Patent US2586539A successfully refreshed from Google Patents.
Patent US3158154A successfully refreshed from Google Patents.
US3158154A
Expired / Lapsed
US
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Anesthesia vaporizer
Assignee: Individual
•
Filing: 1962-09-28
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Granted: 1964-11-24
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Schreiber Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:53
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18; B; B01; B01F; B01F23/00; B01F23/10; B01F23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A VAPORIZER FOR AN ANESTHETIC, LIQUID AT NORMAL TEMPERATURES, AS USED IN AN ANESTHESIA APPARATUS, SAID VAPORIZER HAVING A GAS INLET DISTRIBUTOR CHAMBER, PIPE MEANS FOR SUPPLYING GAS INTO SAID DISTRIBUTOR CHAMBER, A LIQUID ANESTHETIC VAPORIZER UNIT, FIRST PIPE MEANS JOINING SAID DISTRIBUTOR CHAMBER TO SAID VAPORIZER UNIT FOR LEADING INTAKE GAS FROM SAID DISTRIBUTOR CHAMBER INTO SAID UNIT, A GAS MIXING CHAMBER, SECOND PIPE MEANS CONNECTING SAID VAPORIZER UNIT TO SAID MIXING CHAMBER FOR LEADING VAPORIZED GAS FROM SAID UNIT TO SAID MIXING CHAMBER, BY-PASS PIPE MEANS JOINING SAID DISTRIBUTOR CHAMBER TO SAID MIXING CHAMBER, VALVE MEANS FOR CONTROLLING THE FLOW OF GAS THROUGH SAID VAPORIZER, AND OUTLET TUBE MEANS FOR EXHAUSTING GAS FROM SAID MIXING CHAMBER, THE IMPROVEMENT IN WHICH SAID FIRST PIPE MEANS HAS A RELATIVELY LONG LENGTH AS COMPARED TO SAID SECOND PIPE MEANS TO PREVENT NORMAL GAS BACKFLOW FROM SAID VAPORIZER UNIT DUE TO PRESSURE PULSATIONS CAUSED BY THE BREATHING OF THE USER OF THE VAPORIZER FROM REACHING SAID DISTRIBUTION CHAMBER AND SAID BY-PASS PIPE MEANS.
Claim 2
Dependent Claim
172 words
IN A VAPORIZER FOR AN ANESTHETIC, LIQUID AT NORMAL TEMPERATURES, AS USED IN AN ANESTHESIA APPARATUS, SAID VAPORIZER HAVING A GAS INLET DISTRIBUTOR CHAMBER, PIPE MEANS FOR SUPPLYING GAS INTO SAID DISTRIBUTOR CHAMBER, A LIQUID ANESTHETIC VAPORIZER UNIT, FIRST PIPE MEANS JOINING SAID DISTRIBUTOR CHAMBER TO SAID VAPORIZER UNIT FOR LEADING INTAKE GAS FROM SAID DISTRIBUTOR CHAMBER INTO SAID UNIT, A GAS MIXING CHAMBER, SECOND PIPE MEANS CONNECTING SAID VAPORIZER UNIT TO SAID MIXING CHAMBER FOR LEADING VAPORIZED GAS FROM SAID UNIT TO SAID MIXING CHAMBER, BY-PASS PIPE MEANS JOINING SAID DISTRIBUTOR CHAMBER TO SAID MIXING CHAMBER, VALVE MEANS FOR CONTROLLING THE FLOW OF GAS THROUGH SAID VAPORIZER, AND OUTLET TUBE MEANS FOR EXHAUSTING GAS FROM SAID MIXING CHAMBER, THE IMPROVEMENT IN WHICH SAID FIRST PIPE MEANS HAS A RELATIVELY LONG LENGTH AS COMPARED TO SAID SECOND PIPE MEANS TO PREVENT NORMAL GAS BACKFLOW FROM SAID VAPORIZER UNIT DUE TO PRESSURE PULSATIONS CAUSED BY THE BREATHING OF THE USER OF THE VAPORIZER FROM REACHING SAID DISTRIBUTION CHAMBER AND SAID BY-PASS PIPE MEANS.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |