US3191596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator
Assignee: Individual
•
Filing: 1960-09-19
•
Granted: 1965-06-29
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Forrest M Bird
- 👤 Henry L Pohndorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:41
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0012; A61M16/10; A61M16/105; A61M16/106; A61M16/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
IN A RESPIRATORY APPARATUS HAVING AN INHALATION PHASE AND AN EXHALATION PHASE IN ITS OPERATIVE CYCLE, A CONTROLLER HAVING AN INLET ADAPTED TO BE CONNECTED TO A SOURCE OF GAS UNDER PRESSURE, SAID CONTROLLER HAVING AN OUTLET ADAPTED TO BE CONNECTED TO THE AIRWAY OF THE PATIENT, A MAIN CONTROL VALVE IN THE CONTROLLER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL THE FLOW OF GAS FROM THE INLET TO THE OUTLET, MEANS FOR OPERATING SAID MAIN CONTROL VALVE SO THAT THE MAIN CONTROL VALVE IS IN AN OPEN POSITION DURING THE INHALATION PHASE AND IN A CLOSED POSITION DURING THE EXHALATION PHASE OF THE RESPIRATORY APPARATUS, SAID MEANS INCLUDING MEANS FOR SENSING WHEN A PREDETERMINED PRESSURE IN REACHED IN THE OUTLET FOR SHIFTING SAID MAIN CONTROL VALVE FROM AN OPEN POSITION TO A CLOSED POSITION, A FLUID SOURCE, VALVE MEANS CONNECTED TO THE OUTLET FOR SENSING WHEN THE PREDETERMINED PRESSURE IS NOT REACHED IN THE OUTLET IN A PREDETERMINED TIME, AND ADDITIONAL VALVE MEANS CONTROLLED BY SAID FIRST NAMED VALVE MEANS FOR INTRODUCING ADDITIONAL GAS INTO THE OUTLET TO CAUSE THE PRESSURE IN SAID OUTLET TO REACH THE PREDETERMINED PRESSURE, SAID FIRST NAMED VALVE MEANS CONTROLLING THE APPLICATION OF FLUID FROM SAID FLUID SOURCE TO SAID ADDITIONAL VALVE MEANS TO CAUSE OPERATION OF SAID ADDITIONAL VALVE MEANS.
Claim 2
Dependent Claim
218 words
IN A RESPIRATORY APPARATUS HAVING AN INHALATION PHASE AND AN EXHALATION PHASE IN ITS OPERATIVE CYCLE, A CONTROLLER HAVING AN INLET ADAPTED TO BE CONNECTED TO A SOURCE OF GAS UNDER PRESSURE, SAID CONTROLLER HAVING AN OUTLET ADAPTED TO BE CONNECTED TO THE AIRWAY OF THE PATIENT, A MAIN CONTROL VALVE IN THE CONTROLLER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL THE FLOW OF GAS FROM THE INLET TO THE OUTLET, MEANS FOR OPERATING SAID MAIN CONTROL VALVE SO THAT THE MAIN CONTROL VALVE IS IN AN OPEN POSITION DURING THE INHALATION PHASE AND IN A CLOSED POSITION DURING THE EXHALATION PHASE OF THE RESPIRATORY APPARATUS, SAID MEANS INCLUDING MEANS FOR SENSING WHEN A PREDETERMINED PRESSURE IN REACHED IN THE OUTLET FOR SHIFTING SAID MAIN CONTROL VALVE FROM AN OPEN POSITION TO A CLOSED POSITION, A FLUID SOURCE, VALVE MEANS CONNECTED TO THE OUTLET FOR SENSING WHEN THE PREDETERMINED PRESSURE IS NOT REACHED IN THE OUTLET IN A PREDETERMINED TIME, AND ADDITIONAL VALVE MEANS CONTROLLED BY SAID FIRST NAMED VALVE MEANS FOR INTRODUCING ADDITIONAL GAS INTO THE OUTLET TO CAUSE THE PRESSURE IN SAID OUTLET TO REACH THE PREDETERMINED PRESSURE, SAID FIRST NAMED VALVE MEANS CONTROLLING THE APPLICATION OF FLUID FROM SAID FLUID SOURCE TO SAID ADDITIONAL VALVE MEANS TO CAUSE OPERATION OF SAID ADDITIONAL VALVE MEANS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |