Molded head harness

• US 5,394,568 A
• Filed: 01/28/1993
• Issued: 03/07/1995
• Est. Priority Date: 01/28/1993
• Status: Expired due to Fees

• Current Assignee: 3M Company
• Original Assignee: 3M Company
• Inventors: Byram, David C., Brostrom, Gerald M.
• Primary Examiner(s): Crowder, Clifford D.
• Assistant Examiner(s): Neas, Michael A.
• Application Number:
  US08/010,546
• Time in Patent Office: 768 Days
• Field of Search: 2/9, 2/11, 2/452, 2/173, 2/181, 2/209.13, 2/410, 2/424, 128/201.22, 128/201.23, 128/201.24, 128/201.25, 128/201.29, 128/206.12, 128/206.24, 128/206.27, 128/206.28, 128/207.11
• US Class Current: 2/452
• CPC Class Codes: A62B 18/084 Means for fastening gas-masks to heads or helmets

Abstract

An insert-molded head harness for use in securing a respirator mask to the face of a wearer, wherein the head harness comprises a web having a central portion and a peripheral portion extending at least partially around the central portion, and a plurality of elastomeric fastening straps having first and second ends, the first ends being integrally bonded to the peripheral portion of the web and the second ends being adapted to be used in securing a respirator mask to the face of a wearer. The head harness can include an elastomeric flange which comprises an elastomeric resin and embeds the peripheral portion of the web. The web preferably comprises a material selected from the group consisting of woven, knitted, and non-woven materials.

Claims

1. A head harness comprising

(a) a web comprising a central portion and a peripheral portion extending at least partially around the central portion, said web being a fabric mesh;

(b) a plurality of elastomeric fastening straps having first and second ends, the first ends being integrally bonded to the peripheral portion of the web and the second ends being adapted to be used in securing a respirator mask to the face of a wearer; and

(c) an elastomeric flange which comprises an elastomeric resin, wherein the peripheral portion of the web is embedded on the elastomeric resin to thereby integrally bond the elastomeric flange to the web, and wherein the first ends of the elastomeric fastening straps are integrally bonded to the peripheral portion of the web through an integral bonding of the first ends of the elastomeric straps to the elastomeric flange.

2. The head harness of claim 1 wherein the web comprises a material selected from the group consisting of woven, knitted, and non-woven materials.

3. The head harness of claim 1 wherein the peripheral portion of the web extends substantially completely around the central portion of the web.

4. The head harness of claim 1 wherein the fabric mesh is selected from the group consisting of polypropylene fabric meshes and polyester fabric meshes.

5. The head harness of claim 1 wherein the elastomeric resin is selected from the group consisting of styrene-butadiene-styrene block copolymers, ethylene propylene diene terpolymer, neoprene, and silicone.

6. The head harness of claim 1 wherein the elastomeric resin comprises a styrene-butadiene-styrene block copolymer.

7. A head harness comprising:

(a) a web comprising a central portion and a peripheral portion extending at least partially around the central portion;

(b) an elastomeric flange comprising an elastomeric resin, wherein the peripheral portion of the web is embedded in the elastomeric resin to thereby integrally bond the elastomeric flange to the web; and

(c) a plurality of fastening straps having first and second ends, the first ends being secured to the elastomeric flange and the second ends being adapted to be used in securing a respirator mask to the face of a wearer.

8. The head harness of claim 7 wherein the first ends of the fastening straps are integrally bonded to the elastomeric flange.

9. The head harness of claim 7 wherein the web comprises a material selected from the group consisting of woven, knitted, and non-woven materials.

10. The head harness of claim 7 wherein the peripheral portion of the web extends substantially completely around the central portion of the web.

11. The head harness of claim 7 wherein the web comprises a fabric mesh selected from the group consisting of polypropylene fabric meshes and polyester fabric meshes.

12. The head harness of claim 7 wherein the elastomeric resin is selected from the group consisting of styrene-butadiene-styrene block copolymers, ethylene propylene diene terpolymer, neoprene, and silicone.

13. The head harness of claim 7 wherein the elastomeric resin comprises a styrene-butadiene-styrene block copolymer.

14. A respirator mask assembly comprising:

a) a facepiece comprising at least one inhalation port, inhalation valve, and inhalation filter suitable for removing contaminants from inhaled gases and vapors and comprising at least one exhalation port and exhalation valve for expelling exhaled gases from the facepiece;

b) a face seal supported by the facepiece; and

c) a head harness comprising;

1) a web having a central portion and a peripheral portion extending at least partially around the central portion, said web being a fabric mesh;

2) a plurality of elastomeric fastening straps having first and second ends, the first ends being in integrally bonded to the peripheral portion of the web and at least one of the second ends being secured to the face piece, and

3) an elastomeric flange which comprises an elastomeric resin, wherein the peripheral portion of the web is embedded on the elastomeric resin to thereby integrally bond the elastomeric flange to the web, and wherein the first ends of the elastomeric fastening straps are integrally bonded to the peripheral portion of the web through an integral bonding of the first ends of the elastomeric straps to the elastomeric flange.

15. The respirator mask assembly of claim 14 wherein the web comprises a material selected from the group consisting of woven, knitted, and non-woven materials.

16. The respirator mask assembly of claim 14 wherein the peripheral portion of the web extends substantially completely around the central portion of the web.

17. The respirator mask assembly of claim 14 wherein the fabric mesh is selected from the group consisting of polypropylene fabric meshes and polyester fabric meshes.

18. The respirator mask assembly of claim 14 wherein the elastomeric resin is selected from the group consisting of styrene-butadiene-styrene block copolymers, ethylene propylene diene terpolymer, neoprene, and silicone.

19. The respirator mask assembly of claim 14 wherein the elastomeric resin comprises a styrene-butadiene-styrene block copolymer resin.