Abstract: An air pulse generator provides a high frequency chest wall oscillation therapy to a patient wearing an inflatable garment. The air pulse generator includes a blower and a valve coupled to the blower and coupled to the inflatable garment. The valve is movable to apply an oscillating pressure to the inflatable garment. The valve may be a rotary valve or a solenoid valve.

Abstract: An air pulse generator provides a high frequency chest wall oscillation therapy to a patient wearing an inflatable garment. The air pulse generator includes a blower and a valve coupled to the blower and coupled to the inflatable garment. The valve is movable to apply an oscillating pressure to the inflatable garment. The valve may be a rotary valve or a solenoid valve.

Abstract: A HFCWO system includes an air pulse generator having a blower inlet in communication with a blower and an air port in communication with an inflatable garment. The air pulse generator includes a housing and an air pulse assembly coupled to the housing. The air pulse assembly has at least one diaphragm, at least one driver operable to move the at least one diaphragm and at least one spring arranged to bias the at least one diaphragm away from a portion of the housing.

Abstract: A HFCWO system comprises an air pulse generator having a blower inlet in communication with a blower and an air port in communication with an inflatable garment. The air pulse generator comprises a housing and an air pulse assembly coupled to the housing. The air pulse assembly has at least one diaphragm, at least one driver operable to move the at least one diaphragm and at least one spring arranged to bias the at least one diaphragm away from a portion of the housing.

Abstract: Plural electrical loads supplied with power from a single source are monitored to detect defective loads. Each load is periodically individually energized and current delivered by the source is measured. Measured current for each load is compared with limit values to detect abnormal values. To overcome consequences of supply voltage fluctuations, supply voltage is also measured and admittance of each load is determined from measured current and measured voltage. The admittance value thus determined for each load is compared with limit values to detect abnormal values. Load monitoring of loads energized according to a control algorithm proceeds by periodic momentary suspension of energization according to the control algorithm and energization of selected individual loads.

Abstract: A method and apparatus are provided for producing a control signal by digital computation for controlling an element affecting a process. The process is described by a sequence of activities, and the onset of each activity is marked by a predetermined change of a process parameter. An event detector is provided for detecting the occurrence of predetermined changes of process parameters in response to data included within event detector data blocks. The event detector data blocks include data defining the desired response to the detection of a predetermined change of a process parameter. The control signal is produced in accordance with a selected predetermined algorithm using data included in algorithm data blocks. A first event detector data block and a first algorithm data block are selected defining a first predetermined change of a process parameter and a first algorithm.