US2837413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide absorber for anesthetic administering apparatus
Assignee: Airco Inc
•
Filing: 1955-04-13
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Granted: 1958-06-03
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Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Wayne W Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:24
CPC Classifications
A; A62; A62B; A62B19/00; A61; A61M; A61M16/00; A61M16/10; A61M16/104; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86743
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A CARBON DIOXIDE ABSORBER FOR ANESTHETIC ADMINISTERING APPARATUS HAVING A CANISTER THROUGH WHICH ANESTHETIC GASES ARE ADAPTED TO BE PASSED COMPRISING, A HOUSING HAVING INLET AND AN OUTLET GAS PASSAGES, A VALVE MEMBER ADJUSTABLE TO "OFF" AND "ON" POSITIONS RECEIVED IN SAID HOUSING, HAVING A PASSAGE FORMING A CONNECTING DUCT BETWEEN SAID INLET AND SAID OUTLET PASSAGES IN THE "OFF" POSITION OF THE VALVE ELEMENT, SECOND AND THIRD PASSAGES, IN SAID VALVE ELEMENT ADAPTED TO REGISTER RESPECTIVELY WITH SAID INLET AND OUTLET PASSAGES IN THE "ON" POSITION OF SAID VALVE ELEMENT, SAID SECOND AND THIRD PASSAGES, TERMINATING IN CORRESPONDING OPENINGS IN A CANISTER RECEIVING PORTION OF SAID VALVE ELEMENT EXTERNALLY OF SAID HOUSING, AND A CANISTER REMOVABLY MOUNTED ON SAID CANISTER RECEIVING PORTION OF SAID VALVE ELEMENT IN COMMUNICATION WITH SAID OPENINGS, SUCH THAT GASES ARE PASSED THROUGH SAID CANISTER WHEN THE VALVE ELEMENT IS IN "ON" POSITION
Claim 2
Dependent Claim
148 words
A CARBON DIOXIDE ABSORBER FOR ANESTHETIC ADMINISTERING APPARATUS HAVING A CANISTER THROUGH WHICH ANESTHETIC GASES ARE ADAPTED TO BE PASSED COMPRISING, A HOUSING HAVING INLET AND AN OUTLET GAS PASSAGES, A VALVE MEMBER ADJUSTABLE TO "OFF" AND "ON" POSITIONS RECEIVED IN SAID HOUSING, HAVING A PASSAGE FORMING A CONNECTING DUCT BETWEEN SAID INLET AND SAID OUTLET PASSAGES IN THE "OFF" POSITION OF THE VALVE ELEMENT, SECOND AND THIRD PASSAGES, IN SAID VALVE ELEMENT ADAPTED TO REGISTER RESPECTIVELY WITH SAID INLET AND OUTLET PASSAGES IN THE "ON" POSITION OF SAID VALVE ELEMENT, SAID SECOND AND THIRD PASSAGES, TERMINATING IN CORRESPONDING OPENINGS IN A CANISTER RECEIVING PORTION OF SAID VALVE ELEMENT EXTERNALLY OF SAID HOUSING, AND A CANISTER REMOVABLY MOUNTED ON SAID CANISTER RECEIVING PORTION OF SAID VALVE ELEMENT IN COMMUNICATION WITH SAID OPENINGS, SUCH THAT GASES ARE PASSED THROUGH SAID CANISTER WHEN THE VALVE ELEMENT IS IN "ON" POSITION
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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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |