US4864653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective shield and visor supporting same
Assignee: Individual
•
Filing: 1988-05-16
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Granted: 1989-09-12
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Expires: 2008-05-16
Abstract
Abstract A mask to protect physicians, dentists and technicians from spatter from patients afflicted with various diseases (including A.I.D.S.) is assembled from two parts, which may be shipped and stored flat, may be sterilized, and are so inexpensive in materials and cost of fabrication that they may be disposed of after use. In one form of the invention, a visor is formed of a flat piece of sheet rubber having two tails provided with interfitting snaps. The tails are brought around the back of the head and the proper snaps or other fasteners adjusted to accommodate the head size of the wearer. This operation causes the flat sheet to assume a curved visor shape fitting around the forehead. In another embodiment, a hole is punched in a curved sheet of elastic material of a size so that it may be drawn down over the head. In a further embodiment, a piece of stretchable rubber-like tubing has opposite ends attached to ends of the tails of the visor. The tubing is stretched around the back of the head, causing the visor to assume an upward convex shape and causing its inner edge to engage the forehead of the wearer. The shape of the sheet provides a bill similar to the preceding modification. Slits are formed near the outer edge of the visor. A transparent shield has dovetail projections on its upper edge which snap through the slits. Other cooperating fastening means may be used to assemble the visor and shield. The shield is supported by the visor and hangs down to about the chin, protecting the eyes, nose and mouth.
Inventors
- 👤 Timothy J. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A42; A42B; A42B1/00; A42B1/018; A42B1/0181; Y; Y10; Y10S; Y10S2/00; Y10S2/908; Y10S2/909
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
A face mask comprising a visor initially formed of a flat sheet of material which is bendable, first means comprising a bill to be attached to the forehead projecting forwardly and second means for attaching the visor to the head of the wearer said second means comprising a first and a second narrow tail, said tails having cooperating fastening means to adjustably fit around the head, said visor being formed with first cooperating means along the outer edge of said visor and a shield of flexible transparent plastic, said shield being initially flat and having an upper edge formed with second cooperating means shaped and positioned to engage said cooperating means so that said shield is supported extending freely substantially vertically downward approximately perpendicular to said visor, said shield being dimensioned to extend down below the mouth and around the face, said first cooperating means comprising at least four spaced slits through the outer edge of said visor and said second cooperating means comprises projections dimensioned to be forced through each of said slits.
Claim 2
Dependent Claim
174 words
A face mask comprising a visor initially formed of a flat sheet of material which is bendable, first means comprising a bill to be attached to the forehead projecting forwardly and second means for attaching the visor to the head of the wearer said second means comprising a first and a second narrow tail, said tails having cooperating fastening means to adjustably fit around the head, said visor being formed with first cooperating means along the outer edge of said visor and a shield of flexible transparent plastic, said shield being initially flat and having an upper edge formed with second cooperating means shaped and positioned to engage said cooperating means so that said shield is supported extending freely substantially vertically downward approximately perpendicular to said visor, said shield being dimensioned to extend down below the mouth and around the face, said first cooperating means comprising at least four spaced slits through the outer edge of said visor and said second cooperating means comprises projections dimensioned to be forced through each of said slits.
Claim 3
Dependent Claim
55 words
A mask according to claim 1 in which said first means further comprises first cooperating means on the rearward edges of said tails, a member formed of a length of stretchable material dimensioned to fit behind the head of the wearer and having second cooperating means on each end engageable with said first cooperating means.
Claim 4
Dependent Claim
34 words
A mask according to claim 2, in which said first cooperating means comprises plural holes in said tails and said second cooperating means secures said ends of said member in one of said holes.
Claim 5
Dependent Claim
28 words
A mask according to claim 1 in which said projections are dovetail, having a maximum width greater than the lengths of said slits when said visor is un-stressed.
Claim 6
Dependent Claim
16 words
A mask according to claim 4 in which the outer corners of said projections are truncated.
Claim 7
Dependent Claim
208 words
A face mask comprising a visor initially formed of a flat sheet of material which is bendable, first means comprising a bill to be attached to the forehead projecting forwardly and second means for attaching the visor to the head of the wearer, said visor being formed with first cooperating means along the outer edge of said visor and a shield of flexible transparent plastic, said shield being initially flat and having an upper edge formed with second cooperating means shaped and positioned to engage said first cooperating means so that said shield is supported extending freely substantially vertically downward approximately perpendicular to said visor, said shield being dimensioned to extend down below the mouth and around the face, said first cooperating means comprising at least four spaced slits through the outer edge of said visor and said second cooperating means comprising projections dimensioned to be forced through said slits, said second means being formed by a hole in said visor, said visor being of a continuous piece of resilient material having an integral narrow band around one end of said hole adapted to fit around the back of the head of the wearer, said visor having a bill on the side of said hole opposite said band.
Claim 8
Dependent Claim
208 words
A face mask comprising a visor initially formed of a flat sheet of material which is bendable, first means comprising a bill to be attached to the forehead projecting forwardly and second means for attaching the visor to the head of the wearer, said visor being formed with first cooperating means along the outer edge of said visor and a shield of flexible transparent plastic, said shield being initially flat and having an upper edge formed with second cooperating means shaped and positioned to engage said first cooperating means so that said shield is supported extending freely substantially vertically downward approximately perpendicular to said visor, said shield being dimensioned to extend down below the mouth and around the face, said first cooperating means comprising at least four spaced slits through the outer edge of said visor and said second cooperating means comprising projections dimensioned to be forced through said slits, said second means being formed by a hole in said visor, said visor being of a continuous piece of resilient material having an integral narrow band around one end of said hole adapted to fit around the back of the head of the wearer, said visor having a bill on the side of said hole opposite said band.
Claim 9
Dependent Claim
14 words
A mask according to claim 1 in which said fastening means are interfitting snaps.
Claim 10
Dependent Claim
14 words
A mask according to claim 1 in which said fastening means are Velcro-like materials.
Claim 11
Dependent Claim
32 words
A mask according to claim 1 in which said fastening means comprises a buckle in one said tail and means adapted to be engaged by said buckle in the other said tail.
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |