초록 ▼

In a fan including a hub mounted for rotation and a plurality of fan blades, an attachment assembly for detachably engaging at least one of the plurality of fan blades with the hub, the attachment assembly comprising a stop carried adjacent an end of a selected one of the plurality of fan blades, a

In a fan including a hub mounted for rotation and a plurality of fan blades, an attachment assembly for detachably engaging at least one of the plurality of fan blades with the hub, the attachment assembly comprising a stop carried adjacent an end of a selected one of the plurality of fan blades, a socket carried by the hub for receiving the end of the selected one of the plurality of fan blades, and an abutment mounted for movement between a first position to permit the end of the selected one of the plurality of fan blades to admit into the socket, and a normal second position against the stop.

대표청구항 ▼

[ What is claimed is:] [1.] An impeller, comprising:a hub mounted for rotation;a plurality of fan blades; anda plurality of attachment assemblies each for detachably engaging one of the plurality of fan blades with the hub, wherein each of the plurality of attachment assemblies comprises:a stop carr

[ What is claimed is:] [1.] An impeller, comprising:a hub mounted for rotation;a plurality of fan blades; anda plurality of attachment assemblies each for detachably engaging one of the plurality of fan blades with the hub, wherein each of the plurality of attachment assemblies comprises:a stop carried adjacent an end of one of the plurality of fan blades;a socket carried by the hub for receiving the end;an abutment mounted for movement between a first position to permit the end to admit into the socket and a second position against the stop; andmeans for biasing the abutment in the second position.