US3200479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a sand retaining blow tube
Assignee: Individual
•
Filing: 1963-08-05
•
Granted: 1965-08-17
•
Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:45
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/23; B22C15/24; B22C15/245; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49432
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF PRODUCING A SAND PINCHING AND SAND FLOW CONTROL BLOW TUBE COMPRISING PROVIDING A RANDOM LENGTH OF STOCK TUBE HAVING A CASING OF UNIFORM DIAMETER AND THICKNESS WITH A RESILIENT LINER OF UNIVORM DIAMETER AND THICKNESS SECURED THEREIN, SEVERING A GIVEN LENGTH STOCK PIECE FROM SAID STOCK TUBE FOR A PREDETEMINED INSTALLATION, THEN FORMING ONE END OF SAID STOCK PIECE INTO A TAPERED SAND DISCHARGE END BY CONSTRICTING THE CASING OF SAID STOCK PIECE RADIALLY INWARDLY AND CORRESPONDINGLY REDUCING THE ADJACENT CIRCUMFERENTIAL PORTION OF THE RESILIENT LINER TO BUILD UP THE THICKNESS OF SAID LINER AT THE RESTRICTED TAPERED DISCHARGE ND OF SAID STOCK PIECE AND MAINTAINING SAID RESILIENT LINER IN SAID BUILT UP THICKENED FORM WITH SAID CONSTRICTED CASING.
Claim 2
Independent Claim
122 words
THE METHOD OF PRODUCING A SAND PINCHING AND SAND FLOW CONTROL BLOW TUBE COMPRISING PROVIDING A RANDOM LENGTH OF STOCK TUBE HAVING A CASING OF UNIFORM DIAMETER AND THICKNESS WITH A RESILIENT LINER OF UNIVORM DIAMETER AND THICKNESS SECURED THEREIN, SEVERING A GIVEN LENGTH STOCK PIECE FROM SAID STOCK TUBE FOR A PREDETEMINED INSTALLATION, THEN FORMING ONE END OF SAID STOCK PIECE INTO A TAPERED SAND DISCHARGE END BY CONSTRICTING THE CASING OF SAID STOCK PIECE RADIALLY INWARDLY AND CORRESPONDINGLY REDUCING THE ADJACENT CIRCUMFERENTIAL PORTION OF THE RESILIENT LINER TO BUILD UP THE THICKNESS OF SAID LINER AT THE RESTRICTED TAPERED DISCHARGE ND OF SAID STOCK PIECE AND MAINTAINING SAID RESILIENT LINER IN SAID BUILT UP THICKENED FORM WITH SAID CONSTRICTED CASING.
References Cited (Backward Citations)
US440694A
Cited
US2248969A
Cited
US2751676A
Cited
US2971554A
Cited
US2834094A
Cited
US3047937A
Cited
US3068029A
Cited
US3104432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |