US3777750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective clothing unit for conducting work in a deleterious atmosphere
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1971-07-21
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Granted: 1973-12-11
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Expires: 1991-07-21
Abstract
Abstract A protective clothing unit for work conducted in a tritiated atmosphere comprising a frogsuit made at least partly of substantially leak-tight flexible fabric, an ejector for removing vitiated air to the exterior of the frogsuit and a single airsupply pipe through which the flow is directed parly into the frogsuit for supplying fresh air and partly to the ejector from which the flow is discharged to the exterior and carries with it the vitiated air.
Inventors
- 👤 J Savornin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:40
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/006; G; G21; G21F; G21F3/00; G21F3/02; G21F3/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A protective clothing unit for use in contaminated atmosphere, comprising a frogsuit made at least partly of substantially impervious flexible fabric, an ejector having a suction inlet connected to the interior of the frogsuit, an airsupply pipe, means for directing part of the air flow from said pipe into the frogsuit for respiratory purposes and part of said flow to the ejector from which it is discharged to the exterior of the atmosphere and carries with it vitiated air from said frogsuit, a rose for the collection of vitiated air placed within the frogsuit and connected to the suction inlet of the ejector by a leak-tight passage through the frogsuit wall, a check valve between the ejector and the rose, said valve closing automatically in the event of interruption of the air supply to the ejector.
Claim 2
Dependent Claim
136 words
A protective clothing unit for use in contaminated atmosphere, comprising a frogsuit made at least partly of substantially impervious flexible fabric, an ejector having a suction inlet connected to the interior of the frogsuit, an airsupply pipe, means for directing part of the air flow from said pipe into the frogsuit for respiratory purposes and part of said flow to the ejector from which it is discharged to the exterior of the atmosphere and carries with it vitiated air from said frogsuit, a rose for the collection of vitiated air placed within the frogsuit and connected to the suction inlet of the ejector by a leak-tight passage through the frogsuit wall, a check valve between the ejector and the rose, said valve closing automatically in the event of interruption of the air supply to the ejector.
Claim 3
Dependent Claim
141 words
A protective clothing unit for use in contaminated atmosphere, comprising a frogsuit made at least partly of substantially impervious flexible fabric, an ejector having a suction inlet connected to the interior of the frogsuit, an air-supply pipe, means for directing part of the air flow from said pipe into the frogsuit for respiratory purposes and part of said flow to the ejector from which it is discharged to the exterior of the atmosphere and carries with it vitiated air from said frogsuit, said means for directing including a Y-piece union having an inlet connected to the single air supply, one outlet branch connected to means for distributing air in the frogsuit, a second outlet branch connected to the air-removing ejector, the ejector being provided with a non-return check valve which closes automatically in the event of interruption of the air supply.
Claim 4
Dependent Claim
141 words
A protective clothing unit for use in contaminated atmosphere, comprising a frogsuit made at least partly of substantially impervious flexible fabric, an ejector having a suction inlet connected to the interior of the frogsuit, an air-supply pipe, means for directing part of the air flow from said pipe into the frogsuit for respiratory purposes and part of said flow to the ejector from which it is discharged to the exterior of the atmosphere and carries with it vitiated air from said frogsuit, said means for directing including a Y-piece union having an inlet connected to the single air supply, one outlet branch connected to means for distributing air in the frogsuit, a second outlet branch connected to the air-removing ejector, the ejector being provided with a non-return check valve which closes automatically in the event of interruption of the air supply.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |