Patent US3073298A successfully refreshed from Google Patents.
US3073298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respiratory device
Assignee: Individual
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Filing: 1959-03-12
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Granted: 1963-01-15
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Philip L Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
RESPIRATORY APPARATUS COMPRISING: A BODY HAVING A GAS CHAMBER AND PASSAGEWAYS COMMUNICATING WITH SAID GAS CHAMBER FOR ADMITTING GAS THERETO AND FOR ESTABLISHING A GAS FLOW CIRCUIT BETWEEN SAID CHAMBER AND THE LUNGS OF A PATIENT; VENTURI MEANS OPERABLE FOR DEVELOPING NEGATIVE PRESSURE IN SAID CHAMBER, GAS-OPERATED MEANS FOR CONTROLLING THE FLOW OF GAS THROUGH SAID CHAMBER; SAID GAS-OPERATED MEANS INCLUDING A CYLINDER COMMUNICATING WITH SAID CHAMBER AT ONE END AND WITH ATMOSPHERE AT THE OTHER END; AND A PLASTIC PISTON RECIPROCABLE IN SAID CYLINDER INCIDENT TO ABOVE ATMOSPHERIC AND SUB-ATMOSPHERIC GAS PRESSURES IN SAID CHAMBER, SAID PLASTIC PISTON BEING MADE OF A PLASTIC WHICH HAS A FINE, SMOOTH TEXTURE WITH SELFLUBRICATING CHARACTERISTICS, SAID GAS-OPERATED MEANS INCLUDING VALVE MEANS FOR ALTERNATELY DIRECTING GAS THROUGH SAID PASSAGEWAYS TO SAID CHAMBER AND TO SAID VENTURI MEANS, AND MEANS CONNECTED WITH SAID PISTON AND SAID VALVE MEANS FOR SO ACTUATING SAID VALVE MEANS RESPONSIVE TO SAID RECIPROCATION OF SAID PISTON.
Claim 2
Dependent Claim
157 words
RESPIRATORY APPARATUS COMPRISING: A BODY HAVING A GAS CHAMBER AND PASSAGEWAYS COMMUNICATING WITH SAID GAS CHAMBER FOR ADMITTING GAS THERETO AND FOR ESTABLISHING A GAS FLOW CIRCUIT BETWEEN SAID CHAMBER AND THE LUNGS OF A PATIENT; VENTURI MEANS OPERABLE FOR DEVELOPING NEGATIVE PRESSURE IN SAID CHAMBER, GAS-OPERATED MEANS FOR CONTROLLING THE FLOW OF GAS THROUGH SAID CHAMBER; SAID GAS-OPERATED MEANS INCLUDING A CYLINDER COMMUNICATING WITH SAID CHAMBER AT ONE END AND WITH ATMOSPHERE AT THE OTHER END; AND A PLASTIC PISTON RECIPROCABLE IN SAID CYLINDER INCIDENT TO ABOVE ATMOSPHERIC AND SUB-ATMOSPHERIC GAS PRESSURES IN SAID CHAMBER, SAID PLASTIC PISTON BEING MADE OF A PLASTIC WHICH HAS A FINE, SMOOTH TEXTURE WITH SELFLUBRICATING CHARACTERISTICS, SAID GAS-OPERATED MEANS INCLUDING VALVE MEANS FOR ALTERNATELY DIRECTING GAS THROUGH SAID PASSAGEWAYS TO SAID CHAMBER AND TO SAID VENTURI MEANS, AND MEANS CONNECTED WITH SAID PISTON AND SAID VALVE MEANS FOR SO ACTUATING SAID VALVE MEANS RESPONSIVE TO SAID RECIPROCATION OF SAID PISTON.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |