Patent US922638A successfully refreshed from Google Patents.
Patent US637910A successfully refreshed from Google Patents.
Patent US4062359A successfully refreshed from Google Patents.
US4062359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature breathing apparatus
Assignee: Individual
•
Filing: 1976-08-09
•
Granted: 1977-12-13
•
Expires: 1996-08-09
Abstract
Abstract A breathing apparatus for use by mountain climbers and others operating in low temperature atmospheres utilizes body heat and perspiration to warm and humidify the air from the atmosphere as it is inspired by the user. A hose-like element is positioned adjacent to the body and inside the clothing. The element is of a porous construction to permit passage of air and equipped with auxiliary holes for the same purpose. An inlet valve connects to the outer atmosphere and a filter and a connector lead to a face mask positioned against the nose and mouth of the user. An outlet check valve completes the apparatus.
Inventors
- 👤 Mark E. Geaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:14
CPC Classifications
A; A62; A62B; A62B18/00; A61; A61M; A61M16/00; A61M16/10; A61M16/1075; A61M16/1095; A61M16/105; A61M16/106; A61M16/107; A61M2205/00; A61M2205/36; A61M2205/3613
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
A breathing apparatus for inhalation of low temperature air by a person comprising: a tubular member having perforations linearly disposed therein and adapted for contact against said person's body inside his outer garments and having a first end and a second end; a face mask disposed for positioning against the nose and mouth of the user; a hollow tube positioned on said face mask and connecting the interior of said mask with said first end of said tubular member; a support member positioned on said face mask and connecting with said second end of said tubular member; valve means disposed to admit air from outside said outer garments to the interior of said tubular member; valve means to permit passage of air from the interior of said mask to the exterior only.
Claim 2
Dependent Claim
132 words
A breathing apparatus for inhalation of low temperature air by a person comprising: a tubular member having perforations linearly disposed therein and adapted for contact against said person's body inside his outer garments and having a first end and a second end; a face mask disposed for positioning against the nose and mouth of the user; a hollow tube positioned on said face mask and connecting the interior of said mask with said first end of said tubular member; a support member positioned on said face mask and connecting with said second end of said tubular member; valve means disposed to admit air from outside said outer garments to the interior of said tubular member; valve means to permit passage of air from the interior of said mask to the exterior only.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 including filter means inserted between said first end of said tubular member and said hollow tube.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 including spring means cooperating with said tubular member and disposed to impart a semi-rigid quality to said member.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1 including holes through said tubular member positioned at spaced intervals along its length and disposed to increase the flow of air through said apparatus.
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) | 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 |