Abstract: An axial flux motor incorporates a rotor having a plurality of pockets receiving magnet assemblies. A retention device is engaged from an inactive surface of at least one magnet assembly to one or more structural elements surrounding an associate one of the plurality of pockets in the rotor.

Abstract: A system 10 is provided for automatically evacuating a water trap 50 of a ventilator 20. The ventilator 20 delivers air through a humidifying water heater 30 and along an air supply line 40 to a patient requiring breathing assistance. A dip 44 in the air supply line 40 is configured with a water trap 50 for collecting condensate within the air supply line 40. A suction line 60 is located within the water trap 50 at a tip 62 and has an end 68 outside of the water trap 50 which is coupled to a canister 70. The canister 70 is also coupled to a vacuum source 100 through a valve 80. When the valve 80 is in a first open position, the vacuum source 100 provides suction along the suction line 60 so that liquids collecting within the water trap 50 are evacuated out of the water trap 50 and delivered into the canister 70. A controller 90 controls the frequency with which the valve 80 is opened and a duration for which the valve 80 remains in the opened position.

Abstract: Transducer device (12) for drums including a head structure (18) mountable to a drum by means of a mounting structure (20). The head structure includes a piezo electric transducer (24) clamped between metal plates (26, 28), plate (26) forces against the drum skin (16) by application of force through the mounting structure (20). The force is applied to a plate (34) forming part of the head structure (18) which is acoustically isolated from the transducer (24) by an isolating element (36) positioned between the plates (34) and (28). Electrical output is taken via a cable (36) to a preamplifier (74).