Breathing face mask

• US 4,069,516 A
• Filed: 07/21/1976
• Issued: 01/24/1978
• Est. Priority Date: 07/21/1976
• Status: Expired due to Term

• Current Assignee: Figgie International, Inc. (Johnson Controls International plc)
• Original Assignee: A-T-O Incorporated
• Inventors: Watkins, Dudley W. Jr.
• Primary Examiner(s): Schroeder, Werner H.
• Assistant Examiner(s): Nerbun, Peter
• Application Number:
  US05/707,221
• Time in Patent Office: 552 Days
• Field of Search: 2/428, 2/429, 2/430, 2/9, 2/6, 128/146.7, 128/141 R, 128/142
• US Class Current: 2/428
• 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 resiliently flexible sealing element conformable to the face of a wearer is supported by and spaced from a mask body by a resiliently flexible web, the sealing element and web extending perimetrically around the open side of the mask body and the hinge web having a bead extending along the opposite sides and across the top of the mask for controlled buckling of the web in a manner mechanically loading the face engaging sealing element.

Claims

1. A face seal comprising, in combination with a body having an open side adapted to fit about facial portions of a user, said body defining a facial portion receiving cavity and having a marginal edge portion around said open side thereof, sealing means adapted to form a seal between said body and the face of a user thereof, said sealing means comprising a resiliently flexible perimetrical sealing element conformable in sealing relation with a face, and a resiliently flexible perimetrical connecting web joining said sealing element to said body in spaced relation thereto, said sealing element normally being suspended from said body by said web in inwardly spaced relation to said marginal edge portion therearound whereby said face mask is conformable in sealing relation to the face of a user independently of said body, said web being formed with a bead extending thereabout adjacent to said marginal edge portion, said bead projecting out of the plane of said web in a manner to mechanically load said sealing element upon predetermined buckling of said web.

2. A face seal according to claim 1 wherein said web extends generally in a transverse manner relative to said sealing element and said marginal edge portion of said body and is hingedly joined to said sealing element and said body adjacent respective opposite perimetrical edge portions thereof.

3. A face seal according to claim 2 wherein said bead projects out of the plane of said web in a direction toward the perimetrical edge portion of said sealing element not hingedly joined to said web.

4. A face seal according to claim 2 wherein said mask body is relatively rigid, shape-sustaining and transparent throughout.

5. A face seal as set forth in claim 2 wherein said sealing element includes a portion extending inwardly of said facial portion receiving cavity to form a socket for receiving the chin of a user.

6. A face seal as set forth in claim 2 wherein said web and said sealing element are of integral one piece construction.