Patent US3283754A successfully refreshed from Google Patents.
US3283754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for administering controlled volumes of gas
Assignee: Stephenson Corp
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Filing: 1963-07-12
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Granted: 1966-11-08
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Helen L Goodner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/104; A61M16/0057; A61M16/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
APPARATUS FOR INTERMITTENTLY ADMINISTERING CONTROLLED VOLUMES OF GAS WHICH COMPRISING, A BELLOWS, A CYLINDER, ONE OR MORE SOURCES OF GAS UNDER PRESSURE, FIRST CONDUIT MEANS LEADING FROM ONE OR MORE SOURCES OF GAS TO THE BELLOWS, SECOND CONDUIT MEANS LEADING FROM THE BELLOWS TO SUPPLY GAS TO THE PATIENT, THIRD CONDUIT MEANS LEADING FROM A SOURCE OF GAS UNDER PRESSURE TO SAID CYLINDER, MEANS MOVABLE IN SAID CYLINDER IN RESPONSE TO PRESSURE OF GAS IN SAID CYLINDER, MEANS FOR COMMUNICATING MOVEMENT OF SAID MEANS WITHIN THE CYLINDER TO THE BELLOWS TO INTERMITTENTLY COLLAPSE THE BELLOWS AND DELIVER TO THE SECOND CONDUIT MEANS EQUAL VOLUMES OF GAS WITHIN EQUAL PERIODS OF TIME, AND MEANS RESPONSIVE TO BACK PRESSURE IN THE CYLINDER TO PASS ADDITIONAL GAS FROM SAID SOURCE TO THE CYLINDER IN PROPORTION TO THE AMOUNT OF SAID BACK PRESSURE.
Claim 2
Dependent Claim
139 words
APPARATUS FOR INTERMITTENTLY ADMINISTERING CONTROLLED VOLUMES OF GAS WHICH COMPRISING, A BELLOWS, A CYLINDER, ONE OR MORE SOURCES OF GAS UNDER PRESSURE, FIRST CONDUIT MEANS LEADING FROM ONE OR MORE SOURCES OF GAS TO THE BELLOWS, SECOND CONDUIT MEANS LEADING FROM THE BELLOWS TO SUPPLY GAS TO THE PATIENT, THIRD CONDUIT MEANS LEADING FROM A SOURCE OF GAS UNDER PRESSURE TO SAID CYLINDER, MEANS MOVABLE IN SAID CYLINDER IN RESPONSE TO PRESSURE OF GAS IN SAID CYLINDER, MEANS FOR COMMUNICATING MOVEMENT OF SAID MEANS WITHIN THE CYLINDER TO THE BELLOWS TO INTERMITTENTLY COLLAPSE THE BELLOWS AND DELIVER TO THE SECOND CONDUIT MEANS EQUAL VOLUMES OF GAS WITHIN EQUAL PERIODS OF TIME, AND MEANS RESPONSIVE TO BACK PRESSURE IN THE CYLINDER TO PASS ADDITIONAL GAS FROM SAID SOURCE TO THE CYLINDER IN PROPORTION TO THE AMOUNT OF SAID BACK PRESSURE.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |