US3143252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispensing apparatus
Assignee: Individual
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Filing: 1962-03-05
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Granted: 1964-08-04
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Justin J Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/0005; B05B11/0062; B05B11/0064; B01; B01L; B01L3/00; B01L3/02; B01L3/0203; B05B11/01; B05B11/10; B05B11/1001; B05B11/1005; B05B11/1007; B05B11/1042; B05B11/1061
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
IN A BURETTE DEVICE OF THE CHARACTER DESCRIBED, A SYRINGE CHAMBER, A DISPENSING PLUNGER SEALINGLY AND SLIDABLY MOUNTED IN SAID CHAMBER AND BEING PROVIDED WITH AN ACTUATING PORTION PROJECTING FROM THE CHAMBER, A LIQUID INTAKE CONDUIT ADJACENT THE END OF THE CHAMBER OPPOSITE SAID ACTUATING PORTION, A FRUSTO-CONICAL SEAT MEMBER COMMUNICATIVELY CONNECTING SAID INTAKE CONDUIT TO SAID END OF THE CHAMBER, A VALVE BALL DISPOSED IN SAID SEAT MEMBER AND BEING SEALINGLY ENGAGEABLE IN ITS VERTEX, A LATERALLY EXTENDING DISCHARGE CONDUIT ON SAID SYRINGE CHAMBER, AND A SUBSTANTIALLY TUBULAR INNER CHAMBER IN SAID SYRINGE CHAMBER COMMUNICATIVELY CONNECTED AT ONE END TO AND EXTENDING DOWNWARDLY A SUBSTANTIAL DISTANCE FROM SAID DISCHARGE CONDUIT, THE OTHER END OF SAID INNER CHAMBER EXTENDING ADJACENT SAID FRUSTO-CONICAL SEAT MEMBER AND BEING FORMED WITH AN INWARDLY CONVERGENT OPEN BELLSHAPED PORTION ADAPTED TO SEALINGLY RECEIVE SAID VALVE BALL WHEN THE DEVICE IS INVERTED.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |