Patent US5444288A successfully refreshed from Google Patents.
Patent US4945574A successfully refreshed from Google Patents.
US4945574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective mask
Assignee: DHL A CORP OF
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Filing: 1989-03-02
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Granted: 1990-08-07
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Expires: 2009-03-02
Abstract
Abstract A protective mask comprising an imperforate, transparent shield mounted on the brow and extending over the face of a person wearing the mask. The shield includes an anteriorly protruding portion spaced sufficiently away from the wearer's face to enable spectacles or other optical devices to be worn by the user. The anteriorly protruding portion includes an outwardly flaring upper portion and a downwardly flaring lower portion, with the junction between the upper and lower portions being a non-sharp, gradually curved section which minimizes the amount of visual distortion experienced by the user. Attached in a longitudinal fashion, adjacent each side edge of the shield, is a malleable, form-adjusting strip, the bending of which foreshortens the shield, causing it to bow-out anteriorally to accommodate the use of a variety of sized eyegear to be worn with the mask.
Inventors
- 👤 F. Joseph Dagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1184
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
A protective mask for use by a person, said mask comprising mount means for securing said mask onto the head of said person, imperforate shield means supported by said mounting means and disposed therebelow, said shield means being formed of a transparent material and being of a sufficient width and height to cover substantially the entire face of said person, said width being defined between opposed side edges, said shield means including an anteriorly protruding portion, said protruding portion including an outwardly flaring upper portion and a downwardly flaring lower portion, and form adjusting means for adjusting and maintaining the contour of said shield means, said form adjusting means comprising elongate strips of malleable, form-retaining material, each of said strips secured adjacent a different one of said opposed side edges of said shield means and bridging said outwardly flaring upper portion and said downwardly flaring lower portion.
Claim 2
Dependent Claim
147 words
A protective mask for use by a person, said mask comprising mount means for securing said mask onto the head of said person, imperforate shield means supported by said mounting means and disposed therebelow, said shield means being formed of a transparent material and being of a sufficient width and height to cover substantially the entire face of said person, said width being defined between opposed side edges, said shield means including an anteriorly protruding portion, said protruding portion including an outwardly flaring upper portion and a downwardly flaring lower portion, and form adjusting means for adjusting and maintaining the contour of said shield means, said form adjusting means comprising elongate strips of malleable, form-retaining material, each of said strips secured adjacent a different one of said opposed side edges of said shield means and bridging said outwardly flaring upper portion and said downwardly flaring lower portion.
Claim 3
Dependent Claim
41 words
The mask of claim wherein said shield means comprises opposed side edges, said form adjusting means comprising elongate strips of malleable, form-retaining material, each of said strips secured adjacent a different one of said opposed side edges of said shield means.
Claim 4
Dependent Claim
25 words
The mask of claim 2 wherein said elongate strips of malleable, form-retaining material bridge said outwardly flaring upper portion and said downwardly flaring lower portion.
Claim 5
Dependent Claim
12 words
The mask of claim 1 wherein said malleable, formretaining material comprises aluminum.
Claim 6
Dependent Claim
27 words
The mask of claim 1 wherein said anteriorly protruding portion comprises a non-sharp, curved junction between said outwardly flaring upper portion and said downwardly flaring lower portion.
Claim 7
Dependent Claim
12 words
The mask of claim 1 wherein said malleable, formretaining material comprises aluminum.
Claim 8
Dependent Claim
23 words
The mask of claim 1 wherein said mounting means comprises a conformable material adapted to be disposed in engagement with the wearer's brow.
Claim 9
Dependent Claim
11 words
The mask of claim 7 wherein said conformable material comprises aluminum.
References Cited (Backward Citations)
DE15181C
Cited
US1475105A
Cited
GB242310A
Cited
US2342982A
Cited
US3038470A
Cited
US3041624A
Cited
US3991753A
Cited
US4583535A
Cited
US4701965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |