US3216867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermochemical scarfing process
Assignee: Union Carbide Corp
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Filing: 1963-04-29
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Granted: 1965-11-09
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Vries Joseph E De
- 👤 Allmang William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:16
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
PROCESS OF STARTING A THERMOCHEMICAL SCARFING PASS TO CUT A SMOOTH FLUTE IN THE SURFACE OF A FERROUS METAL BODY MOVING AT A CONSTANT SELECTED SPEED WITHIN THE NORMAL SPEED RANGE OF THERMOCHEMICAL SCARFING OF SUCH BODY, WHICH COMPRISES APPLYING A STREAM OF OXYGEN-CONTAINING PREHEATED BURNING POWDER AT AN ACUTE ANGLE AGAINST SUCH MOVING SURFACE TO PREPARE THE LATTER FOR STARTING WHEN THE FLOW OF OXYGEN TO THE SCARFING VALUE TO START THE THERMOCHEMICAL PASS WITH A GRADUAL INCRASE IN WIDTH AND DEPTH OF THE FLUTE WITHOUT ANY CHANGE IN THE MOVEMENT OF THE BODY AT SUCH SELECTED SCARFING SPEED.
Claim 2
Dependent Claim
100 words
PROCESS OF STARTING A THERMOCHEMICAL SCARFING PASS TO CUT A SMOOTH FLUTE IN THE SURFACE OF A FERROUS METAL BODY MOVING AT A CONSTANT SELECTED SPEED WITHIN THE NORMAL SPEED RANGE OF THERMOCHEMICAL SCARFING OF SUCH BODY, WHICH COMPRISES APPLYING A STREAM OF OXYGEN-CONTAINING PREHEATED BURNING POWDER AT AN ACUTE ANGLE AGAINST SUCH MOVING SURFACE TO PREPARE THE LATTER FOR STARTING WHEN THE FLOW OF OXYGEN TO THE SCARFING VALUE TO START THE THERMOCHEMICAL PASS WITH A GRADUAL INCRASE IN WIDTH AND DEPTH OF THE FLUTE WITHOUT ANY CHANGE IN THE MOVEMENT OF THE BODY AT SUCH SELECTED SCARFING SPEED.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |