US3553989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube bender with incremental tube measurement
Assignee: Pines Engineering Co Inc
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Filing: 1968-04-23
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Granted: 1971-01-12
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Expires: 1988-04-23
Abstract
Abstract A NUMERICALLY CONTROLLED TUBE BENDER IN WHICH EACH BEND IS INCREMENTALLY PROGRAMED IN TERMS OF THE DISTANCE BETWEEN STARTING POINTS OF SUCCESSIVE BENDS, THE PLANE AND THE ANGLE OF THE BENDS. THE LENGTH OF TUBE USED IN MAKING EACH BEND, WHICH VARIES WITH TUBE CHARACTERISTICS, IS SUBTRACTED FROM THE PROGRAMED DIMENSION BETWEEN THE BEND STARTING POINTS AND THE DISTANCE BETWEEN THE END OF THE FIRST BEND AND THE START OF THE SECOND BEND IS ADJUSTED ACCORDINGLY.
Inventors
- 👤 Harrison Munro
- 👤 Robert A Suding
- 👤 Richard E Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:38
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/188; B; B21; B21D; B21D5/00; B21D5/004; B21D7/00; B21D7/12; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |