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 Title: |
US4195629:
Face mask
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Halford, George C.; Mentor, OH
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| Assignee: |
Halbrand, Inc., Willoughby, OH
other patents from HALBRAND, INC. (237975) (approx. 4)
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| Published / Filed: |
1980-04-01
/ 1974-07-31
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| Application Number: |
US1974000493707
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| IPC Code: |
Advanced:
A41D 13/11;
IPC-7:
A62B 7/00;
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| ECLA Code: |
A41D13/11C;
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| U.S. Class: |
Current:
128/206.13;
Original:
128/206.13;
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| Field of Search: |
128/146.2,146,146.3-147,205,163,137,140 R
002/206
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| Priority Number: |
| 1974-07-31 |
US1974000493707 |
| 1970-10-23 |
US1970000083544 |
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| Abstract: |
The invention disclosed herein relates to face masks which are formed of a polyurethane foam material which is designed to be easily positioned upon the face of the wearer, of light weight without ties but depending upon the formation of certain openings to slip over ears. The mask is furthermore of a free breathing type and without tendency to fog. Additionally, by reason of the construction a filter pad of non-woven rayon fiber may be used to increase the filtration and at the same time not markedly affect audibility in use.
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| Attorney, Agent or Firm: |
Robb, Frank B. ;
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| Primary / Asst. Examiners: |
Truluck, Dalton L.;
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| INPADOC Legal Status: |
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| Parent Case: |
This application is a continuation of application Ser. No. 83,544 filed Oct. 23, 1970, now abandoned.
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| Family: |
None
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First Claim:
Show all 6 claims |
I claim:
1. A face mask of the class described, when disposed on the face of a user, comprising a generally rectilinear, relatively thin, normally flat, uniform thickness plastic foam material body, having a central section covering the oral and nasal passage areas of the face of a user, a pair of earpiece members extending from the central section, each of said members having a generally triangular opening therein, certain of the apices of said openings being closely adjacent the central section aforesaid, whereby triangular areas of the body alongside the said openings provide the connection of the central section with the earpiece members, the ears of the user extending through the openings and said triangular areas on each side being twisted into overlapping relationship, causing the central section to conform closely to the chin and nose of the user of such mask, and the portions of said triangular openings at said apices providing a looser positioning of the mask material at said apices, and more close conformance to facial contours spaced therefrom toward the ears of such user.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 25 U.S. patent(s) that reference this one
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