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 Title: |
US4671271:
Protective facial mask
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bishop, Dolores; Oakland, CA 94618
Morris, Mark M.; San Francisco, CA 94114
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| Assignee: |
None
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| Published / Filed: |
1987-06-09
/ 1985-11-27
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| Application Number: |
US1985000802838
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| IPC Code: |
Advanced:
A41D 13/00;
A41D 13/11;
A62B 23/06;
IPC-7:
A61M 15/08;
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| ECLA Code: |
A41D13/11C;
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| U.S. Class: |
Current:
128/206.11;
128/207.11;
128/207.18;
D24/110.1;
Original:
128/206.11;
128/207.18;
128/207.11;
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| Field of Search: |
128/206.11,206.12,206.13,206.16,206.17,206.18,206.19,206.21,206.28,207.11,207.13,207.18,136,132 R
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| Priority Number: |
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| Abstract: |
A protective facial mask covering the oral and nasal cavities. It slips over the user's head and comprises a single generally cylindrical, generally tubular, piece of an expandable impervious material open at each end. Two diametrically opposed ear slots and an opening below and extending between the ear slots hold the mask in place and provide for better conformity to the user's head. A filtered breathing cannula on the interior of the mask allows air to enter the nasal cavity only.
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| Attorney, Agent or Firm: |
Owen, Wickersham & Erickson ;
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| Primary / Asst. Examiners: |
Recla, Henry J.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
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First Claim:
Show all 12 claims |
What is claimed is:
1. A protective facial mask for wearing below the eyes to cover the oral and nasal cavities comprising:
- a single, generally cylindrical, one-piece generally tubular, sheetlike piece of an expandable liquid-impervious material open at each end to provide an upper edge for engaging a wearer's face below the eyes and above the nostrils, and a lower edge for engaging the wearer below the chin;
- said piece having a first retention portion for engaging the head of the wearer at about eye level, two diametrically opposed ear slots therethrough and a second retention portion below said first retention portion and separated from it at the rear by an opening below said ear slots, for engaging the lower part of the head just above the neck; and
- a breathing cannula secured to the interior of said piece opposite said opening, leading from the upper edge of said piece on each side of the wearer's nose to a nostril engaging portion well below said edge, whereby air enters the nasal cavity,
- whereby the two retention portions, the upper and lower edges, and the cannula retain the mask in position to protect the nostrils and mouth while exposing the eyes and ears and enabling nasal breathing.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 100 U.S. patent(s) that reference this one
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