1
Douglas F DeVries, Malcolm R Williams: Method and apparatus for attenuating compressor noise. Cardinal Health 203, Baker Hostetler, May 5, 2009: US07527053 (22 worldwide citation)

The invention comprises a method and apparatus for reducing the noise generated by compressors, including Roots-type blowers. The invention has particular use for reducing noise generated by compressors used in mechanical ventilators, though the advantages thereof may be realized in many different a ...


2
Devries Douglas F, Williams Malcolm R: Method and apparatus for attenuating compressor noise. Pulmonetic Systems, Devries Douglas F, Williams Malcolm R, STETINA BRUNDA GARRED 75 Enterprise Suite 250 Aliso Viejo California 92656, February 16, 2006: WO/2006/017398 (1 worldwide citation)

The invention comprises a method and apparatus for reducing the noise generated by compressors, including Roots-type blowers. The invention has particular use for reducing noise generated by compressors used in mechanical ventilators, though the advantages thereof may be realized in many different a ...


3
Devries Douglas F, Williams Malcolm R: Method and apparatus for attenuating compressor noise. Pulmonetic Systems, April 18, 2007: EP1773455-A2

The invention comprises a method and apparatus for reducing the noise generated by compressors, including Roots-type blowers. The invention has particular use for reducing noise generated by compressors used in mechanical ventilators, though the advantages thereof may be realized in many different a ...


4
Douglas F DeVries, Malcolm R Williams: Method and apparatus for attenuating compressor noise. Pulmonetic Systems, The Hecker Law Group, August 4, 2005: US20050166921-A1

The invention comprises a method and apparatus for reducing the noise generated by compressors, including Roots-type blowers. The invention has particular use for reducing noise generated by compressors used in mechanical ventilators, though the advantages thereof may be realized in many different a ...


5
DEVRIES DOUGLAS F, WILLIAMS MALCOLM R: PROCEDE ET APPAREIL DASSOURDISSEMENT DES COMPRESSEURS, METHOD AND APPARATUS FOR ATTENUATING COMPRESSOR NOISE. PULMONETIC SYSTEMS, CAREFUSION 203, GOWLING LAFLEUR HENDERSON, May 6, 2014: CA2574018

The invention comprises a method and apparatus for reducing the noise generated by compressors, including Roots-type blowers used in mechanical ventilators. A noise-attenuating gas flow path for a compressor is contained in a portable ventilator housing. The gas flow path comprises chambers intercon ...