Support column

Details Support column Support column

E - Fixed Constructions

04

C

E04C 3/32 (2006.01) E04G 25/06 (2006.01)

Patent

CA 2228666

A method of preventing separation of a vertically adjustable support column having sections connected together by mating threads and a support column. External threads of a second section are mated with internal threads of a first section until a first end of the second section protrudes into an enlarged diameter portion of an interior bore of the first section immediately adjacent to the internal threads. A top few of the external threads at the first end of the second section are mechanically damaged. The mechanically damaged threads prevent the first end of the second section from being removed from the enlarged diameter portion of the first section but permit relative telescopic adjustment of the first section and the second telescopic section within a limit provided by the enlarged diameter section.

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