US4062357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator mask
Assignee: Individual
•
Filing: 1976-03-25
•
Granted: 1977-12-13
•
Expires: 1996-03-25
Abstract
Abstract This invention relates to a disposable respirator mask. The present mask includes a hollow contact rim formed from a plastics blow-moulding which is filled with compressed air. Further, the mask is also foldable for storage purposes.
Inventors
- 👤 Asmund Sigurd Laerdal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:41
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0683
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A respirator mask which comprises: a yieldably resilient deformable circumferential rim formed of a plastics material for contacting the face of a person; and a central portion peripherally attached to said rim and including an air inlet tube, said central portion having a single-walled structure made from a deformable plastics material and being dome-shaped and including at least one substantially annular area of locally reduced thickness surrounding the air inlet tube adjacent thereto having sufficient flexibility for facilitating bulging in of the central portion the interior area bound by into said rim whereby the central portion is maintained in said area.
Claim 2
Dependent Claim
101 words
A respirator mask which comprises: a yieldably resilient deformable circumferential rim formed of a plastics material for contacting the face of a person; and a central portion peripherally attached to said rim and including an air inlet tube, said central portion having a single-walled structure made from a deformable plastics material and being dome-shaped and including at least one substantially annular area of locally reduced thickness surrounding the air inlet tube adjacent thereto having sufficient flexibility for facilitating bulging in of the central portion the interior area bound by into said rim whereby the central portion is maintained in said area.
Claim 3
Dependent Claim
49 words
The respirator mask as defined in claim 1 and including clamping member means disposed on said central portion for receiving clamping cords for securing said mask to the head of a person, each clamping member means defining a channel between two walls for receiving and elastically clamping said cords.
Claim 4
Dependent Claim
41 words
The respirator mask as defined in claim 2 wherein the exterior portion of said mask is provided with T-shaped members with elastically deformable flaps clamping cords associated with said clamping member for securing said mask to the head of a person.
Claim 5
Dependent Claim
26 words
The respirator mask as defined in claim 1 wherein said central portion is provided with a terminal rib means for detachable mounting of said hollow rim.
Claim 6
Dependent Claim
35 words
The respirator mask as defined by claim 4 wherein said rim is formed with groove means and said central portion is formed with terminal rib means which detailably engage said groove means of said rim.
Claim 7
Dependent Claim
31 words
A respirator mask according to claim 1 wherein said central portion additionally includes an annular area of reduced thickness about the periphery of the central portion and adjacent the deformable rim.
Claim 8
Dependent Claim
25 words
A respirator mask according to claim 1 wherein said deformable rim is hollow, is filled with a gas and is permanently sealed from the atmosphere.
Claim 9
Dependent Claim
20 words
A respirator mask according to claim 7 wherein said air inlet tube extends beyond said rim in the bulged-in state.
Claim 10
Dependent Claim
15 words
The respirator mask as defined in claim 7 wherein said hollow rim is blow molded.
References Cited (Backward Citations)
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Cited
GB599050A
Cited
US2540567A
Cited
US2995131A
Cited
US3013556A
Cited
US3330274A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |