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 Title: |
US4452240:
Respiratory protection apparatus
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Moretti, Anthony L.; San Rafael, CA
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| Assignee: |
E. D. Bullard Company, Bridgeway, CA
other patents from E. D. BULLARD COMPANY (162905) (approx. 59)
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| Published / Filed: |
1984-06-05
/ 1981-10-05
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| Application Number: |
US1981000309207
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| IPC Code: |
Advanced:
A62B 17/04;
A62B 18/00;
Core:
A62B 17/00;
more...
IPC-7:
A62B 7/00;
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| U.S. Class: |
Current:
128/201.18;
128/201.23;
128/201.26;
128/201.28;
Original:
128/201.18;
128/201.26;
128/201.28;
128/201.23;
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| Field of Search: |
128/201.23,201.25,201.26,201.27,201.28,201.18,346,206.12,202.27
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| Priority Number: |
| 1981-10-05 |
US1981000309207 |
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| Abstract: |
A respiratory protection apparatus includes a nose engaging means for urging the outer walls of the nose toward the inner wall, which includes spaced-apart urging members, and a mouthpiece, said nose engaging means being rigidly secured to said mouthpiece. The apparatus further comprises a conduit arrangement for supplying air to said mouthpiece, said mouthpiece secured to a portion of the conduit arrangement, said conduit arrangement being sufficiently rigid so that said conduit arrangement can be used to direct said nose engaging means onto said nose and then direct the mouthpiece into the mouth of the worker. The apparatus further includes a valve for communicating with the conduit arrangement for allowing for the inhalation and exhalation of air.
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| Attorney, Agent or Firm: |
Dilts, Robert W. ;
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| Primary / Asst. Examiners: |
Apley, Richard J.; Macey, Harry J.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 9 claims |
I claim:
1. In combination with a primary respiratory system including a head enclosure and means adapted for supplying air to said head enclosure, an emergency egress respiratory protection apparatus at least partially extending into said head enclosure through an aperture therein, said emergency egress respiratory protection apparatus comprising:
- a nose-engaging means for urging the outer walls of a nose toward the inner wall thereof, which means includes spaced apart urging members;
- a mouthpiece, said nose-engaging means rigidly secured to said mouthpiece;
- conduit means for supplying air to said mouthpiece, said conduit means including a rigid inner conduit rigidly secured in communication with said mouthpiece so that said conduit means can be used to direct said nose-engaging means onto the nose;
- a collapsible outer conduit surrounding said rigid inner conduit having one end sealed about said aperture through said head enclosure of said primary respiratory system with the other end thereof sealingly secured to said rigid inner conduit distally from said mouthpiece, said collapsible outer conduit being collapsed as the rigid inner conduit urges the nose-engaging means onto the nose;
- valve means communicating with said conduit means for allowing inhalation and exhalation of air, said valve means adapted to be connected to a source of air.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 13 U.S. patent(s) that reference this one
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