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 Title: |
US3664335:
SURGICAL FACE MASK
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| Country: |
US United States of America
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| Inventor: |
Boucher, Wilfred M.; Fanwood, NY
Kurilla, John; Doylestown, PA
Slepp, Alice C.; Teaneck, NJ
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| Assignee: |
International Paper Company, New York, NY
other patents from INTERNATIONAL PAPER CO. (281535) (approx. 928)
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| Published / Filed: |
1972-05-23
/ 1970-02-24
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| Application Number: |
US1970000013507
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| IPC Code: |
Advanced:
A41D 13/11;
IPC-7:
A62B 23/02;
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| ECLA Code: |
A41D13/11B6; A41D13/11M;
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| U.S. Class: |
Current:
128/206.19;
128/863;
Original:
128/146.6;
128/139;
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| Field of Search: |
128/141,146,146.2,146.6,139,146.7
002/206
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| Priority Number: |
| 1970-02-24 |
US1970000013507 |
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| Abstract: |
Disposable surgical face mask comprising a flexible porous pad capable of covering the nose and the mouth of the wearer, the flexible porous pad having an inner layer of non-woven fiber material, an outer layer of non-woven fiber material, and a central layer of filter material. The three layers are stitched together along their horizontal and vertical edges. An elastic binding is secured onto each vertical edge of the flexible porous pad. The flexible porous pad has a first vertical double pleat structure and a second vertical double pleat structure. The first and second vertical double pleat structures are parallel to one another and are spaced a horizontal distance from one another. Each of the vertical double pleat structures is formed by folding the flexible porous pad back on itself a first time and then folding it back on itself a second time thereby forming a "Z" or reverse "Z." A flexible nose strip and a foam strip are situated along the upper horizontal edge of the flexible porous pad. Binding tapes are stitched into the horizontal edges of the flexible porous pad.
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| Attorney, Agent or Firm: |
Smith, Charles B. ;
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| Primary / Asst. Examiners: |
Gaudet, Richard A.; Dunne, G. F.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 2 known family members
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| Claim |
What is claimed is:
1. A surgical face mask, comprising:
- a. a generally rectangular flexible porous pad having a pair of opposed parallel horizontal edges and a pair of opposed parallel vertical edges, said pad having an inner layer and an outer layer of non-woven material and a central layer of filter material, said layers being secured together along their horizontal and vertical edges to form said flexible porous pad;
- b. a pair of elastic binding elements each having a relaxed length which is substantially shorter than the vertical dimension of said pad and each having a distended length substantially equal to the vertical dimension of said pad, said binding elements each being secured to a respective vertical edge of said pad while distended to said distended length thereof so that each of said vertical edges of said pad will be crimped throughout their lengths upon relaxation of said elastic binding elements;
- c. a pair of spaced parallel vertical pleats in said pad extending from the top horizontal edge to the bottom horizontal edge of said pad and defining, respectively, a "Z" configuration and a reversed "Z" configuration in a plane parallel to said horizontal edges, said pleats together defining therebetween a configuration adapted to be popped out into a generally C-shaped vertical cavity extending substantially from the top horizontal edge to the bottom horizontal edge of said pad and being semirigid to maintain said pad away from the wearer's nose and mouth in service; and
- d. means for retaining said flexible porous pad over the nose and mouth of a wearer.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 45 U.S. patent(s) that reference this one
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