US3120328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing pump
Assignee: Drackett Co
•
Filing: 1961-08-15
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Granted: 1964-02-04
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Expires: 1981-08-15
Abstract
No abstract record available.
Inventors
- 👤 Douglas F Corsette
- 👤 William H Harnage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:41
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1042; B05B11/1043; B05B11/1046; B05B11/1047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A DISPENSING PUMP FOR A CONTAINER COMPRISING: A CONTAINER CAP HAVING AN END WALL FORMED WITH A CIRCULAR OPENING THERETHROUGH AND HAVING AN AXIALLY UPSTANDING ANNULAR RIM AROUND SAID OPENING; A HOLLOW PUMP BARREL DEFINING A PUMP CHAMBER OPEN AT ITS UPPER END AND HAVING A RADIAL FLANGE THEREAROUND ADJACENT SAID END; AND ANNULAR COAXIAL EXTENSION OF SAID BARREL PROJECTING ABOVE SAID FLANGE AND BEING RECEIVED COAXIALLY WITHIN SAID RIM; A PLUNGER COMPRISING A PISTON RECIPROCABLE IN SAID PUMP CHAMBER AND A PLUNGERSTEM PROJECTING COAXIALLY FROM THE CHAMBER THROUGH SAID OPEN END; AN ANNULAR COLLAR AROUND AND IN WIPING ENGAGEMENT WITH SAID STEM, SAID COLLAR OVERLYING AND ABUTTING AXIALLY AGAINST SAID CAP TO CONFINE SAME BETWEEN IT AND SAID FLANGE, AND BEING FORMED TO DEFINE A DOWNWARDLY OPENING ANNULAR GROOVE FOR SNUG RECEPTION OF BOTH SAID EXTENSION AND SAID RIM, SAID GROOVE BEING DEFINED BY A RADIALLY INNER ANNULAR WALL RELEASABLY ENGAGING SAID EXTENSION, AND BY A RADIALLY OUTER ANNULAR WALL RELEASABLY ENGAGING SAID RIM, SAID INNER ANNULAR WALL
Claim 2
Dependent Claim
169 words
A DISPENSING PUMP FOR A CONTAINER COMPRISING: A CONTAINER CAP HAVING AN END WALL FORMED WITH A CIRCULAR OPENING THERETHROUGH AND HAVING AN AXIALLY UPSTANDING ANNULAR RIM AROUND SAID OPENING; A HOLLOW PUMP BARREL DEFINING A PUMP CHAMBER OPEN AT ITS UPPER END AND HAVING A RADIAL FLANGE THEREAROUND ADJACENT SAID END; AND ANNULAR COAXIAL EXTENSION OF SAID BARREL PROJECTING ABOVE SAID FLANGE AND BEING RECEIVED COAXIALLY WITHIN SAID RIM; A PLUNGER COMPRISING A PISTON RECIPROCABLE IN SAID PUMP CHAMBER AND A PLUNGERSTEM PROJECTING COAXIALLY FROM THE CHAMBER THROUGH SAID OPEN END; AN ANNULAR COLLAR AROUND AND IN WIPING ENGAGEMENT WITH SAID STEM, SAID COLLAR OVERLYING AND ABUTTING AXIALLY AGAINST SAID CAP TO CONFINE SAME BETWEEN IT AND SAID FLANGE, AND BEING FORMED TO DEFINE A DOWNWARDLY OPENING ANNULAR GROOVE FOR SNUG RECEPTION OF BOTH SAID EXTENSION AND SAID RIM, SAID GROOVE BEING DEFINED BY A RADIALLY INNER ANNULAR WALL RELEASABLY ENGAGING SAID EXTENSION, AND BY A RADIALLY OUTER ANNULAR WALL RELEASABLY ENGAGING SAID RIM, SAID INNER ANNULAR WALL
References Cited (Backward Citations)
US2657834A
Cited
US2870943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |