US3157079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cut-off machine
Assignee: Individual
•
Filing: 1961-11-24
•
Granted: 1964-11-17
•
Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Harper Laffie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:34
CPC Classifications
B; B23; B23D; B23D45/00; B23D45/18; B23D45/24; Y; Y10; Y10T; Y10T82/00; Y10T82/16; Y10T82/16016; Y10T82/16131; Y10T82/16426; Y10T82/16967
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
THE METHOD OF SEVERING A CYLINDRICAL SHEET METAL PIPE THAT COMPRISES THE STEPS OF: (A) SUPPORTING A LENGTH OF SAID PIPE IN A HORIZONTALLY EXTENDING POSITION AT A PREDETERMINED LEVEL ABOVE THE GROUND; (B) ROTATING SAID PIPE AT SAID LEVEL ABOUT ITS LONGITUDINAL AXIS THROUGH AT LEAST ONE COMPLETE REVOLUTION OF SAID PIPE AND AT THE SAME TIME; (C) CUTTING OUT CONTIGUOUS, DISCRETE PIECES OF SAID PIPE AT ITS LOWERMOST SIDE ONLY ALONG A PAIR OF HORIZONTALLY SPACED PARALLEL LINES EXTENDING CIRCUMFERENTIALLY OF SAID PIPE AND THAT ARE IN PARALLEL PLANES PERPENDICULAR TO SAID AXIS; AND (D) HOLDING THE PORTIONS OF SAID PIPE AT THE OPPOSITE OUTER SIDES OF SAID PAIR OF LINES, AND ADJOINING THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |