|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||095/096; 128/204.16; 128/204.21; 128/205.24|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 34 인용 특허 : 139|
A portable gas fractionalization apparatus that provides oxygen rich air to patients is provided. The apparatus is compact, lightweight, and low-noise. The components are assembled in a housing that is divided into two compartments. One compartment is maintained at a lower temperature than the other compartment. The lower temperature compartment is configured for mounting components that can be damaged by heat. The higher temperature compartment is configured for mounting heat generating components. An air stream is directed to flow from an ambient air i...
What is claimed is: 1. A method of extending the life of a battery used for supplying power to an oxygen concentrator, comprising: incorporating a PWM current control system in said oxygen concentrator, wherein the PWM current control system is operatively interconnected to a current source; providing a PWM signal to the current source; and converting the PWM signal to a valve actuation current to control at least one current actuated flow control valve. 2. The method of claim 1, wherein the valve actuation current comprises a first current amplitude...