US3667460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilation system for inflatable pressure garments
Assignee: Ilc Industries Inc
•
Filing: 1967-05-08
•
Granted: 1972-06-06
•
Expires: 1987-05-08
Abstract
Abstract An improved ventilation system for a space suit or other inflatable pressure garment assembly, such as used by astronauts and by pilots of high altitude vehicles operating in an environment having low oxygen content and low atmospheric pressures in which the life support gas enters at the helmet and through ducts at the extremities of the arms and exits from the garment only through ducts located at the legs after passing over the entire body of the wearer.
Inventors
- 👤 Leonard F Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:00
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/04
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
235 words
A ventilating system for distributing life-support gas to and removing exhaust gas from an inflatable pressure garment assembly wherein: 1. said assembly has helmet, arm, leg and torso sections; 2. life-support gas intake and exhaust connectors are positioned in said torso section for respectively conveying said lifesupport gas to and said gas as exhaust from said assembly; 3. a pair of helmet intake ducts are operatively connected between said intake connector and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide; 4. a pair of arm intake ducts are operatively connected between said intake connector and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and 5. a pair of leg exhaust ducts are operatively connected between said exhaust connectors and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby 6. lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust ducts, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 2
Dependent Claim
235 words
A ventilating system for distributing life-support gas to and removing exhaust gas from an inflatable pressure garment assembly wherein: 1. said assembly has helmet, arm, leg and torso sections; 2. life-support gas intake and exhaust connectors are positioned in said torso section for respectively conveying said lifesupport gas to and said gas as exhaust from said assembly; 3. a pair of helmet intake ducts are operatively connected between said intake connector and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide; 4. a pair of arm intake ducts are operatively connected between said intake connector and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and 5. a pair of leg exhaust ducts are operatively connected between said exhaust connectors and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby 6. lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust ducts, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 3
Dependent Claim
27 words
life-support gas intake and exhaust connectors are positioned in said torso section for respectively conveying said life-support gas to and said gas as exhaust from said assembly;
Claim 4
Dependent Claim
27 words
life-support gas intake and exhaust connectors are positioned in said torso section for respectively conveying said life-support gas to and said gas as exhaust from said assembly;
Claim 5
Dependent Claim
49 words
The ventilating system of claim 1 in which said life-support gas intake connector has a pair of torso intake ducts operatively connected thereto, said torso intake ducts positioned in the area of the user''s torso for diffusing at least a portion of said life-supporting Gas against the user''s torso.
Claim 6
Dependent Claim
22 words
said exhaust connector is adjustable so that either of said exhaust ducts may be used to remove exhaust gas from said assembly.
Claim 7
Dependent Claim
22 words
said exhaust connector is adjustable so that either of said exhaust ducts may be used to remove exhaust gas from said assembly.
Claim 8
Dependent Claim
28 words
life-support gas intake and exhaust connector means are positioned in said torso section for respectively conveying said life-support gas to and said gas as exhaust from said assembly;
Claim 9
Dependent Claim
28 words
life-support gas intake and exhaust connector means are positioned in said torso section for respectively conveying said life-support gas to and said gas as exhaust from said assembly;
Claim 10
Dependent Claim
40 words
helmet intake duct means is operatively connected between said intake connector means and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide;
Claim 11
Dependent Claim
40 words
helmet intake duct means is operatively connected between said intake connector means and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide;
Claim 12
Dependent Claim
68 words
The ventilation system of claim 1 in which said intake connector is adjustable so that either one or both of said helmet and arm intake ducts may be used to distribute life-support gas to said assembly so that a variable quantity of life-support gas may be conveyed to said helmet section and the remaining quantity of life-support gas may be conveyed to the extremities of said arm sections.
Claim 13
Dependent Claim
41 words
a pair of helmet intake ducts are operatively connected between said intake connector and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide;
Claim 14
Dependent Claim
41 words
a pair of helmet intake ducts are operatively connected between said intake connector and said helmet section for distributing at least a portion of said life-support gas into said helmet section so as to purge said helmet section of carbon dioxide;
Claim 15
Dependent Claim
37 words
a pair of arm intake ducts are operatively connected between said intake connector and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and
Claim 16
Dependent Claim
37 words
a pair of arm intake ducts are operatively connected between said intake connector and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and
Claim 17
Dependent Claim
8 words
The ventilation system of claim 1 in which:
Claim 18
Dependent Claim
39 words
a pair of arm intake duct means are operatively connected between said intake connector means and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and
Claim 19
Dependent Claim
39 words
a pair of arm intake duct means are operatively connected between said intake connector means and the lower portions of the arm sections for conveying at least a portion of said life-support gas into said lower arm sections; and
Claim 20
Dependent Claim
32 words
a pair of leg exhaust duct means are operatively connected between said exhaust connector means and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby
Claim 21
Dependent Claim
32 words
a pair of leg exhaust duct means are operatively connected between said exhaust connector means and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby
Claim 22
Dependent Claim
19 words
A ventilating system for distributing life-support gas to and removing exhaust gas from an inflatable pressure garment assembly wherein:
Claim 23
Dependent Claim
19 words
A ventilating system for distributing life-support gas to and removing exhaust gas from an inflatable pressure garment assembly wherein:
Claim 24
Dependent Claim
30 words
a pair of leg exhaust ducts are operatively connected between said exhaust connectors and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby
Claim 25
Dependent Claim
30 words
a pair of leg exhaust ducts are operatively connected between said exhaust connectors and said leg sections, for conveying gas as exhaust from the assembly to said exhaust connector; whereby
Claim 26
Dependent Claim
66 words
lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust ducts, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 27
Dependent Claim
66 words
lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust ducts, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 28
Dependent Claim
67 words
lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust duct means, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 29
Dependent Claim
67 words
lower pressure in the leg sections of the said assembly than the pressure value of the input life-support gas causes said gas to flow through said helmet and arm sections to said torso section and then to proportionally flow through said leg sections to said leg exhaust duct means, thus providing increased contact of said life-support gas with the user''s body for moisture evaporation and body cooling.
Claim 30
Dependent Claim
110 words
The ventilation system of claim 5 in which said helmet intake duct means includes at least one helmet intake duct having one end connected to said gas intake connector means and its other end connected to a helmet diffuser connected to the rear area of said helmet section, said at least one helmet intake duct conveying at least a portion of said life-support gas from said intake connector means to said diffuser, and said diffuser diffusing said intake gas against the user''s head and against the front area of said helmet section so as to purge said helmet section of carbon dioxide and defog said to be front section thereof.
Claim 31
Dependent Claim
58 words
The ventilation system of claim 5 in which said intake duct means includes a helmet diffuser connected to the rear area of said helmet section for diffusing said life-support gas against the user''s head and against the front area of said helmet section so as to purge said helmet section of carbon dioxide and defog said front area.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |