Telescopic tubes locking device

A telescopic tubes locking device comprising:

• an inner tube, an outer tube, said inner tube and said outer tube having coinciding longitudinal center axes, said outer tube terminating in an open end, said inner tube being slidably mounted within said outer tube;
• a housing, said housing located about said outer tube, said housing being slidably movable between an extended position and a retracted position on said outer tube in a direction along said longitudinal center axes, said housing having an internal annular chamber located about said outer tube;
• an end fitting fixedly mounted on said outer tube at said open end, said end fitting having a first conical surface, said first conical surface being spaced from said open end of said outer tube;
• biasing means located within said internal annular chamber, said biasing means applying a biasing force between said end fitting and said housing in a direction parallel to said longitudinal center axes, said biasing means tending to locate said housing in said retracted position;
• and
• an elastomerics and immovably collet fixedly mounted on said housing, said collet being located within said internal annular chamber, said collet being in binding engagement with said inner tube and said end fitting once said housing is in said retracted position preventing sliding movement between said inner tube and said outer tube, upon manual movement of said housing to said extended position said collet is located spaced from said end fitting not being in binding position with said inner tube permitting longitudinal sliding movement of said inner tube relative to said outer tube.