A method for evaluating the thermal exposure of a selected metal component which has been exposed to changing temperature conditions is described. On the counter-water-drenchable side, a seal plate including, in the lip leading end portion thereof, an air hole for controlling the internal and external pressures of the bearing is disposed. In addition, softgoods for an infant support structure is disclosed. A filter provided with penetration openings is disposed in the flow of the synthetic plastic material that is disposed between these two sections, which filter is disposed within the housing between the two sections of the screw so that it subdivides the interior of the housing. The accessory can be selectively connected to the blower via the connector assembly so that the air under pressure from the blower cooperates with the lower blade portion and the upper funnel portion to perform a combined pneumatic shovelingsweeping operation.