US3200818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing apparatus
Assignee: Svenska AB Gasaccumulator
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Filing: 1962-11-05
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Granted: 1965-08-17
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Johannisson Dag Olof Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:20
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A BREATHING APPARATUS COMPRISING: AN EXHALATION TUBE FOR CONDUCTING EXHALED GAS FROM A POINT OF USE, AN INHALATION TUBE FOR CONDUCTING GAS TO BE INHALED TO THE POINT OF USE, SAID EXHALATION TUBE AND SAID INHALATION TUBE BEING CONNECTED TO FORM A CLOSED CIRCUIT LEADING FROM AND RETURNING TO THE POINT OF USE MEANS IN SAID CIRCUIT COMMUNICATING WITH SAID INHALATION AND EXHALATION TUBES FOR PERMITTING ONE-WAY FLOW ONLY FROM THE INHALATION TUBE TO THE POINT OF USE AND FROM THE POINT OF USE TO THE EXHALATION TUBE, A BREATHING BAG CONNECTED IN SAID CIRCUIT, A SUPPLY TUBE CONNECTED TO SAID CIRCUIT FOR SUPPLYING A BREATHING GAS THERETO AT A POINT RELATIVELY UPSTREAM OF SAID BREATHING BAG, A NON-RETURN VALVE IN SAID CIRCUIT BETWEEN SAID BREATHING BAG AND SAID SUPPLY TUBE OPENING TOWARD THE BREATHING BAG AND AN OVERFLOW VALVE COMMUNICATING WITH SAID SUPPLY TUBE UPSTREAM OF SAID NONRETURN VALVE FOR DISCHARGING EXCESS GAS.
Claim 2
Dependent Claim
154 words
A BREATHING APPARATUS COMPRISING: AN EXHALATION TUBE FOR CONDUCTING EXHALED GAS FROM A POINT OF USE, AN INHALATION TUBE FOR CONDUCTING GAS TO BE INHALED TO THE POINT OF USE, SAID EXHALATION TUBE AND SAID INHALATION TUBE BEING CONNECTED TO FORM A CLOSED CIRCUIT LEADING FROM AND RETURNING TO THE POINT OF USE MEANS IN SAID CIRCUIT COMMUNICATING WITH SAID INHALATION AND EXHALATION TUBES FOR PERMITTING ONE-WAY FLOW ONLY FROM THE INHALATION TUBE TO THE POINT OF USE AND FROM THE POINT OF USE TO THE EXHALATION TUBE, A BREATHING BAG CONNECTED IN SAID CIRCUIT, A SUPPLY TUBE CONNECTED TO SAID CIRCUIT FOR SUPPLYING A BREATHING GAS THERETO AT A POINT RELATIVELY UPSTREAM OF SAID BREATHING BAG, A NON-RETURN VALVE IN SAID CIRCUIT BETWEEN SAID BREATHING BAG AND SAID SUPPLY TUBE OPENING TOWARD THE BREATHING BAG AND AN OVERFLOW VALVE COMMUNICATING WITH SAID SUPPLY TUBE UPSTREAM OF SAID NONRETURN VALVE FOR DISCHARGING EXCESS GAS.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |