| Patent Number |
Title Of Patent |
Date Issued |
| D550360 |
Portable oxygen concentrator |
September 4, 2007 |
|
| D468017 |
Portable oxygen supply apparatus |
December 31, 2002 |
|
| D418599 |
Oxygen flow controller |
January 4, 2000 |
|
| D311061 |
Air separator |
October 2, 1990 |
|
| 7156903 |
Sound enclosure for portable oxygen concentrators |
January 2, 2007 |
| A portable pressure swing adsorption apparatus and conservation device for medical use, and a sound enclosure for the apparatus having two isolating sections to enclose the apparatus, the enclosure having an inlet in one of the sections for allowing ambient air into the enclosure and an |
| 7011092 |
Portable hypoxic apparatus |
March 14, 2006 |
| Hypoxic delivery apparatus producing from ambient air a product gas having a lower levels of oxygen concentration and delivering the product gas to a user of the apparatus in pulse doses. Alternatively, the apparatus may include a selector for alternately delivering either a nitrogen enr |
| 6959728 |
Rotary cam valve |
November 1, 2005 |
| A multiple fluid flow controller valve device having radially disposed a number of valves and a central rotary shaft with cam surfaces functioning as the valve controller to open and close the valves in the desired sequence. |
| 6949133 |
Portable oxygen concentrator |
September 27, 2005 |
| A compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable times and in selectable |
| 6935612 |
Solenoid valve |
August 30, 2005 |
| The solenoid valve of the present invention includes an armature with a protrusion and a plug nut with a recess for receiving the protrusion. The protrusion includes a polymer o-ring. The protrusion is configured such that it slides freely within the recess. The o-ring contacts the plug |
| 6935460 |
Noise muffler for oxygen concentrator |
August 30, 2005 |
| A noise muffler for the exhaust of waste gases from apparatus such as an oxygen concentrator, including a muffler core with an inlet to receive the waste gases and a plurality of bores in the core first to direct the waste gases through a filter material and a cap enclosing the filter ma |
| 6908503 |
Reduced noise oxygen concentrator |
June 21, 2005 |
| A pressure swing adsorption apparatus for producing a gas mixture with a higher concentration of a particular gas such as oxygen from ambient air, in which the noisier components of the apparatus are contained in an internal removable module that is separated by sound insulation from the |
| 6764534 |
Portable oxygen concentrator |
July 20, 2004 |
| A compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable times and in selectable |
| 6558451 |
Multiple bed pressure swing adsorption method and apparatus |
May 6, 2003 |
| A compact multiple bed pressure swing adsorption apparatus to produce a high concentration of oxygen efficiently and at minimum noise levels by using inactive pressurized adsorber beds to purge adsorbed nitrogen. |
| 6427690 |
Combined oxygen regulator and conservation device |
August 6, 2002 |
| A combination flow regulator and conservation device, for oxygen gas or oxygen concentrated gas, attachable to an oxygen tank or wall outlet of a master oxygen system and containing a gas regulator and a control circuit to control both the effective rate and timing of the flow of gas thr |
| 6212957 |
Fluid flowmeter and method of assembly |
April 10, 2001 |
| A ball type flowmeter having an external transparent housing on which a flow rate scale is pre-printed, and contained in the housing is a transparent tube having a floating ball, the tube being slidable in the housing and having upper and lower flanges to be moved into and then fixed |
| 6186477 |
Gas by-pass valve |
February 13, 2001 |
| A pressurized gas flow controlling microvalve having a casing and cap which together define a valve chamber having gas flow inlet and outlet ports and a plunger positioned within the valve chamber moveable from a closed position sealing the outlet port to an open position permitting gas |
| 6065473 |
Non-contact gas dispenser and apparatus for use therewith |
May 23, 2000 |
| A non-contact gas dispenser comprising a head set apparatus, a gas source and a conduit for directing the desired gas to a region proximate to the user's nose and mouth. The gas source preferably is a pressure swing adsorption apparatus that allows the user to select one of at least two |
| 5531807 |
Apparatus and method for supplying oxygen to passengers on board aircraft |
July 2, 1996 |
| An apparatus and method for supplying oxygen to passengers on board an aircraft in the form of a portable machine including a housing having a shape and size allowing it to be positioned under a seat on the aircraft, an air separation device in the housing for separating oxygen from the |
| 5474595 |
Capacity control system for pressure swing adsorption apparatus and associated method |
December 12, 1995 |
| A pressure swing adsorption apparatus including a compressor for pumping a flow of a gaseous mixture through an adsorption medium utilizes a capacity control system by which the operating capacity of the compressor can be preselected. The capacity control system is disposed upstream, i.e |
| 4973339 |
Pressure swing absorption process and system for gas separation |
November 27, 1990 |
| A pressure swing adsorption process and system for generating gaseous streams which are high in oxygen purity and high in nitrogen purity utilize a first adsorption zone adapted to principally adsorb oxygen from a feed stream containing oxygen, nitrogen and argon via kinetic separation |
| 4892566 |
Pressure swing adsorption process and system |
January 9, 1990 |
| A pressure swing adsorption process and system utilize a single adsorber for fractionating at least one constituent from a stream of a gaseous mixture fed into the adsorber and a reservoir for receiving product gas exiting the adsorber. Following a step in the process operation involving |
| 4802899 |
Pressure swing adsorption apparatus |
February 7, 1989 |
| An air separator for separating at least one constituent element from air delivered from an air source by a pair of adsorption beds utilizes a control box and assembly of working components arranged in such a relationship to one another within the control box so as to facilitate serv |
