Abstract: A retractable overhead guard assembly is provided to protect an operator of industrial trucks, such as a forklift operator, from falling objects. Said guard is retractable from a raised to a lowered position for operation in areas of low overhead clearance. A pair of substantially parallel extensible supports are attached to said truck. A guard is mounted on the upper ends of the supports and is manually slideable between a forward and rearward position and is maintained in either position by a locking mechanism. Said supports may include biasing means such as springs to counterbalance the weight of the guard and facilitate manual adjustment between raised and lowered positions. A locking mechanism is also provided on each support to retain the guard in a plurality of positions. Electrical interlocks prevent the raising of the lift beyond a predetermined height if the guard is not in the rearward and raised position where it offers maximum protection to the operator.

Abstract: A movable wall assembly is provided to selectively partition an interior space. The assembly includes a base member having support elements therealong, and a leveling support bar on which the partition is assembled overlying the support elements and adjustable with the support elements to effect leveling thereof. Wall panels are supportably mounted on the support bar, being maintained in place by slotted support post members between the wall panels which engage the panels. The post members are secured to the support elements on the support bar, and to tie pieces extending between adjacent panels along upper edges of the panels. A method of leveling the movable wall assembly is also provided whereby the assembly can be leveled prior to mounting and securing the wall panels on the leveling support bar.