US3323339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for corrugating tubes
Assignee: Phelps Dodge Copper Products Corp
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Filing: 1963-10-30
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Granted: 1967-06-06
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Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Howard F Mattil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:50
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A METHOD OF CORRUGATING A TUBE TO FORM EXTERNAL GROOVES THEREIN EXTENDING AROUND THE TUBE IN TURNS SPACED LENGTHWISE OF THE TUBE, SAID METHOD COMPRISING THE STEPS OF PRESSING THE TUBE PERIPHERY RADIALLY INWARD SIMULTANEOUSLY AT A SERIES OF PRESSING LOCATIONS SPACED LENGTHWISE ALONG THE TUBE AND TO DEPTHS WHICH PROGRESSIVELY INCREASE FROM A FIRST TO A LAST LOCATION OF SAID SERIES, ADVANCING THE TUBE AT CONSTANT SPEED LENGTHWISE DURING SAID SIMULTANEOUS MULTIPLE PRESSINGS AND IN THE DIRECTION FROM SAID FIRST TO SAID LAST LOCATION, AND ROTATING THE PRESSING LOCATIONS AS A UNIT AT CONSTANT SPEED AROUND THE ADVANCING TUBE WHILE MAINTAINING SAID LOCATIONS IN POSITIONS TO PRESS SUCCESSIVE TURNS OF SAID GROOVES SIMULTANEOUSLY.
Claim 2
Independent Claim
114 words
A METHOD OF CORRUGATING A TUBE TO FORM EXTERNAL GROOVES THEREIN EXTENDING AROUND THE TUBE IN TURNS SPACED LENGTHWISE OF THE TUBE, SAID METHOD COMPRISING THE STEPS OF PRESSING THE TUBE PERIPHERY RADIALLY INWARD SIMULTANEOUSLY AT A SERIES OF PRESSING LOCATIONS SPACED LENGTHWISE ALONG THE TUBE AND TO DEPTHS WHICH PROGRESSIVELY INCREASE FROM A FIRST TO A LAST LOCATION OF SAID SERIES, ADVANCING THE TUBE AT CONSTANT SPEED LENGTHWISE DURING SAID SIMULTANEOUS MULTIPLE PRESSINGS AND IN THE DIRECTION FROM SAID FIRST TO SAID LAST LOCATION, AND ROTATING THE PRESSING LOCATIONS AS A UNIT AT CONSTANT SPEED AROUND THE ADVANCING TUBE WHILE MAINTAINING SAID LOCATIONS IN POSITIONS TO PRESS SUCCESSIVE TURNS OF SAID GROOVES SIMULTANEOUSLY.
Claim 3
Dependent Claim
153 words
APPARATUS FOR CORRUGATING A TUBE TO FORM EXTERNAL GROOVES THEREIN EXTENDING AROUND THE TUBE PERIPHERY AND SPACED UNIFORMLY LENGTHWISE OF THE TUBE, SAID APPARATUS COMPRISING A HEAD MOUNTED FOR ROTATION ABOUT AN AXIS, MEANS FOR ROTATING THE HEAD AT CONSTANT SPEED ABOUT SAID AXIS, MEANS FOR ADVANCING THE TUBE LENGTHWISE RELATIVE TO THE HEAD AT A CONSTANT SPEED AND WITH THE TUBE AXIS COINCIDING WITH SAID ROTATION AXIS, A SERIES OF TUBE PRESSING ELEMENTS CARRIED BY THE HEAD AND ADAPTED TO ENGAGE THE PERIPHERY OF THE ADVANCING TUBE SIMULTANEOUSLY ALNG A SERIES OF SUCCESSIVE TURNS AROUND SAID PERIPHERY AS THE HEAD ROTATES, AND MEANS MOUNTING THE PRESSING ELEMENTS ON THE HEAD IN SAID POSITIONS WHILE SPACING THE RESPECTIVE ELEMENTS FROM SAID AXIS BY RADIAL DISTANCES WHICH PROGRESSIVELY DECREASE IN THE DIRECTION OF THE TUBE ADVANCEMENT, WHEREBY SAID ELEMENTS GRADUALLY PRESS THE GROOVES TO A DEPTH DETERMINED BY THE SHORTEST OF SAID RADIAL DISTANCES.
Claim 4
Dependent Claim
153 words
APPARATUS FOR CORRUGATING A TUBE TO FORM EXTERNAL GROOVES THEREIN EXTENDING AROUND THE TUBE PERIPHERY AND SPACED UNIFORMLY LENGTHWISE OF THE TUBE, SAID APPARATUS COMPRISING A HEAD MOUNTED FOR ROTATION ABOUT AN AXIS, MEANS FOR ROTATING THE HEAD AT CONSTANT SPEED ABOUT SAID AXIS, MEANS FOR ADVANCING THE TUBE LENGTHWISE RELATIVE TO THE HEAD AT A CONSTANT SPEED AND WITH THE TUBE AXIS COINCIDING WITH SAID ROTATION AXIS, A SERIES OF TUBE PRESSING ELEMENTS CARRIED BY THE HEAD AND ADAPTED TO ENGAGE THE PERIPHERY OF THE ADVANCING TUBE SIMULTANEOUSLY ALNG A SERIES OF SUCCESSIVE TURNS AROUND SAID PERIPHERY AS THE HEAD ROTATES, AND MEANS MOUNTING THE PRESSING ELEMENTS ON THE HEAD IN SAID POSITIONS WHILE SPACING THE RESPECTIVE ELEMENTS FROM SAID AXIS BY RADIAL DISTANCES WHICH PROGRESSIVELY DECREASE IN THE DIRECTION OF THE TUBE ADVANCEMENT, WHEREBY SAID ELEMENTS GRADUALLY PRESS THE GROOVES TO A DEPTH DETERMINED BY THE SHORTEST OF SAID RADIAL DISTANCES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |