Telescopic mast

A telescopic mast comprising:

• a first tubular section;
• a second tubular section having a locking member mounted thereto, wherein the first tubular section is slideably disposed within the second tubular section, and wherein the locking member is moveable in a radial direction relative to the second tubular section to bear against the first tubular section;
• and
• a third tubular section having a disengaging block mounted thereto, wherein the second tubular section is slideably disposed within the third tubular section, and wherein the disengaging block is shaped to guide the locking member radially outwards and disengage the locking member from the first tubular section when the mast is collapsed, wherein the third tubular section comprises:
• a second locking member which is moveable in a radial direction relative to the third tubular section to bear against the second tubular section;
• a flange portion extending from an outer surface thereof, wherein the flange portion is rotatable about a longitudinal axis of the third tubular section, wherein the flange portion is coupled to the second locking member by way of a mechanical linkage, the mechanical linkage being configured to convert rotation of the flange portion into radial motion of the second locking member, such that rotation of the flange portion about the longitudinal axis moves the second locking member in the radial direction relative to the third tubular section, wherein the mechanical linkage further comprises:
• a cam pathway formed in the flange portion;
• and
• a lever arm pivotably connected to the third tubular section and engaged with the second locking member, wherein
• the cam pathway engages the lever arm such that when the flange portion is rotated the lever arm pivots to move the second locking member in the radial direction.