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(11) | EP 1 808 552 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Claw for crosspiece |
(57) CLAW FOR CROSSPIECE to be used in mobile working towers made of pre-fabricated elements
or modular system that are characterized by presenting in the claw interior a auto-positioning
guide bolt (1), automatic closing and opening systems (3) that only opens with simultaneous
pressure of the two buttons (5), a second security system (2) which is manual and
only closes when the claw is duly applied in the element. The claw is applied in the
crosspiece profile exterior extremity by the extension rabbet (4) being this joined
and forged to the profile. The claw interior area is adequate with the periphery contour
and equivalent to the element profile where it is applied and the guide bolt (1) has
exterior periphery equivalent to the interior step profile format of the element where
it is applied. The auto-positioning bolt (1) and the opening/close system (3) allow
the assembly/dissemble to an easy and rapid reconfiguration without neither tools
nor accessories.
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