US4941467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidification face mask
Assignee: Individual
•
Filing: 1989-03-16
•
Granted: 1990-07-17
•
Expires: 2009-03-16
Abstract
Abstract A humidification face mask comprises an inner mask member and an outer mask member which are bonded together in a sealed manner along the lower and side edges to define therebetween a concavity for receiving therein a moisturizing pad. The inner and outer mask members are formed respectively with a number of breathing perforations permitting a wearer of the face mask to inhale and exhale therethrough. The moisturizing pad is retained between the outer and inner mask members at the portions having the breathing perforations and is adapted to carry a volume of water which adds moisture to air to be inhaled. The sealed bonding of the innner and outer mask members not only prevents accidental leakage of water out of the face mask, but also serves to positively hold a large volume of water for ensuring a continued moisturizing effect over a prolonged period of time.
Inventors
- 👤 Danzaburo Takata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0683; A61M16/10; A61M16/14; A61M16/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
199 words
A humidification face mask comprising: an inner mask member and an outer mask member each shaped into a curved configuration for fitting over the nose and mouth of a wearer, said inner and outer mask members provided respectively with a number of breathing perforations permitting the breathing of the wearer therethrough and being bonded together in a sealed manner along side and lower edges of said inner and outer mask members so as to leave therebetween a top opening; an air permeable and water absorbent moisturizing pad having a first portion and a second portion inserted through said top opening and held between the inner and outer mask members, said moisturizing pad carrying a volume of water which moisturizes the air inhaled through said breathing perforations by the wearer, said inner and outer mask members forming a shallow concavity and a deep concavity therebetween, said first portion and said second portion of said moisturizing pad being accommodated within said shallow concavity and said deep concavity, respectively, and said second portion supports a large volume of water for supplying water to said first portion by capillary action; and means for supporting the face mask on the head of the wearer.
Claim 2
Dependent Claim
199 words
A humidification face mask comprising: an inner mask member and an outer mask member each shaped into a curved configuration for fitting over the nose and mouth of a wearer, said inner and outer mask members provided respectively with a number of breathing perforations permitting the breathing of the wearer therethrough and being bonded together in a sealed manner along side and lower edges of said inner and outer mask members so as to leave therebetween a top opening; an air permeable and water absorbent moisturizing pad having a first portion and a second portion inserted through said top opening and held between the inner and outer mask members, said moisturizing pad carrying a volume of water which moisturizes the air inhaled through said breathing perforations by the wearer, said inner and outer mask members forming a shallow concavity and a deep concavity therebetween, said first portion and said second portion of said moisturizing pad being accommodated within said shallow concavity and said deep concavity, respectively, and said second portion supports a large volume of water for supplying water to said first portion by capillary action; and means for supporting the face mask on the head of the wearer.
Claim 3
Dependent Claim
53 words
A humidification face mask as set forth in claim 1, wherein said inner mask member is provided on a surface facing the mouth of the wearer with a top-opened pocket for receiving therein a water absorbent recovery pad for accumulating droplets of water dripping down on said surface of the inner mask member.
Claim 4
Dependent Claim
41 words
A humidification face mask as set forth in claim 1, wherein said outer mask member is provided with a plurality of tiny sharp-pointed projections which engage into said moisturizing pad for retaining the same between the inner and outer mask members.
Claim 5
Dependent Claim
45 words
A humidification face mask as set forth in claim 1, wherein said shallow concavity and said deep concavity are formed by said inner mask member being bulged to define inside thereof said concavities for receiving said moisturizing pad between the inner and outer mask members.
Claim 6
Dependent Claim
52 words
A humidification face mask as set forth in claim 4, wherein said shallow concavity positioned at the upper portion of the inner mask member having said perforations, and said deep concavity positioned at the lower portion of said inner mask member the lower portion of said inner mask members having no perforations.
Claim 7
Dependent Claim
46 words
A humidification face mask as set forth in claim 1, further including an outer mask cover detachable to the outer mask member, said outer mask cover having a number of breathing holes in direct open communication with said perforations of the outer and inner mask members.
Claim 8
Dependent Claim
43 words
A humidification face mask as set forth in claim 1, wherein said inner and outer mask members receive therebetween a moisturizing pad having medication supported thereon for respiratory disease such as asthma or pneumonia to be inhaled with or without the moisturized air.
References Cited (Backward Citations)
US302949A
Cited
US612295A
Cited
US718470A
Cited
AT73320B
Cited
GB191324150A
Cited
FR546686A
Cited
US2435721A
Cited
US3042034A
Cited
GB1183262A
Cited
US3814094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |