Patent US4852185A successfully refreshed from Google Patents.
US4852185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective face shield
Assignee: Individual
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Filing: 1987-10-13
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Granted: 1989-08-01
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Expires: 2007-10-13
Abstract
Abstract A protective face shield intended primarily for use by health care professionals to reduce the transmission of infectious diseases carried by viral and bacterial emissions from the noses and throats of afflicted patients. The protective face shield comprises a generally flat crescent-shaped semi-rigid body member adapted to engage the forehead of the wearer. It includes a resilient head-engaging means to attach the body member to the wearer's head. The body member supports a depending semi-rigid face-covering transparent sheet which forms a barrier to the transmission of disease causing organisms. Vents are provided in the body member to prevent fogging of the shield.
Inventors
- 👤 David V. Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:50
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1184
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
A protective face shield comprising: (A) a generally flat crescent-shaped semi-rigid body member composed of synthetic resinous plastic foam having a forehead-engaging rearward edge, (B) resilient head-engaging means attached to said body member for securing the body member to a wearer's head, (C) vertical vent means through said body member, and (D) a semi-rigid face-covering transparent sheet fixedly secured to the forward edge of said body member and depending therefrom.
Claim 2
Dependent Claim
70 words
A protective face shield comprising: (A) a generally flat crescent-shaped semi-rigid body member composed of synthetic resinous plastic foam having a forehead-engaging rearward edge, (B) resilient head-engaging means attached to said body member for securing the body member to a wearer's head, (C) vertical vent means through said body member, and (D) a semi-rigid face-covering transparent sheet fixedly secured to the forward edge of said body member and depending therefrom.
Claim 3
Dependent Claim
22 words
A face shield according to claim 1 wherein the forward edge of said body member is beveled inwardly from the topmost surface.
Claim 4
Dependent Claim
22 words
A face shield according to claim 1 wherein the rearward edge of said body member is beveled outwardly from the topmost surface.
Claim 5
Dependent Claim
48 words
A face shield according to claim 1 wherein said vent means comprise a plurality of generally vertical holes through said body member, at least one of said holes being of a size to function as a finger hold to facilitate putting the shield on and taking it off.
Claim 6
Dependent Claim
25 words
A face shield according to claim 4 wherein said holes are of varying diameters diminishing from the mid-point of said body member toward its ends.
Claim 7
Dependent Claim
28 words
A face shield according to claim 1 wherein said head-engaging means comprises an elastic band, the ends of which are attached to the ends of said body member.
Claim 8
Dependent Claim
19 words
A face shield according to claim 1 wherein said transparent sheet is composed of synthetic resinous plastic sheet material.
Claim 9
Dependent Claim
128 words
A protective face shield comprising: (A) a generally flat crescent-shaped semi-rigid body member composed of synthetic resinous plastic foam and having a forehead-engaging rearward edge, (B) an elastic head-engaging band connected at its ends to the ends of the body member for securing the body member to a wearer's head, (C) a plurality of generally vertical vent holes through said body member, at least one of said holes being of a size to function as a finger hold to facilitate putting the shield on and taking it off, said holes being of varying diameters diminishing from the mid-point of said body member toward its ends, and (D) a semi-rigid face-covering transparent synthetic resinous plastic sheet fixedly secured to the forward edges of said body member and depending therefrom.
Claim 10
Dependent Claim
128 words
A protective face shield comprising: (A) a generally flat crescent-shaped semi-rigid body member composed of synthetic resinous plastic foam and having a forehead-engaging rearward edge, (B) an elastic head-engaging band connected at its ends to the ends of the body member for securing the body member to a wearer's head, (C) a plurality of generally vertical vent holes through said body member, at least one of said holes being of a size to function as a finger hold to facilitate putting the shield on and taking it off, said holes being of varying diameters diminishing from the mid-point of said body member toward its ends, and (D) a semi-rigid face-covering transparent synthetic resinous plastic sheet fixedly secured to the forward edges of said body member and depending therefrom.
Claim 11
Dependent Claim
22 words
A face shield according to claim 8 wherein the forward edge of said body member is beveled inwardly from the topmost surface.
Claim 12
Dependent Claim
22 words
A face shield according to claim 8 wherein the rearward edge of said body member is beveled outwardly from the topmost surface.
References Cited (Backward Citations)
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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) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |