Patent US4964171A successfully refreshed from Google Patents.
US4964171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective shield and visor
Assignee: Individual
•
Filing: 1989-05-19
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Granted: 1990-10-23
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Expires: 2009-05-19
Abstract
Abstract A mask protects doctors, dentists and technicians, on the one hand, and their patients, on the other, from cross-contamination with various viruses and germs. The mask is inexpensive and hence disposable after a single use, if desired. Various types of visors fit on the head of the wearer. Fixed to the forward projecting edge of the visor is a shield which extends down to protect the eyes, nose and mouth and around the sides. The shield may be attached to the edge of the visor by adhesives such as glue, heat sealing, ultrasonic welding or other suitable means.
Inventors
- 👤 Timothy J. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1184; Y; Y10; Y10S; Y10S2/00; Y10S2/908; Y10S2/909
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
196 words
A two-piece, disposable mask comprising a visor of a rubber-like material having a substantially horizontal, forward extending bill having upper and lower surfaces terminating in a substantially vertical front edge when in place on the head of the wearer, said front edge having substantial thickness, first attachment means for attaching said visor to the head of a wearer, and a substantially vertical shield formed of a flexible transparent plastic having an inner surface and an outer surface, an upper edge, said shield extending downward to protect the face of the wearer, and second attachment means for permanently fixing said inner surface of said shield to the thickness of said front edge of said bill with said upper edge vicinal the upper surface of said bill and extending around said front edge, said front edge being curved approximately parallel to the forehead of the wearer of said shield curving about said front edge around the sides of the face of the wearer, said second attachment means permanently adhering said shield directly to said front edge, said shield extending around the sides of the face of the wearer and covering the eyes, nose and mouth of the wearer.
Claim 2
Dependent Claim
196 words
A two-piece, disposable mask comprising a visor of a rubber-like material having a substantially horizontal, forward extending bill having upper and lower surfaces terminating in a substantially vertical front edge when in place on the head of the wearer, said front edge having substantial thickness, first attachment means for attaching said visor to the head of a wearer, and a substantially vertical shield formed of a flexible transparent plastic having an inner surface and an outer surface, an upper edge, said shield extending downward to protect the face of the wearer, and second attachment means for permanently fixing said inner surface of said shield to the thickness of said front edge of said bill with said upper edge vicinal the upper surface of said bill and extending around said front edge, said front edge being curved approximately parallel to the forehead of the wearer of said shield curving about said front edge around the sides of the face of the wearer, said second attachment means permanently adhering said shield directly to said front edge, said shield extending around the sides of the face of the wearer and covering the eyes, nose and mouth of the wearer.
Claim 3
Dependent Claim
54 words
A mask according to claim 1 in which said visor is formed of a single piece of rubber-like material formed with an ellipsoid hole of a shape to receive the upper part of the head of the wearer projecting therethrough, the portion of said visor rearward of said bill comprising said first attachment means.
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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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |