US Patent 7363955 Venetian blind

A Venetian blind (1) with at least two vertically expanding ladder members (3). Each ladder member (3) comprises at least one vertical member (4), which by means of a plurality of vertically spaced ladder rungs (5, 11) is connected to at least one other vertical member (4). The Venetian blind further comprises a plurality of horizontally arranged cross slats (6) each being supported on each of the ladder members (3) by at least one of the ladder rungs (5) between the two vertical members (4). Each of the at least two ladder members (3) is carried in at least one of their ladder rungs (5, 11) by at least one carrier member.