US3982532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing mask, particularly for artificial respiration
Assignee: Gnosjoplast AB
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Filing: 1974-12-17
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Granted: 1976-09-28
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Expires: 1994-12-17
Abstract
Abstract Breathing mask of double-wall construction having a relatively rigid outer wall and an inner wall with deformable sealing pads to be pressed against either side of the nose and the adjoining portions of the cheeks and with a rigid arc-shaped portion to be pressed against the chin.
Inventors
- 👤 Matts Arne Bernhard Halldin
- 👤 Nils Rune Gustaf Andreasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:20
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
201 words
An integral breathing mask, particularly for artificial respiration, comprising an inner and outer wall of resilient material, the circumferential edges of said walls being connected to define a cup-shaped face mask having a variable volume internal air space therebetween and generally designed to surround the nose and mouth of the patient in a sealing manner, said outer wall being provided with a continuously open vent for venting the internal air space between the inner and outer resilient walls to the atmosphere, said inner and outer walls being connected at a point removed from the circumferential edges thereof to provide a tubular passage for admitting a breathing gas to the inside of the mask, said resilient outer wall being provided with a circumferential wall portion extending substantially perpendicular to the surface of the patient's face, and deformable resilient sealing pads formed on the inside of the inner wall for pressing against the sides of the nose and adjoining cheek portions of the patient, said inner wall having a rigid arcuate portion adjacent its circumference for pressing against the chin area of the patient, and said outer wall having opposed reinforced portions adjacent the circumferential wall portion for gripping and handling the mask.
Claim 2
Dependent Claim
201 words
An integral breathing mask, particularly for artificial respiration, comprising an inner and outer wall of resilient material, the circumferential edges of said walls being connected to define a cup-shaped face mask having a variable volume internal air space therebetween and generally designed to surround the nose and mouth of the patient in a sealing manner, said outer wall being provided with a continuously open vent for venting the internal air space between the inner and outer resilient walls to the atmosphere, said inner and outer walls being connected at a point removed from the circumferential edges thereof to provide a tubular passage for admitting a breathing gas to the inside of the mask, said resilient outer wall being provided with a circumferential wall portion extending substantially perpendicular to the surface of the patient's face, and deformable resilient sealing pads formed on the inside of the inner wall for pressing against the sides of the nose and adjoining cheek portions of the patient, said inner wall having a rigid arcuate portion adjacent its circumference for pressing against the chin area of the patient, and said outer wall having opposed reinforced portions adjacent the circumferential wall portion for gripping and handling the mask.
Claim 3
Dependent Claim
28 words
A breathing mask as claimed in claim 1 wherein said tubular passage includes inner and outer abutment surfaces for resiliently engaging a conduit for admitting a breathing gas.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |