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(11) | EP 1 195 479 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Construction stanchion with safety system |
(57) The stanchion comprises two tubes (1) and (2) telescopically coupled to each other
in which the outer tube (1) is comprised of two segments (3) and (3') welded to each
other and opposite said welding being provided a protrusion (15) under which is defined
a lower edge (14) which is placed inside the segment (3), thereby defining a stop
for a pin (11) which is housed transversely in two opposing orifices (10) of the inner
tube (2), so that it limits the upwards displacement of said tube (2) inside the outer
tube (1), while a deformation (12) made on the inner tube (2) after its bottom end
is inserted in the outer tube (1) provides a stop which prevents said bottom end of
the inner tube (2) from exiting through the orifice (7) of the baseplate (6) of the
outer tube (1). The stops determined by the pin (11) and the deformation (12) against
the edge (12) of the outer tube (1) and against its baseplate (6) provide a safety
system which allows the longitudinal displacement of the inner tube (2) with respect
to the outer tube (1), preventing their separation. |