Patent US3088534A successfully refreshed from Google Patents.
US3088534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well point
Assignee: Individual
•
Filing: 1962-05-18
•
Granted: 1963-05-07
•
Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 George A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:51
CPC Classifications
E; E02; E02D; E02D19/00; E02D19/06; E02D19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A WELL POINT, AN ELONGATED MAIN VERTICAL CASING FORMED WITH SPACED HORIZONTAL RELATIVELY NARROW SLOTS, SAID CASING HAVING TOP AND BOTTOM WALLS, AN IMPERFORATE TUBE MOUNTED AXIALLY IN SAID CASING AND EXTENDING THROUGH SAID TOP WALL, A PERFORATED TUBE MOUNTED AXIALLY IN THE LOWER PORTION OF SAID CASING, A DEPENDING NOZZLE SECURED CENTRALLY TO SAID BOTTOM WALL AND RECEIVING THE BOTTOM END OF SAID PERFORATED TUBE, A FLOAT BALL MOVABLY DISPOSED IN SAID NOZZLE AND BEING SEALING ENGAGEABLE WITH THE BOTTOM RIM OF SAID PERFORATED TUBE, A VALVE HOUSING CONNECTING THE TOP END OF SAID PERFORATED TUBE AND THE BOTTOM END OF SAID IMPERFORATE TUBE, A VERTICAL FRAME RECIPROCABLY MOUNTED IN SAID VALVE HOUSING, MEANS ON THE FRAME SEALINGLY ENGAGEABLE WITH THE TOP WALL OF THE HOUSING TO SEAL THE HOUSING RELATIVE TO SAID IMPERFORATE TUBE, MEANS BIASING SAID FRAME UPWARDLY TOWARDS SEALING POSITION, THE FRAME BEING MOVABLE DOWNWARDLY RESPONSIVE
Claim 2
Dependent Claim
151 words
IN A WELL POINT, AN ELONGATED MAIN VERTICAL CASING FORMED WITH SPACED HORIZONTAL RELATIVELY NARROW SLOTS, SAID CASING HAVING TOP AND BOTTOM WALLS, AN IMPERFORATE TUBE MOUNTED AXIALLY IN SAID CASING AND EXTENDING THROUGH SAID TOP WALL, A PERFORATED TUBE MOUNTED AXIALLY IN THE LOWER PORTION OF SAID CASING, A DEPENDING NOZZLE SECURED CENTRALLY TO SAID BOTTOM WALL AND RECEIVING THE BOTTOM END OF SAID PERFORATED TUBE, A FLOAT BALL MOVABLY DISPOSED IN SAID NOZZLE AND BEING SEALING ENGAGEABLE WITH THE BOTTOM RIM OF SAID PERFORATED TUBE, A VALVE HOUSING CONNECTING THE TOP END OF SAID PERFORATED TUBE AND THE BOTTOM END OF SAID IMPERFORATE TUBE, A VERTICAL FRAME RECIPROCABLY MOUNTED IN SAID VALVE HOUSING, MEANS ON THE FRAME SEALINGLY ENGAGEABLE WITH THE TOP WALL OF THE HOUSING TO SEAL THE HOUSING RELATIVE TO SAID IMPERFORATE TUBE, MEANS BIASING SAID FRAME UPWARDLY TOWARDS SEALING POSITION, THE FRAME BEING MOVABLE DOWNWARDLY RESPONSIVE
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |