Abstract: A guard assembly is used near a doorway with an overhead door on a platform having at least one post mounted adjacent the doorway. The assembly preferably comprises a barrier adapted to extend across the doorway and having at least one coupling which is adapted to connect to a respective post to allow the barrier to block the doorway; and a bracket adapted to facilitate connection and disconnection between the barrier and the overhead door. Such an assembly allows the barrier to block the doorway whether connected to or disconnected from the door and to move with the door as the door opens and closes.

Abstract: A barrier assembly for protecting an edge of a loading platform includes: a gate reciprocating between a barrier position approximate an edge of a loading platform and an open position away from the edge of the loading platform, and a toe barrier mounted approximate the edge of the loading platform and operatively coupled to the primary gate to reciprocate between a barrier position and an open position. The toe barrier provides a vertical barrier along a floor of the loading platform approximate the edge of the loading platform in its barrier position, and is operative to reciprocate to its barrier position when the primary gate is in its barrier position and to reciprocate to its open position when the primary gate is in its open position.

Abstract: The assembly includes a pair of parallel guide rails, each shaped generally as an inverted U; a first gate segment having at least one pair of rollers positioned on opposite lateral sides thereof, where each roller is received within a respective one of the guide rails so that the first gate segment is guided by the pair of guide rails; a second gate segment having at least one pair of rollers positioned on opposite lateral sides thereof, where each roller is received within a respective one of the guide rails so that the second gate segment is guided by the pair of guide rails; and at least one substantially rigid cross-bar pivotally connected between the first and second gate segments.

Abstract: A control mechanism for opening and closing a window sash or like element pivotally mounted in a frame. The mechanism has a drive member mounted for rotation with an elongated drive shaft and a housing mounted on the drive member for rotation relative to the drive member and the elongated shaft. The housing includes a retaining mechanism which is subtended by a first portion of the drive member. A rod for reciprocating movement in response to rotation of the drive member is located between the retaining mechanism and the first portion of the drive member and held in direct contact with the drive member by the retaining mechanism.