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 Title: |
US5355878:
Breathing equipment for aircrew
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Griffiths, Joseph A.; Haslemere, United Kingdom
Smeaton, Donald M.; Brighton, United Kingdom
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| Assignee: |
Cam Lock (UK) Ltd., Farnborough Hants., United Kingdom
other patents from CAM LOCK (UK) LTD. (705573) (approx. 1)
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| Published / Filed: |
1994-10-18
/ 1993-02-22
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| Application Number: |
US1993000958108
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| IPC Code: |
Advanced:
A62B 18/02;
A62B 18/08;
Core:
A62B 18/00;
IPC-7:
A62B 18/02;
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| ECLA Code: |
A62B18/02A; A62B18/08B;
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| U.S. Class: |
Current:
128/206.24;
002/002.14;
128/201.23;
128/202.11;
128/205.25;
600/020;
Original:
128/206.24;
128/205.25;
128/202.11;
128/201.23;
002/002.14;
600/020;
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| Field of Search: |
600/019,20
128/205.25,206.21,206.23,206.24,206.28,207.11,202.11,201.23,201.22,201.24
002/2.14,2.11
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| Priority Number: |
| 1990-06-26 |
GB1990000014212 |
| 1991-05-22 |
GB1991000011070 |
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| Abstract: |
A facemask incorporating breathing equipment for use with a flying helmet (2) comprises a rigid outer shell (4) in which a flexible face-piece (3) is housed whose periphery makes an airtight seal with the pilot's face (1). The face-piece (3) includes an inhalatory valve (11) and an expiratory valve (9) and the rigid shell (4) is attached to the helmet (2) by a harness (5) which keeps the shell (4) at a fixed distance from the helmet (2). Inflatable means (15, 20) are provided between the shell (4) which are inflated to press the periphery (14) of the face-piece towards the pilot's face when the pressure of breathable gas supplied to the interior of the mask and to said inflatable means increases above that required for normal breathing. Alternatively, the face-piece (3) can include extendable means in the form of a re-entrant section (30, 34, 35) or bellows section (36) which extends in a direction towards the pilot's face when the pressure of the breathable gas supplied to the interior of the face-piece (3)increases above that required for normal breathing.
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| Attorney, Agent or Firm: |
Dilworth & Barrese ;
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| Primary / Asst. Examiners: |
Burr, Edgar S.; Raciti, Eric P.
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
CA EP US DE ES FR GB IT SE
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| Family: |
Show 11 known family members
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First Claim:
Show all 18 claims |
We claim:
1. A facemask incorporating breathing equipment for use with an aircrew flying helmet comprising a rigid outer shell and a flexible face-piece, said flexible face-piece having a periphery adapted to make a seal with a pilot's face, the face-piece incorporating an inspiratory and expiratory valve and the outer shell having means for attaching said outer shell at a fixed distance from the helmet, and extendable means located between the rigid shell and the face-piece, said extendable means to selectively press the periphery of the face-piece towards the pilot's face to improve the seal therewith and means automatically operable in response to gas at a pressure above that required for normal breathing to reconfigure the extendable means to press the periphery of the face-piece toward the pilot's face.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| PCT Number: |
PCT/GB91/01034
WO9200120
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| PCT Pub./Filed Dates: |
1992-01-09 / 1991-06-26
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| § 371 / 102(e) Dates: |
1993-02-22 / 1993-02-22
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| Forward References: |
Show 21 U.S. patent(s) that reference this one
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