Patent ID: 7244107
Filing Date: 2007-07-17
Classification: F04B

Abstract:
1. An oxygen-compression apparatus comprising: a driving device having a driving shaft with a central axis; multiple rotating wheels eccentrically attached on and rotated with the driving shaft and located respectively at different angles relative to the central axis of the driving shaft; multiple driving rings rotatably mounted respectively around the rotating wheels; multiple rocking cylinders connected respectively to the driving rings, having different compression ratios and each having multiple connecting hoses respectively connected between the compression chambers of adjacent rocking cylinders, an input hose connected to the compression chamber of a first of the rocking cylinders and adapted to be connected to an oxygen source; an output hose connected to the compression chamber of a second of the rocking cylinders; and a base supporting the rocking cylinders, wherein the housings of the rocking cylinders have first and second distal ends, wherein said first of said distal ends of said housings are pivotally attached to the base.