US3559642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective suit
Assignee: Automatic Sprinkler Corp
•
Filing: 1968-03-01
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Granted: 1971-02-02
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Expires: 1988-03-01
Abstract
Abstract A life supporting protective suit having inner and outer walls and an intervening layer of porous material forming an isolation chamber between the walls. The isolation chamber is connected to an exhaust system discharging externally of the ambient atmosphere.
Inventors
- 👤 Charles D Cupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:22
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/002; A41D13/0025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A life supporting system comprising a protective suit adapted to cover the body of a user, said suit comprising an inner wall and an outer impervious wall, both walls adapted to cover a substantial portion of the body of the user, spacing means forming an isolating chamber between said walls, exhaust means including a conduit means discharging externally of the ambient atmosphere, and means placing said chamber in communication with said exhaust means for evacuating said chamber, thereby to avoid contamination of the ambient atmosphere.
Claim 2
Dependent Claim
85 words
A life supporting system comprising a protective suit adapted to cover the body of a user, said suit comprising an inner wall and an outer impervious wall, both walls adapted to cover a substantial portion of the body of the user, spacing means forming an isolating chamber between said walls, exhaust means including a conduit means discharging externally of the ambient atmosphere, and means placing said chamber in communication with said exhaust means for evacuating said chamber, thereby to avoid contamination of the ambient atmosphere.
Claim 3
Dependent Claim
20 words
A life supporting system as set forth in claim 1, wherein said suit fully encloses the body of the user.
Claim 4
Dependent Claim
30 words
A life supporting system as set forth in claim 1, wherein said inner and outer walls are flexible, and said spacing means comprises an intervening flexible layer of porous material.
Claim 5
Dependent Claim
40 words
A life supporting system as set forth in claim 1, which includes means for maintaining the interior atmosphere of said suit at a slightly positive pressure relative to the ambient atmosphere within which said suit is intended to be used.
Claim 6
Dependent Claim
52 words
A life supporting system as set forth in claim 1, together with inhalation means for supplying breathing fluid to a user of said protective covering, and exhalation means for receiving the products of respiration of such user said exhalation means communicating with said exhaust means to carry off the products of respiration.
Claim 7
Dependent Claim
29 words
A life supporting system as set forth in claim 1, wherein said last-named means include a pressure regulating valve for establishing a predetermined negative pressure in said isolating chamber.
Claim 8
Dependent Claim
17 words
A life supporting system as set forth in claim 1, wherein said spacing means comprise a fabric.
Claim 9
Dependent Claim
20 words
A life supporting system as set forth in claim 1, wherein said spacing means comprise an open cell sponge material.
Claim 10
Dependent Claim
35 words
A life supporting system as set forth in claim 1, wherein said inner wall is pervious to the passage of gas, together with means for supplying a ventilating gas to the interior of said suit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |