Abstract: A counterbalance mechanism counterbalances an eccentric mass on a rotating shaft supported by a frame. A first pulley is coupled to and concentric with the shaft. An arm is coupled to the shaft to rotatably support a second at a first distance from the first pulley. A third pulley is fixedly coupled to the frame at a second distance from the first pulley. A fourth pulley is rotatably coupled to and concentric with the third pulley. A spring is fixed at a first end to the frame and has a second end that is coupled to the fourth pulley such that the spring provides a restoring force as the fourth pulley is rotated. A first cable has a first end that is coupled to the fourth pulley and a second end that is coupled to the frame through the third pulley after passing over the first and second pulleys.
Abstract: An apparatus (12) for supporting a flag comprising a housing (26) having an opening (24) in a side face. A passage (30) extends trough housing (26). The housing (28) has a lower tubular part (40) that is mounted to the top of a flagpole (10). A cable (16) is attached to an arm (14). The cable extends from a winch (22) up through the flagpole and through the passage (30) in the housing (26). The cable is attached to the arm (14). In order to attach a flag to arm (14), winch (22) is operated to extend cable (16) and to lower arm (14) to the ground. Once a flag is attached to arm (14), the winch (22) is operated to retract the cable (16). This draws the arm (14) into the housing (26). Continued retraction of the cable (16) results in the arm (14) adopting an essentially horizontal position. The apparatus may rotate.
Type:
Grant
Filed:
May 7, 2002
Date of Patent:
July 6, 2004
Inventors:
Arthur Lachlan McCudden, Lachlan Arthur Dean McCudden