US3123015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
linklater
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:23
CPC Classifications
F; F04; F04F; F04F1/00; F04F1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A LIQUID PUMP COMPRISING: A RESERVOIR; A STANDPIPE HAVING AN OPEN UPPER END DISPOSED WITHIN THE RESERVOIR WITH THE OPEN UPPER END BEING LOCATED BELOW THE NORMAL LIQUID LEVEL OF SAID RESERVOIR; A STANDPIPE ENCLOSURE MEANS OPEN AT ITS LOWER END AND PLACED ABOUT SAID STANDPIPE WITH SAID OPENING LOCATED BELOW THE UPPER END OF THE STANDPIPE, SAID OPENING PROVIDING LIQUID COMMUNICATION BETWEEN THE INTERIOR OF THE ENCLOSURE MEANS AND THE RESERVOIR; MEANS FOR INTRODUCING A PRESSURIZED FLUID TO THE INTERIOR OF THE STANDPIPE ENCLOSURE MEANS ABOVE THE NORMAL LIQUID LEVEL THEREIN; AND A LIQUID WITHDRAWAL MEANS CONNECTING TO THE STANDPIPE FOR REMOVING LIQUID THEREFROM IN RESPONSE TO INTRODUCTION OF PRESSURIZED FLUID TO THE INTERIOR OF SAID STANDPIPE ENCLOSURE MEANS.
Claim 2
Dependent Claim
120 words
A LIQUID PUMP COMPRISING: A RESERVOIR; A STANDPIPE HAVING AN OPEN UPPER END DISPOSED WITHIN THE RESERVOIR WITH THE OPEN UPPER END BEING LOCATED BELOW THE NORMAL LIQUID LEVEL OF SAID RESERVOIR; A STANDPIPE ENCLOSURE MEANS OPEN AT ITS LOWER END AND PLACED ABOUT SAID STANDPIPE WITH SAID OPENING LOCATED BELOW THE UPPER END OF THE STANDPIPE, SAID OPENING PROVIDING LIQUID COMMUNICATION BETWEEN THE INTERIOR OF THE ENCLOSURE MEANS AND THE RESERVOIR; MEANS FOR INTRODUCING A PRESSURIZED FLUID TO THE INTERIOR OF THE STANDPIPE ENCLOSURE MEANS ABOVE THE NORMAL LIQUID LEVEL THEREIN; AND A LIQUID WITHDRAWAL MEANS CONNECTING TO THE STANDPIPE FOR REMOVING LIQUID THEREFROM IN RESPONSE TO INTRODUCTION OF PRESSURIZED FLUID TO THE INTERIOR OF SAID STANDPIPE ENCLOSURE MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |