Patent US3128504A successfully refreshed from Google Patents.
US3128504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a plastic drip chamber
Assignee: MCGAW LAB Inc
•
Filing: 1961-03-10
•
Granted: 1964-04-14
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Gewecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:49
CPC Classifications
B; B29; B29C; B29C33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A MOLD FOR MAKING A DRIP CHAMBER FROM THERMOPLASTIC TUBING COMPRISING A MOLD BODY HAVING A CYLINDRICAL CAVITY OF INSULATING MATERIAL WITH AN UPSTANDING METAL SPINDLE AT ITS CENTER FORMING AN ANNULAR RECESS BETWEEN IT AND THE CAVITY FOR RECEIVING THE LOWER END OF A LENGTH OF TRANSPARENT THERMOPLASTIC TUBING, SAID SPINDLE HAVING A DOME SHAPED UPPER END EXTENDING ABOVE SAID ANNULAR RECESS AND OPPOSITE THE UPPER END OF SAID LENGTH OF TUBING, A SMALL DIAMETER METAL SPINDLE PROJECTING UP FROM THE CENTER OF SAID DOME SHAPED UPPER END FOR RECEIVING A LENGTH OF SMALLER DIAMETER THERMOPLASTIC TUBING, SAID DOME SHAPED SECTION HAVING A REENTRANT ANNULAR RECESS FOR RECEIVING THE LOWER END OF THE SMALLER DIAMETER TUBING A CONTROLLED DISTANCE BELOW THE OUTER SURFACE OF SAID DOME SECTION, A METAL MOLD CAP HAVING ACAVITY COMPLEMENTARY TO AND OF SLIGHTLY LARGER SIZE THAN SAID DOME SECTION AND HAVING A CENTRAL OPENING SLIDABLY RECEIVING THE UPPER END OF SAID SMALL DIAMETER TUBING, INSULATING MEANS BETWEEN SAID MOLD CAP AND BODY, A SOURCE OF HIGH FRE-
Claim 2
Dependent Claim
173 words
A MOLD FOR MAKING A DRIP CHAMBER FROM THERMOPLASTIC TUBING COMPRISING A MOLD BODY HAVING A CYLINDRICAL CAVITY OF INSULATING MATERIAL WITH AN UPSTANDING METAL SPINDLE AT ITS CENTER FORMING AN ANNULAR RECESS BETWEEN IT AND THE CAVITY FOR RECEIVING THE LOWER END OF A LENGTH OF TRANSPARENT THERMOPLASTIC TUBING, SAID SPINDLE HAVING A DOME SHAPED UPPER END EXTENDING ABOVE SAID ANNULAR RECESS AND OPPOSITE THE UPPER END OF SAID LENGTH OF TUBING, A SMALL DIAMETER METAL SPINDLE PROJECTING UP FROM THE CENTER OF SAID DOME SHAPED UPPER END FOR RECEIVING A LENGTH OF SMALLER DIAMETER THERMOPLASTIC TUBING, SAID DOME SHAPED SECTION HAVING A REENTRANT ANNULAR RECESS FOR RECEIVING THE LOWER END OF THE SMALLER DIAMETER TUBING A CONTROLLED DISTANCE BELOW THE OUTER SURFACE OF SAID DOME SECTION, A METAL MOLD CAP HAVING ACAVITY COMPLEMENTARY TO AND OF SLIGHTLY LARGER SIZE THAN SAID DOME SECTION AND HAVING A CENTRAL OPENING SLIDABLY RECEIVING THE UPPER END OF SAID SMALL DIAMETER TUBING, INSULATING MEANS BETWEEN SAID MOLD CAP AND BODY, A SOURCE OF HIGH FRE-
References Cited (Backward Citations)
US2169315A
Cited
US2413338A
Cited
US2419864A
Cited
US2514937A
Cited
AT167455B
Cited
US2922256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |