US3268137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cutting tubes
Assignee: Calumet and Hecla Inc
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Filing: 1965-05-03
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Granted: 1966-08-23
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 John R Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
B; B23; B23D; B23D23/00; B23D21/00; B23D21/04; B23D31/00; B23D31/002; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325; Y10T225/364; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0385
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF SEVERING TUBING WHICH COMPRISES SUPPORTING THE TUBING AT A SUPPORT ZONE AGAINST LATERA DISPLACEMENT AND ROTATION, APPLYING A CUTTING AND BENDING ACTION PROGRESSIVELY AROUND THE TUBING AT A SEVERING ZONE DISPLACED AXIALLY OF THE TUBING FROM THE SUPPORT ZONE, TERMINATING THE CUTTING ACTION BEFORE THE DEPTH OF CUT APPROACHES THE WALL THICKNESS OF THE TUBING AND CONTINUING THE BENDING ACTION PROGRESSIVELY AROUND THE TUBING UNTIL THE TUBING IS SEVERED.
Claim 2
Independent Claim
72 words
THE METHOD OF SEVERING TUBING WHICH COMPRISES SUPPORTING THE TUBING AT A SUPPORT ZONE AGAINST LATERA DISPLACEMENT AND ROTATION, APPLYING A CUTTING AND BENDING ACTION PROGRESSIVELY AROUND THE TUBING AT A SEVERING ZONE DISPLACED AXIALLY OF THE TUBING FROM THE SUPPORT ZONE, TERMINATING THE CUTTING ACTION BEFORE THE DEPTH OF CUT APPROACHES THE WALL THICKNESS OF THE TUBING AND CONTINUING THE BENDING ACTION PROGRESSIVELY AROUND THE TUBING UNTIL THE TUBING IS SEVERED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |