindrical member from the second opening of the cylindrical member, an annular cap coupled with the cylindrical core at the second opening of the cylindrical member, and a torque cartridge housed within a torque cartridge housing and transversely press fitted into the cylindrical member and the cylindrical core. The torque cartridge has a first portion with a first end that is coupled to the cylindrical core and a second portion with a first end that is rotatably coupled at a second end of the first portion to provide an infinite smooth pivoting movement between the first and second portions of the torque cartridge.