US3229489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for bending tubes
Assignee: Individual
•
Filing: 1962-07-03
•
Granted: 1966-01-18
•
Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:50
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/283; B21D; B21D7/00; B21D7/16; B21D7/162; B21D9/00; B21D9/16; B21D9/18; B29C; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29C53/80; B29C53/84; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49403
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
METHOD OF BENDING A STEEL TUBE, COMPRISING PROVIDING A STEEL TUBE OF UNIFORM WALL THICKNESS, SUBJECTING IN EACH OF A NUMBER OF CIRCUMFERENTIALLY EXTENDING NARROW PORTIONS OF THE TUBE SUCCESSIVELY TO HEATING WHILE EXERTING UPON SAID PORTIONS A THRUST FORCE APPLIED WHILE EXERTLY OF THE TUBE, TO CAUSE A THICKENING OF THE METAL AT SAID PORTIONS, EACH OF SAID PORTIONS BEING LEFT LATERALLY UNSUPPORTED AT LEAST ON THE OUTER FACE SURFACE THEREOF WHILE SAID THICKENING IS TAKING PLACE, WITH THE TUBE BEING SUPPORTED ON THE OUTSIDE OF THE BEND.
Claim 2
Dependent Claim
89 words
METHOD OF BENDING A STEEL TUBE, COMPRISING PROVIDING A STEEL TUBE OF UNIFORM WALL THICKNESS, SUBJECTING IN EACH OF A NUMBER OF CIRCUMFERENTIALLY EXTENDING NARROW PORTIONS OF THE TUBE SUCCESSIVELY TO HEATING WHILE EXERTING UPON SAID PORTIONS A THRUST FORCE APPLIED WHILE EXERTLY OF THE TUBE, TO CAUSE A THICKENING OF THE METAL AT SAID PORTIONS, EACH OF SAID PORTIONS BEING LEFT LATERALLY UNSUPPORTED AT LEAST ON THE OUTER FACE SURFACE THEREOF WHILE SAID THICKENING IS TAKING PLACE, WITH THE TUBE BEING SUPPORTED ON THE OUTSIDE OF THE BEND.
Claim 3
Dependent Claim
197 words
APPARATUS FOR BENDING A TUBE COMPRISING: MEANS FOR GUIDING A PORTION OF SAID TUBE ALONG A STRAIGHT PATH; MEANS FOR DIRECTING A PORTION OF SAID TUBE ALONG A CURVED PATH, SAID TWO MEANS BEING SO ARRANGED AS TO LEAVE A CLEAR SPACE BETWEEN THEM; A HEATING DEVICE LOCATED BETWEEN SAID TWO MEANS FOR SOFTENING A NARROW PORTION OF TUBE MATERIAL EXTENDING CIRCUMFERENTIALLY OF THE TUBE; MEANS FOR IMPELLING THE TUBE OUT OF SAID GUIDING MEANS AND INTO CONTACT WITH SAID DIRECTING MEANS, TO PRODUCE A BEND AT SAID PORTION AND TO PRESENT AN ADJACENT PORTION OF TUBE MATERIAL TO SAID HEATING DEVICE; A COOLING DEVICE DISPOSED RELATIVE TO SAID HEATING DEVICE IN THE DIRECTION OF PROGRESSION OF THE TUBE AND DISPOSED FOR COOLING EACH OF SAID PORTIONS AFTER BENDING; A SCREEN LOCATED BETWEEN SAID COOLING DEVICE AND HEATING DEVICE; SAID IMPELLING MEANS AND SAID GUIDING MEANS COMPRISING A SERIES OF DRIVING ROLLERS LOCATED TO ADVANCE SAID TUBE TOWARDS SAID DIRECTING MEANS; SAID DIRECTING MEANS COMPRISING A PLURALITY OF ROLLERS, AT LEAST ONE OF SAID PLURALITY BEING LOCATED EXTERNALLY OF SAID TUBE ON THE OUTER SIDE OF THE BEND, AND BEING ADJUSTABLE IN RELATION TO SAID IMPELLING ROLLERS.
Claim 4
Dependent Claim
197 words
APPARATUS FOR BENDING A TUBE COMPRISING: MEANS FOR GUIDING A PORTION OF SAID TUBE ALONG A STRAIGHT PATH; MEANS FOR DIRECTING A PORTION OF SAID TUBE ALONG A CURVED PATH, SAID TWO MEANS BEING SO ARRANGED AS TO LEAVE A CLEAR SPACE BETWEEN THEM; A HEATING DEVICE LOCATED BETWEEN SAID TWO MEANS FOR SOFTENING A NARROW PORTION OF TUBE MATERIAL EXTENDING CIRCUMFERENTIALLY OF THE TUBE; MEANS FOR IMPELLING THE TUBE OUT OF SAID GUIDING MEANS AND INTO CONTACT WITH SAID DIRECTING MEANS, TO PRODUCE A BEND AT SAID PORTION AND TO PRESENT AN ADJACENT PORTION OF TUBE MATERIAL TO SAID HEATING DEVICE; A COOLING DEVICE DISPOSED RELATIVE TO SAID HEATING DEVICE IN THE DIRECTION OF PROGRESSION OF THE TUBE AND DISPOSED FOR COOLING EACH OF SAID PORTIONS AFTER BENDING; A SCREEN LOCATED BETWEEN SAID COOLING DEVICE AND HEATING DEVICE; SAID IMPELLING MEANS AND SAID GUIDING MEANS COMPRISING A SERIES OF DRIVING ROLLERS LOCATED TO ADVANCE SAID TUBE TOWARDS SAID DIRECTING MEANS; SAID DIRECTING MEANS COMPRISING A PLURALITY OF ROLLERS, AT LEAST ONE OF SAID PLURALITY BEING LOCATED EXTERNALLY OF SAID TUBE ON THE OUTER SIDE OF THE BEND, AND BEING ADJUSTABLE IN RELATION TO SAID IMPELLING ROLLERS.
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |