Respiratory mask and service module

• US 6,629,531 B2
• Filed: 04/17/2001
• Issued: 10/07/2003
• Est. Priority Date: 04/17/2000
• Status: Expired due to Term

• Current Assignee: AVOX Systems Inc (Safran SA)
• Original Assignee: Scott Technologies, Inc. (3M Company)
• Inventors: Castro, Valentin A., Gleason, Colin M.
• Primary Examiner(s): Lewis, Aaron J.
• Application Number:
  US09/836,425
• Publication Number:
  US 20010035188A1
• Time in Patent Office: 903 Days
• Field of Search: 128/205.25, 128/206.15, 128/206.21, 128/206.24, 128/206.26, 128/207.12, 128/201.19, 128/202.27, 128/207.11
• US Class Current: 128/205.25
• CPC Class Codes: A62B 18/08 Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices eye-pieces for protective goggles A61F9/02; composition of materials for the windows or other transparent parts A62D7/00

Abstract

A respiratory mask and service module combination for pressure breathing. The respiratory mask has a hardshell member that extends along the contour of the face toward the peripheral edge of the mask and has a central portion forming a canopy. An inhalation/exhalation valve assembly having two breathing conduits and integrally formed so as to provide communication between the conduits. The assembly mounts externally to the mask such that the valves are capable of being sealed along the outer surface of the respiratory mask. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to limit the scope or meaning of the claims. 37 C.F.R. 1.72(b).

Claims

1. A respiratory mask, comprising:

a hardshell member having a peripheral edge, the hardshell member having a pair of wings extending substantially along the contours of the face of the wearer from the peripheral edge along the cheeks of the wearer inward toward a central portion of the mask, the wings being disposed adjacent to a canopy where the hardshell member extends away from the face of the wearer to define a breathing chamber inside the mask; and

,

an elastomeric material attached to the hardshell member, the elastomeric material having a sealing edge for sealing the breathing chamber defined by the hardshell member, the sealing edge defined by a portion of the elastomeric material extending over the nose, around the sides of the mouth and across the mental protuberance of the wearer, the elastomeric material attached to an inside surface of the wings.

2. The respiratory mask of claim 1, wherein the mask terminates in an elastomeric material portion disposed around at least a portion of the peripheral edge of the hardshell member.

3. The respiratory mask of claim 1, wherein the elastomeric material is disposed along at least a portion of the peripheral edge of the hardshell so as to form an area of elastomeric material extending around the peripheral edge of the hardshell that is free of the hardshell and is disposed adjacent to the elastomeric material covered wings.

4. The respiratory mask of claim 1, wherein the elastomeric material is disposed along substantially the entire perimeter of the hardshell member.

5. The respiratory mask of claim 1, further comprising a rolled edge extending along the periphery of the hardshell member from one side to the other side of the mask and extending under the chin of the wearer.

6. The respiratory mask of claim 1, wherein the hardshell member includes an opening on opposite sides of the nose of the wearer.

7. The respiratory mask of claim 1, wherein the canopy is defined on one side by a planar surface having at least one opening defined therein.

8. The respiratory mask of claim 7, wherein the at least one opening is sized to be capable of receiving an inhalation/exhalation valve assembly.

9. The respiratory mask of claim 7, wherein the planar surface of the hardshell member has a first opening capable of receiving an inhalation valve and a second opening capable of receiving an exhalation valve.

10. The respiratory mask of claim 1, wherein the elastomeric material is attached to the hardshell member through chemical bonding.

11. A respiratory mask and service module combination, comprising:

a respiratory mask having a hardshell member defining a breathing cavity, the hardshell member having a substantially planar surface with a first opening and a second opening defined therein; and

,

a module capable of attaching to the mask such that a first passageway is aligned with the first opening and a second passageway is aligned with the second opening, the module mounted externally to the mask such that the passageways are capable of being sealed along the planar surface of the hardshell member.

12. The respiratory mask and service module combination of claim 11, further comprising a unitary housing enclosing the module.

13. The respiratory mask and service module combination of claim 12, wherein the unitary housing has side walls that align with the walls of the hardshell member to provide an aerodynamic surface.

14. The respiratory mask and service module combination of claim 12, wherein the housing attaches to the straps of a harness system.

15. The respiratory mask and service module combination of claim 11, wherein the planar surface is defined on one side of the hardshell member forming a canopy.

