Abstract: A fan and a fan blade are provided for allowing airflow through the fan blade in a fan failure condition. The fan blade includes a peripheral member defining an opening. A flexible cover member is attached to the peripheral member for covering the fan blade opening during normal operation of the fan. The flexible cover member is hingeably attached to the peripheral member for movement away from the peripheral member enabling airflow through the fan blade opening in a fan failure condition.

Abstract: A puller tool used with a pry bar, the pry bar includes a long portion to provide leverage in a curved area, the curved area for abutment with a surface to form a pivot and fulcrum, and a tip is provided on the other and shorter side of the pry bar curve for pushing against the puller tool. The puller tool is an elongate structure including a hook in a first area; a grippable surface in a second area, and a selectively positionable pry bar abutment member or pry base mounted to an intermediate area. The pry base can be manually repositioned relative to the hook. To use the combination to remove a seal about a shaft, the hook of the puller is slipped in-between the shaft and seal to engage the seal back side. The pry bar is located and the pry base is positioned against the pry bar tip with the curved pivot of the bar against a stationary surface.