US4195629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask
Assignee: Sage Products LLC
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Filing: 1974-07-31
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Granted: 1980-04-01
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Expires: 1994-07-31
Abstract
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.
Inventors
- 👤 George C. Halford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1161
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
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.
Claim 2
Dependent Claim
176 words
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.
Claim 3
Dependent Claim
45 words
The combination as claimed in claim 1, wherein the central section of the body is provided with a member of an area to cover a substantial portion of said section, said cover member being fastened to said area around the edges of said cover member.
Claim 4
Dependent Claim
41 words
The combination as claimed in claim 2, wherein the cover member in position provides a pocket in which a disc of air filtering material is loosely positioned, said disc being thinner than the space between the cover member and the body.
Claim 5
Dependent Claim
22 words
The connection as claimed in claim 2, wherein the body and the cover member are formed of 80 pore non-rigid polyurethane foam.
Claim 6
Dependent Claim
57 words
The combination as claimed in claim 1, wherein the extremities of the earpiece members comprise relatively straight, thin areas, said areas being positionable behind the ears of a wearer of the mask and the portion of the triangular area therealong being substantially the length of the connection of a wearer's ears with the head of such wearer.
Claim 7
Dependent Claim
19 words
The combination as claimed in claim 3, wherein the disc of air filtering material is of non-woven rayon fiber.
References Cited (Backward Citations)
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Cited
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US2458580A
Cited
US2494406A
Cited
US3042034A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |