Quantcast

Quick-donining full face oxygen mask with inflatable harness and soft foldable lens

Imported: 24 Feb '17 | Published: 06 Jan '04

Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman, Gregory R. Jones

USPTO - Utility Patents

Abstract

A mask and harness system for use in providing breathing oxygen and protection from pollutants for the eyes and respiratory system as might be encountered in high altitude aviation environments. In one preferred embodiment, the mask system has a face seal, a soft flexible lens, a pneumatically-actuated harness, and a regulator with microphone to control the flow of oxygen and to facilitate communications in aircraft flight decks and other aircraft compartments. The system is designed for required five-second donning with one hand and because of the flexible lens, is capable of storage in the relatively preferred on crowded flight decks. It is connected to an oxygen source and, optionally, with aircraft communications. The regulator controls the flow rate of oxygen to the wearer based on altitude and physiological requirements. The regulator includes a valve for purging the condensation-prone moist gases from the lens area and provides positive pressure in the mask. A second preferred embodiment molds the lens and mask seal of a single material having sufficient optical quality and flexibility to accomplish both purposes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the crew mask of the present invention, illustrating the general arrangement of the components.

FIG. 2 is an illustration of the prior art mask and the associated stowage volume for such a mask.

FIG. 3 is perspective view of the mask of the present invention illustrating the stowage volume for the mask of the invention.

FIG. 4 is a vertical view of the prior art masks and their relationship to the range of head sizes to be accommodated by the mask.

FIG. 5 is a vertical view of the present invention mask illustrating the ability of the mask to accommodate to the appropriate range of head sizes.

FIG. 6 is a side view of the mask of the present invention illustrating the sealing portions of the mask and their relationship to the lens in the face of the wearer.

FIG. 7 is a vertical view of the mask illustrating the field of view of the eyes of the wearer and the accommodation of the field of view by the present invention and prior art lenses.

FIG. 8 is a perspective view of a first embodiment of the inflatable mask harness.

FIG. 9 is a rear perspective view of a second embodiment of the inflatable mask of the invention.

FIG. 10 is a rear perspective view of a third embodiment of the inflatable harness of the present invention.

FIG. 11 is a rear perspective view of a fourth embodiment of the inflatable harness of the present invention.

Claims

1. In a quick-donning full face oxygen mask for use in oxygen depleted environments or environments contaminated by smoke or other pollutants, the full face oxygen mask including a flexible mask assembly having a flexibly periphery conformable to a wearer's face, the improvement in the quick-donning full face oxygen mask comprising:

2. The quick-donning full face oxygen mask of claim 1, wherein said flexible optical lens is formed of clear silicone.

3. The quick-donning full face oxygen mask of claim 1, wherein said flexible optical lens is coated with a scratch resistant additive.

4. The quick-donning full face oxygen mask of claim 3, wherein said flexible optical lens is coated with a scratch resistant coating of clear urethane.

5. The quick-donning full face oxygen mask of claim 1, wherein said flexible optical lens is formed of a clear peroxide cured molding grade silicone.

6. The quick-donning full face oxygen mask of claim 1, wherein said flexible mask assembly is formed of a flexible, optically transparent plastic.

7. The quick-donning full face oxygen mask of claim 1, wherein said flexible mask assembly is formed of a flexible, optically transparent silicone.

8. The quick-donning full face oxygen mask of claim 1, wherein said flexible mask assembly comprises a face seal formed of silicone.

9. The quick-donning full face oxygen mask of claim 1, wherein said flexible mask assembly comprises an inflatable harness formed of silicone tubing.

10. The quick-donning full face oxygen mask of claim 1, wherein said flexible mask assembly and said flexible optical lens are formed as a single piece of transparent silicone.

11. The quick-donning full face oxygen mask of claim 10, wherein said flexible mask assembly and said flexible optical lens are formed of an optical quality clear silicone.

12. The quick-donning full face oxygen mask of claim 11, wherein said flexible optical quality lens is coated with an abrasion resistant material.

13. The quick-donning full face oxygen mask of claim 1, wherein said flexible optical quality lens provides a wide field of view to the wearer.