US3339545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respiratory apparatus
Assignee: Individual
•
Filing: 1964-03-16
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Granted: 1967-09-05
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Burchell Geoffrey Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:05
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0057; A61M16/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A RESPIRATORY APPARATUS COMPRISING A CONTAINER, AN EXHALATION DUCT CONNECTED TO SAID CONTAINER FOR COMMUNICATING SAID CONTAINER WITH A PATIENT''S LUNGS, WALL MEANS OF SAID CONTAINER MOVABLE TO CONTACT THE INTERIOR OF SAID CONTAINER AND TO EXPAND SAID INTERIOR TO DRAW EXHALATION GAS THROUGH SAID EXHALATION DUCT, DRIVING MEANS FOR MOVING SAID WALL MEANS TO EXPAND AND CONTACT SAID INTERIOR, CONDUIT MEANS LEADING FROM SAID INTERIOR TO A LOCATION AT WHICH THERE IS SUBSTANTIALLY ATMOSPHERIC PRESSURE, VALVE MEANS SERVING TO CONTROL THE FLOW OF GAS THROUGH SAID CONDUIT MEANS, MEANS FOR USE IN PRODUCING POSITIVE PRESSURE IN SAID LUNGS, ACTUATING MEANS CO-OPERATING WITH SAID VALVE MEANS FOR OPENING SAID VALVE MEANS DURING EACH BREATHING CYCLE WHEN THERE IS, IN SAID LUNGS, APPROXIMATELY MAXIMUM POSITIVE PRESSURE WHICH IS GREATER THAN THE PRESURE AT SAID LOCATION, THEREBY TO CONNECT SAID LUNGS TO SAID LOCATION BY WAY OF SAID EXHALATION DUCT AND SAID INTERIOR, AND FOR MAINTAINING SAID VALVE MEANS OPEN, THEREBY TO CAUSE THE PRESSURE IN SAID CONTAINER TO DROP SHARPLY TO APPROXIMATELY THE PRESSURE AT SAID LOCATION, AND ADJUSTABLE, PNEUMATIC CONTROL MEANS FOR ADJUSTABLY CONTROLLING THE TIME INTERVAL OVER WHICH SAID VALVE MEANS IS OPEN.
Claim 2
Dependent Claim
194 words
A RESPIRATORY APPARATUS COMPRISING A CONTAINER, AN EXHALATION DUCT CONNECTED TO SAID CONTAINER FOR COMMUNICATING SAID CONTAINER WITH A PATIENT''S LUNGS, WALL MEANS OF SAID CONTAINER MOVABLE TO CONTACT THE INTERIOR OF SAID CONTAINER AND TO EXPAND SAID INTERIOR TO DRAW EXHALATION GAS THROUGH SAID EXHALATION DUCT, DRIVING MEANS FOR MOVING SAID WALL MEANS TO EXPAND AND CONTACT SAID INTERIOR, CONDUIT MEANS LEADING FROM SAID INTERIOR TO A LOCATION AT WHICH THERE IS SUBSTANTIALLY ATMOSPHERIC PRESSURE, VALVE MEANS SERVING TO CONTROL THE FLOW OF GAS THROUGH SAID CONDUIT MEANS, MEANS FOR USE IN PRODUCING POSITIVE PRESSURE IN SAID LUNGS, ACTUATING MEANS CO-OPERATING WITH SAID VALVE MEANS FOR OPENING SAID VALVE MEANS DURING EACH BREATHING CYCLE WHEN THERE IS, IN SAID LUNGS, APPROXIMATELY MAXIMUM POSITIVE PRESSURE WHICH IS GREATER THAN THE PRESURE AT SAID LOCATION, THEREBY TO CONNECT SAID LUNGS TO SAID LOCATION BY WAY OF SAID EXHALATION DUCT AND SAID INTERIOR, AND FOR MAINTAINING SAID VALVE MEANS OPEN, THEREBY TO CAUSE THE PRESSURE IN SAID CONTAINER TO DROP SHARPLY TO APPROXIMATELY THE PRESSURE AT SAID LOCATION, AND ADJUSTABLE, PNEUMATIC CONTROL MEANS FOR ADJUSTABLY CONTROLLING THE TIME INTERVAL OVER WHICH SAID VALVE MEANS IS OPEN.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |