Patent ID: 7393034

Claim:
A movable barrier system extendable between a first side wall and a second side wall, the system comprising: a barrier; a transverse bar comprising a first end and a second end, the transverse bar engaged with the barrier; a first support disposed on a first side wall and a second support disposed on a second side wall, wherein the first end of the transverse bar is moveably engaged with the first support and the second end of the transverse bar is moveably engaged with the second support; and a releasable locking mechanism engaged with the first end of the transverse bar, said locking mechanism including at least one roller adapted to move along the first support, said locking mechanism also including at least one stop member movable into a locking position in which the at least once stop member frictionally engages said at least one roller and said first support to releasably lock said transverse bar relative to the first support, said locking mechanism being capable of releasably locking said first support at substantially any point along said first support, the locking mechanism enabling said transverse bar to be moved relative to the first and second support without separation of said transverse bar from said first or second support.