Patent ID: 6546677
Filing Date: 2003-04-15
Classification: H01Q

Abstract:
An extendible mast assembly comprising:a base member; a base mast section pivotally coupled to the base member and pivoting along a path between a down position and an up position; a drive motor assembly mounted to the base ember and coupled to alternatively push and pull said base mast section to pivotally drive the base mast section between said up and down positions; an extendible mast section telescopically received within an axial bore of the base mast section and moving therewith between the up and down positions, the extendible mast section telescoping relative to the base mast section between a retracted position and an extended position and having an axial bore coaxial with the base mast section; and wherein a space is defined between the extendible mast section and the base mast section and the assembly further comprises a cover for enclosing an upper end of the space, whereby isolating the coaxial bores of the extendible mast section and the base mast section from ambient elements.