(57) A window assembly comprising a first profile element (101 ), a second profile element
(102) and a fastening device (20), said two profile elements being fastened together
by said fastening device (20), each of said two profile elements comprising at least
one groove (103,104) and said fastening device (20) fastening the two profile elements
together by engaging the at least one groove in the first profile element and the
at least one groove in the second profile element. Said fastening device comprising
the following elements: an elongated element (23) where a portion (27) of said elongated
member located between the centre of the elongated member and said second end is formed
with an external thread, a first engaging element (21) engaged with the grooves (103)
in the first and second profile elements (101,102), a second engaging element (22)
engaged with the grooves (104) in the first and second profile elements (101,102),
a first fixing member (36/37), a second fixing member (42/43), and a spring element
(24). Where the fastening device (20) is arranged such that: said second engaging
element (22) is arranged on said threaded portion (27), said first and/or said second
fixing member (36/37,42/43) being arranged displaceably along the longitudinal axis
of the elongated element and said spring element (24) being arranged to bias one of
said first or second fixing members (36/37,42/43) towards or away from the other corresponding
fixing member (42/43, 36/37), and said first engaging element (21 ) being arranged
on said elongated element (23) between said first end (25) and said second engaging
element (22).
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