Litton Systems, Inc.

Dale L Selhost

Gary Neal Byrd

Kelly M Coffield

Kevin G McCulloh

Sammy K Mickelson

Dean A Cantrill

John W Henneman

Bradley D Kreiner

Oxygen concentrator used in home health care

An apparatus for providing oxygen-enriched air at a first pressure and at a second pressure, the second pressure being greater than the first pressure. The apparatus comprises, in combination, a pressure swing adsorption system and a pressure intensifier. The pressure swing adsorption system for enriching the oxygen content of air has a pressure of at least the first pressure. The pressure swing adsorption system is adapted to provide oxygen-enriched air to a first outlet at the first pressure and to provide oxygen-enriched air to a pressure intensifier at the first pressure. The pressure intensifier pressurizes the oxygen-enriched air and provides the oxygen-enriched air to a second outlet at the second pressure.

Oxygen concentrator

A cover for a fill port of a flow controller of a high pressure fitting for filling a cylinder with a pressurized gas. The cover has a slidable cover plate having elongated flexible members attached thereto, such member having a locking projection that cooperatively fits into a locking recess on the cover plate. The cover plate is movable from a first position covering the fill port to a second position away therefrom. Elastomeric means bias the cover plate towards the first position. A fill port adaptor is used to fill the cylinder through the fill port, and may have a cover that prevents operation when the cover is in place. Both covers are adapted to open when the flow controller is properly placed in a cradle that forms part of the fill port adaptor.

Fill port covers

A harness assembly for a backpack includes a pair of straps, a pair of right angle cinch rings, and a buckle. The right angle cinch rings allow the straps to be tightened on the chest of the wearer by pulling on the strap ends which are around the wearer's waist and fastening the buckle. The right angle cinch rings maintain the tightness of the straps on the wearer's chest when the buckle is loosened, preventing the pack from sliding down the wearer's back.

Backpack harness and cinch

Growing community of inventors

Moline, IL, United States of America

Dale L Selhost