Patent ID: 7488013

Claim:
A foot bolt system for locking in place a plurality of adjacent sideways movable, sliding, planar elements, the foot bolt system comprising: a counter hole in a next planar element, which is movable to be beside a preceding planar element, and a foot bolt in the preceding planar element including a) a base pin fitting down in a hole in a base which is used for locking the preceding planar element relative to the base, b) a bracket in an edge of the preceding planar element which is connected to the base pin so that, a downwards movement of the bracket moves the base pin down into the hole in the base and locates the bracket in a down position in order to be received in the counter hole, the preceding and next planar elements are sideways interlocked when the bracket is in the down position and is received in the counter hole after movement of the base pin into the hole in the base, whereby the bracket is held against upwards movement from the down position by engagement with the counter hole, and on moving the next planar element away from beside the preceding planar element, the counter hole no longer restrains the bracket in the down position and hence against upwards movement, and likewise no longer restrains the base pin against upwards movement from down in the hole in the base, c) a locking/releasing pin, which in a first locking position, i) locks the base pin down in the hole in the base with the bracket thus located in the down position to be received in the counter hole of the next planar element, and ii) sticks out from the preceding planar element edge, and in a second releasing position, when the next planar element is brought close beside the preceding planar element so that the next planar element pushes the locking/releasing pin inwards from the preceding planar element edge, releases the base pin from being locked down in the hole even while the bracket in the down position and received in the counter hole prevents the base pin from moving upwards, and d) a member which, when the next planar element is removed and the locking/releasing pin is in the second releasing position, i) moves the base pin up from down in the hole in the base and ii) likewise moves the bracket upwards from the down position.