Half-mask respirator with head harness assembly

• US 6,732,733 B1
• Filed: 03/27/2000
• Issued: 05/11/2004
• Est. Priority Date: 10/03/1997
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Solyntjes, Alan J., Mittelstadt, William A., Castiglione, David M., Brostrom, Gerald M.
• Primary Examiner(s): Lewis, Aaron J.
• Application Number:
  US09/535,847
• Time in Patent Office: 1,506 Days
• Field of Search: 128/206.27, 128/207.11, 128/207.13, 128/207.18, 128/207.17, 128/201.22, 128/205.25, 128/206.28
• US Class Current: 128/206.27
• CPC Class Codes: A41D 13/1146 obtained by moulding
• CPC Class Codes: A62B 18/084 Means for fastening gas-masks to heads or helmets

Abstract

A half-mask respirator is retained on a wearer'"'"'s head by upper and lower straps and a strap support. The upper and lower straps connect to the strap support at upper and lower strap attachment points on each side of the strap support. The distances between the attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer'"'"'s skull and the half-mask respirator is mounted over the wearer'"'"'s nose and mouth. As a result, the lower strap is supported above the neck of the wearer which eliminates a potential source of discomfort for the wearer.

Claims

1. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a strap support located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the strap support, the upper straps connected to the strap support at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the strap support, the lower straps connected to the strap support at lower strap attachment points, wherein the at least two lower straps do not extend around the back of the wearer'"'"'s neck;

wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer;

and wherein the support crown comprises an adjustment mechanism, wherein the distances between the lower strap attachment points on opposite sides of the support crown are adjustable.

2. The respirator of claim 1, wherein the strap support comprises a support crown.

3. The respirator of claim 1, wherein the strap support comprises a skull cap.

4. The respirator of claim 1, further comprising a hard hat attached to the strap support.

5. The respirator of claim 1, wherein the lower straps are connected to the respirator body below the strap support when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer.

6. The respirator of claim 1, wherein the strap support comprises a plurality of upper strap attachment points.

7. The respirator of claim 1, wherein the strap support comprises a plurality of lower strap attachment points.

8. The respirator of claim 1, wherein the strap support comprises a plurality of upper strap attachment points and a plurality of lower strap attachment points.

9. The respirator of claim 1, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

10. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a support crown located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the support crown, the upper straps connected to the support crown at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the support crown, wherein the lower straps are connected to the support crown at lower strap attachment points, and further wherein the lower straps are connected to the respirator body below support crown when the support crown is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer.

11. The respirator of claim 10, wherein the support crown comprises a plurality of upper strap attachment points.

12. The respirator of claim 10, wherein the support crown comprises a plurality of lower strap attachment points.

13. The respirator of claim 10, wherein the support crown comprises a plurality of upper strap attachment points and a plurality of lower strap attachment points.

14. The respirator of claim 10, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

15. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a strap support located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the strap support, the upper straps connected to the strap support at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the strap support, the lower straps connected to the strap support at lower strap attachment points;

wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

and wherein the strap support comprises an adjustment mechanism, wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are adjustable.

16. The respirator of claim 15, wherein the lower straps are connected to the respirator body below the strap support when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer.

17. The respirator of claim 15, wherein the strap support comprises a plurality of upper strap attachment points.

18. The respirator of claim 15, wherein the strap support comprises a plurality of lower strap attachment points.

19. The respirator of claim 15, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

20. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a strap support located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the strap support, the upper straps connected to the strap support at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the strap support, the lower straps connected to the strap support at lower strap attachment points;

wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

and wherein the strap support comprises an adjustment mechanism, wherein the distances between the upper tap attachment points on opposite sides of the strap support are adjustable.

21. The respirator of claim 20, wherein the lower straps are connected to the respirator body below the strap support when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer.

22. The respirator of claim 20, wherein the strap support comprises a plurality of lower strap attachment points.

23. The respirator of claim 20, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

24. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a strap support located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the strap support, the upper straps connected to the strap support at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the strap support, the lower straps connected to the strap support at lower strap attachment points;

wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

and wherein the strap support comprises an adjustment mechanism, wherein the distances between the lower strap attachment points on opposite sides of the strap support are adjustable.

25. The respirator of claim 24, wherein the lower straps are connected to the respirator body below the strap support when the strap support is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer.

26. The respirator of claim 24, wherein the strap support comprises a plurality of lower strap attachment points.

27. The respirator of claim 24, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

28. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a support crown located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides to an upper portion of the respirator body to opposing sides of the support crown, the upper straps connected to the support crown at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the support crown, wherein the lower straps are connected to the support crown at lower strap attachment points, and further wherein the lower straps are connected to the respirator body below support crown when the support crown is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer;

and wherein the support crown comprises an adjustment mechanism, wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are adjustable.

29. The respirator of claim 28, wherein the support crown comprises a plurality of upper strap attachment points and a plurality of lower strap attachment points.

30. The respirator of claim 28, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

31. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a support crown located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the support crown, the upper straps connected to the support crown at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the support crown, wherein the lower straps are connected to the support crown at lower strap attachment points, and further wherein the lower straps are connected to the respirator body below support crown when the support crown is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer;

and wherein the support crown comprises an adjustment mechanism, wherein the distances between the upper strap attachment points on opposite sides of the support crown are adjustable.

32. The respirator of claim 31, wherein the support crown comprises a plurality of upper strap attachment points.

33. The respirator of claim 31, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.

34. A half-mask respirator that comprises:

a half-mask respirator body configured to cover the nose and mouth of the wearer;

a support crown located on the wearer'"'"'s skull when the respirator body is in position over the nose and mouth of the wearer;

at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the support crown, the upper straps connected to the support crown at upper strap attachment points; and

at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the support crown, wherein the lower straps are connected to the support crown at lower strap attachment points, and further wherein the lower straps are connected to the respirator body below support crown when the support crown is located on the wearer'"'"'s skull and the respirator body is in position over the nose and mouth of the wearer;

wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer;

and wherein the support crown comprises an adjustment mechanism, wherein the distances between the lower strap attachment points on opposite sides of the support crown are adjustable.

35. The respirator of claim 34, wherein the support crown comprises a plurality of lower strap attachment points.

36. The respirator of claim 34, wherein at least two of the upper and lower straps comprise a single continuous integral strap body.