Patent US3298320A successfully refreshed from Google Patents.
US3298320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atraumatic fluid pump
Assignee: Arthur D Little Inc
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Filing: 1965-05-17
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Granted: 1967-01-17
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Allen Latham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:51
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/80; A61M60/855; A61M60/89; A61M60/898; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/30; A61M60/36; A61M60/38; A61M60/40; A61M60/424; A61M60/427; A61M60/835; A61M60/837; A61M60/845; A61M60/851; A61M60/892; A61M60/894; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A PUMP SUITABLE FOR PUMPING A LIQUID SUBJECT TO INFLICTION OF TRAUMA, COMPRISING IN COMBINATION (A) A DISPLACEMENT FLUID VOLUME INTERNAL OF SAID PUMP AND HAVING VALVE-CONTROLLED LIQUID DISCHARGE MEANS; (B) A FLUID PASSAGE SURROUNDING SAID DISPLACEMENT VOLUME AND SEPARATED THEREFROM BY A CONTOURED SHOULDER; (C) A LIQUID INTAKE CONDUIT IN FLUID COMMUNICATION WITH SAID FLUID PASSAGE AND OF A HEIGHT SUCH THAT LIQUID CONTAINED THEREIN CAN DEVELOP A SMALL PREDETERMINED HYDROSTATIC HEAD; (D) A FIRST SUBSTANTIALLY RIGID DIAPHRGAM MEMBER ACTUATABLE BY FLUID PRESSURE AND HAVING A CONTOURED PORTION ENGAGEABLE WITH SAID CONTOURED SHOULDER THEREBY FORMING WITH SAID SHOULDER AN INLET VALVE ADAPTED TO CONTROL THE INTAKE OF LIQUID INTO SAID DISPLACEMENT VOLUME; (E) A SECOND FLEXIBLE DISPHRAGM MEMBER ACTUATABLE BY FLUID PRESSURE MOVABLE WITHIN SAID DISPLACEMENT VOLUME AND ADAPTED TO EFFECT DISCHARGE OF LIQUID FROM SAID PUMP; (F) A FORAMINOUS MEMBER WITHIN SAID DISPLACEMENT VOLUME ADAPTED TO LIMIT THE FORWARD MOVEMENT OF SAID SECOND DIAPHRAGM MEMBER; AND
Claim 2
Dependent Claim
158 words
A PUMP SUITABLE FOR PUMPING A LIQUID SUBJECT TO INFLICTION OF TRAUMA, COMPRISING IN COMBINATION (A) A DISPLACEMENT FLUID VOLUME INTERNAL OF SAID PUMP AND HAVING VALVE-CONTROLLED LIQUID DISCHARGE MEANS; (B) A FLUID PASSAGE SURROUNDING SAID DISPLACEMENT VOLUME AND SEPARATED THEREFROM BY A CONTOURED SHOULDER; (C) A LIQUID INTAKE CONDUIT IN FLUID COMMUNICATION WITH SAID FLUID PASSAGE AND OF A HEIGHT SUCH THAT LIQUID CONTAINED THEREIN CAN DEVELOP A SMALL PREDETERMINED HYDROSTATIC HEAD; (D) A FIRST SUBSTANTIALLY RIGID DIAPHRGAM MEMBER ACTUATABLE BY FLUID PRESSURE AND HAVING A CONTOURED PORTION ENGAGEABLE WITH SAID CONTOURED SHOULDER THEREBY FORMING WITH SAID SHOULDER AN INLET VALVE ADAPTED TO CONTROL THE INTAKE OF LIQUID INTO SAID DISPLACEMENT VOLUME; (E) A SECOND FLEXIBLE DISPHRAGM MEMBER ACTUATABLE BY FLUID PRESSURE MOVABLE WITHIN SAID DISPLACEMENT VOLUME AND ADAPTED TO EFFECT DISCHARGE OF LIQUID FROM SAID PUMP; (F) A FORAMINOUS MEMBER WITHIN SAID DISPLACEMENT VOLUME ADAPTED TO LIMIT THE FORWARD MOVEMENT OF SAID SECOND DIAPHRAGM MEMBER; AND
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |