US3225581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal forming process for shaping ends of tubes
Assignee: Spectrum Brands Inc
•
Filing: 1961-08-21
•
Granted: 1965-12-28
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Hinderer Gottlob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:37
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/04; B; B21; B21D; B21D41/00; B21D41/02; B21D41/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE PROCESS OF MAKING A PLUMBING FITTING FROM A MALLEABLE TUBE OF SUBSTANTIALLY UNIFORM CROSS-SECTION, WHICH COMPRISES: SECURING THE TUBE BY A CLAMPING DEVICE SO THAT A LENGTH OF THE TUBE IS EXPOSED BEYOND THE DEVICE; DRIVING A FORMING TOOL INTO THE END OF THE TUBE TO DEFINE AN ENLARGED END THAT MERGES WITH THE MAIN BODY OF THE TUBE AT A SUBSTANTIALLY CONICAL PART TO FORM A BENDING RING; FORCING THE EDGE OF THE ENLARGED END PROGRESSIVELY
Claim 2
Dependent Claim
78 words
THE PROCESS OF MAKING A PLUMBING FITTING FROM A MALLEABLE TUBE OF SUBSTANTIALLY UNIFORM CROSS-SECTION, WHICH COMPRISES: SECURING THE TUBE BY A CLAMPING DEVICE SO THAT A LENGTH OF THE TUBE IS EXPOSED BEYOND THE DEVICE; DRIVING A FORMING TOOL INTO THE END OF THE TUBE TO DEFINE AN ENLARGED END THAT MERGES WITH THE MAIN BODY OF THE TUBE AT A SUBSTANTIALLY CONICAL PART TO FORM A BENDING RING; FORCING THE EDGE OF THE ENLARGED END PROGRESSIVELY
References Cited (Backward Citations)
US1152858A
Cited
US1804814A
Cited
GB312024A
Cited
US1817854A
Cited
US2460110A
Cited
US2552768A
Cited
GB709061A
Cited
US2857666A
Cited
US2746325A
Cited
US2780122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |