Abstract: A pad assembly is described that retains a blade assembly or set to the body of a hair cutter. The pad assembly reduces random forces generated by the blade assembly and ensures an accurate and repeatable tension is maintained between the inner and outer blades of the blade assembly. The pad assembly acts as an intermediary between the blade assembly and the body of the hair clippers to reduce challenges associated with fasteners directly attaching the blade assembly to the body of the clipper.

Abstract: A transport conduit for bulk material is formed of a rigid outer tube and an elastic inner tube of substantially smaller diameter. The inner tube is hermetically sealed at each of its ends to the conduit section so as to form a closed annular chamber between the inner elastic tube and the rigid outer tube. Communicating through the wall of both the outer and inner elastic tubes are relief and check valves sealed with respect to the elastic inner tube so as to maintain the integrity of the annular chambers. The valves are connected to a secondary gas supply from which air under pressure is directed into the conduit to assist in the transport of the bulk material. The annular chambers are serially connected by bridging tubes passing from one section to the adjacent section, thereby interconnecting each of the annular chambers in an outer parallel conduit to permit atmospheric air to move serially through them from one end of the transport conveyor to the other.