US3918448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary face mask
Assignee: Individual
•
Filing: 1974-03-11
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Granted: 1975-11-11
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Expires: 1994-03-11
Abstract
Abstract A frame forming a substantially semi-ovoid hollow defines a face mask for use by any individual during a spraying operation; e.g., hair spraying in a beauty parlor. Sanitary, disposable, rigid, substantially transparent, pie-plate shaped filter material means are provided of a dual-mode character, adapted to being retained on the mask frame both exteriorly and interiorly.
Inventors
- 👤 Doris C Mccosker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
A; A45; A45D; A45D44/00; A45D44/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
230 words
In a sanitary face mask for use by an individual during spraying having mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured for a portion of a human face, and separate filter material means removably retained on the mask frame means, the improvement wherein the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means is complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a force-fit; and wherein the radially inner surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means is complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means of a force-fit; thus providing dual-mode character to said face mask in that said filter material means is adapted to be removably retained on said radially outer surface of said mask frame means and on said radially inner surface of said mask frame means, at the option of one utilizing said face mask.
Claim 2
Dependent Claim
230 words
In a sanitary face mask for use by an individual during spraying having mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured for a portion of a human face, and separate filter material means removably retained on the mask frame means, the improvement wherein the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means is complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a force-fit; and wherein the radially inner surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means is complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means of a force-fit; thus providing dual-mode character to said face mask in that said filter material means is adapted to be removably retained on said radially outer surface of said mask frame means and on said radially inner surface of said mask frame means, at the option of one utilizing said face mask.
Claim 3
Dependent Claim
218 words
A sanitary face mask, for use by an individual during spraying to close off from spray the eyes, nose, and mouth of the individual, comprising, in combination: mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured to embrace at least that portion of a human face comprising eyes, nose, and mouth; a separate sUbstantially semi-ovoid rigid filter material adapted to be removably retained on said mask frame means; the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a forced-fit; the radially inner surface of an annular edge portion remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means of a forced-fit; and manual support means connected to said mask frame means for supporting said mask frame means manually.
Claim 4
Dependent Claim
218 words
A sanitary face mask, for use by an individual during spraying to close off from spray the eyes, nose, and mouth of the individual, comprising, in combination: mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured to embrace at least that portion of a human face comprising eyes, nose, and mouth; a separate sUbstantially semi-ovoid rigid filter material adapted to be removably retained on said mask frame means; the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a forced-fit; the radially inner surface of an annular edge portion remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means of a forced-fit; and manual support means connected to said mask frame means for supporting said mask frame means manually.
Claim 5
Dependent Claim
183 words
A sanitary face mask, for use by an individual during spraying, comprising, in combination: mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured for a portion of a human face; a separate substantially semi-ovoid rigid filter material means adapted to be removably retained on said mask frame means; the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a forced-fit; and the radially inner surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means for a forced-fit.
Claim 6
Dependent Claim
183 words
A sanitary face mask, for use by an individual during spraying, comprising, in combination: mask frame means forming a hollow substantially semi-ovoid with a perimeter suitably contoured for a portion of a human face; a separate substantially semi-ovoid rigid filter material means adapted to be removably retained on said mask frame means; the radially outer surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially inner surface of an annular edge portion of said filter material means, such that said filter material means is adapted for removable retention about said radially outer surface of said mask frame means by means of a forced-fit; and the radially inner surface of an annular edge portion most remote from the suitably contoured perimeter of said mask frame means being complementally configured to the radially outer surface of said annular edge portion of said filter material means, such that said filter material means is adapted for removable retention within said radially inner surface of said mask frame means by means for a forced-fit.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |