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 Title: |
US4411264:
Supplied air respirator
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Jacobson, Earl B.; Crystal Lake, IL
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| Assignee: |
Nuclear Power Outfitters, Crystal Lake, IL
other patents from NUCLEAR POWER OUTFITTERS (410990) (approx. 3)
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| Published / Filed: |
1983-10-25
/ 1980-07-25
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| Application Number: |
US1980000172425
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| IPC Code: |
Advanced:
A62B 17/04;
IPC-7:
A62B 7/00;
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| ECLA Code: |
A62B17/04;
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| U.S. Class: |
Current:
128/201.23;
055/DIG.021;
096/385;
128/201.15;
128/201.25;
181/224;
181/258;
181/292;
Original:
128/201.23;
128/201.15;
128/201.25;
055/DIG.21;
055/276;
181/258;
181/224;
181/292;
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| Field of Search: |
128/201.15,201.22,201.23,201.24,201.25,201.28,201.29,202.19
055/276,DIG. 21
181/258,224,292
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| Priority Number: |
| 1980-07-25 |
US1980000172425 |
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| Abstract: |
A supplied air respirator having a detachable air flow baffle therein, the baffle having increased air flow efficiency with a low noise operating level. The baffle is formed from a flexible plastic tubing having openings spaced laterally and circumferentially therein and having a foam layer sealingly secured there around and preferably having a cover thereover. The baffle can be formed in a partial or substantially complete loop within the respirator and is detachably secured therein with clips or loops.
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| Attorney, Agent or Firm: |
Winburn & Gray, Ltd. ;
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| Primary / Asst. Examiners: |
Recla, Henry J.;
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 4 claims |
What is claimed and desired to be secured by Letters Patent of the United States is:
1. An improved supplied air respirator adapted to be connected to a source of air, said respirator, said comprising a hood adpted to fit over the head of a user and having at least one clear portion adapted to be positioned over the eyes of the wearer which portion is capable of fogging improvement comprising:
- air flow baffle means detachable from the respirator and adapted to supply air from the air source into the interior of the respirator and including means for increasing the air flow efficiency without increasing the operating noise level of said baffle means;
- said air flow baffle means are adapted to be detachably secured on the inside surface of said respirator, said baffle means including an air flow distribution member shaped and adapted to direct air into at least one portion of said respirator; and
- said air flow baffle means include a flexible tubing having a plurality of lateral openings along the circumference and length thereof and a foam layer sealingly engaged around said length covering said openings, said foam layer substantially uniformly surrounding said tubing along said length thereof and a porous material binding secured around said layer, said binding compressing said layer to eliminate any gaps in said layer and to protect said foam layer.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 12 U.S. patent(s) that reference this one
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