16. The respiratory mask and service module combination of claim 11, wherein inhalation and exhalation valves are arranged in the first and second passageways.

17. The respiratory mask and service module combination of claim 16, wherein the exhalation valve is a pressure-compensated exhalation valve.

18. The respiratory mask and service module combination of claim 11, wherein the first and second passageway are connected by a third passageway formed integrally in the module.

19. A method of forming a respiratory mask, comprising:

providing a respiratory mask having a hardshell member defining a breathing cavity, the hardshell member having a planar surface with a first opening and a second opening defined therein;

providing a module capable of attaching to the mask such that a first passageway is aligned with the first opening and a second passageway is aligned with the second opening, the module having at least one mounting shoulder capable of mounting on the planar surface externally to the mask such that the module is capable of being sealed along the planar surface of the respiratory mask; and

,

attaching the module to the respiratory mask.

20. The method of claim 19, wherein the module is disposed in a unitary housing.

21. The method of claim 20, wherein the unitary housing has side walls that align with the walls of the hardshell member to provide an aerodynamic surface.

22. The method of claim 19, wherein the planar surface is defined on one side of a hardshell member forming a canopy.

23. A respiratory mask, comprising:

a hardshell member having a peripheral edge, the hardshell member having a pair of wings extending substantially along the contour of the face of the wearer from the peripheral edge along the cheeks of the wearer inward toward a central portion of the mask, the wings being disposed adjacent to a canopy where the hardshell member extends away from the face of the wearer to define a breathing chamber inside the mask; and

,

an elastomeric material attached to the hardshell member, the elastomeric material having a sealing edge for sealing the breathing chamber defined by the hardshell member, the sealing edge defined by a portion of the elastomeric material extending over the nose, around the sides of the mouth and across the mental protuberance of the wearer, the elastomeric material attached to an inside surface of the wings and terminating in an elastomeric portion disposed around at least a portion of the peripheral edge of the hardshell member so as to form an area of elastomeric material that is disposed adjacent to the elastomeric material covered wings, the elastomeric portion terminating in a rolled edge extending from one side to the other side of the mask and extending under the chin of the wearer.

24. A respiratory mask and service module combination comprising:

a respiratory mask having a hardshell member forming a breathing cavity with a planar surface having at least one opening defined therein;

a module having at least one conduit for inhalation of a breathing gas extending to the breathing cavity and in fluid communication therewith and having at least one conduit for exhalation extending to the breathing cavity and in fluid communication therewith, the first and second conduit being connected by a passageway between the conduits such that a portion of the breathing gas from the inhalation conduit provides a medium for a pressure compensated exhalation valve, the module mounted externally to the mask such that the conduits are capable of being sealed along the planar surface of the hardshell member; and

,

a unitary planar gasket disposed between the module and the hardshell member on an outside surface of the hardshell member.

25. A respiratory mask and service module combination, comprising:

a respiratory mask having a hardshell member defining a breathing cavity, the hardshell member having a substantially planar surface with a first opening and a second opening;

an elastomeric material attached to the hardshell member, the elastomeric material having a sealing edge for sealing the breathing chamber defined by the hardshell member, the sealing edge defined by a portion of the elastomeric material extending over the nose, around the sides of the mouth and across the mental protuberance of the wearer; and

,

a module capable of attaching to the mask such that a first passageway is aligned with the first opening and a second passageway is aligned with the second opening, the module mounted externally to the mask such that the passageways are capable of being sealed along the planar surface of the hardshell member.

26. The respiratory mask and service module combination of claim 25 wherein the first and second passageways are connected by a third passageway.

27. The respiratory mask and service module combination of claim 25, wherein the first and second passageways include first and second conduits capable of engaging with locking members disposed inside the mask.

28. The respiratory mask and service module combination of claim 27, wherein the first and second conduits have a set of threads disposed thereon for engaging with the locking members.

29. The respiratory mask and service module combination of claim 25, wherein the hardshell member further comprises a pair of wings extending substantially along the contours of the face of the wearer from a peripheral edge along the cheeks of the wearer inward toward a central portion of the mask, the wings being disposed adjacent to a canopy where the hardshell member extends away from the face of the wearer to define the breathing chamber, the elastomeric material attached to an inside surface of the wings.