US3230116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving end starts in mechanized scarfing
Assignee: Union Carbide Corp
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Filing: 1964-10-23
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Granted: 1966-01-18
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Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 Allan R Wandelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06; B23K7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
METHOD OF THERMOCHEMICALLY SCARFING THE SURFACE OF A MOVING STEEL WORKPIECE WHICH COMPRISES FEEDING THE WORKPIECE TOWARD A SCARFING UNIT AT A LOW RATE OF SPEED, FORMING FORWARD OF SAID SCARFING UNIT A SHEET-LIKE FLAME CONTAINING ADJUVANT IRON POWDER, DIRECTING SAID FLAME AT AN ACUTE DIHEDRAL ANGLE TO SAID SURFACE TO BE SCARFED SO AS TO STRIKE THE FORWARD END OF THE WORKPIECE, TO START A THERMOCHEMICAL REACTION ON SAID END WHICH WILL BE CARRIED OVER THE EDGE OF SAID SURFACE AND IMPINGE UPON SAID SURGACE AS THE WORKPIECE CONTINUES TO MOVE TOWARD THE SCARFING UNIT, THEREBY FORMING A SLAG PUDDLE EXTENDING TRANSVERSELY ACROSS SAID SURFACE TO SUSTAIN SAID REACTION AS THE WORKPIECE CONTINUES TO MOVE, THEREAFTER DIRECTING A SHEET-LIKE STREAM OF HIGH-PRESSURE SCARFING OXYGEN AGAINST SAID SURFACE FOR SCARFING THE REMAINDER THEREOF WHIEL INCREASING THE SPEED OF SAID WORKPIECE TO A NORMAL SCARFING VALUE.
Claim 2
Dependent Claim
145 words
METHOD OF THERMOCHEMICALLY SCARFING THE SURFACE OF A MOVING STEEL WORKPIECE WHICH COMPRISES FEEDING THE WORKPIECE TOWARD A SCARFING UNIT AT A LOW RATE OF SPEED, FORMING FORWARD OF SAID SCARFING UNIT A SHEET-LIKE FLAME CONTAINING ADJUVANT IRON POWDER, DIRECTING SAID FLAME AT AN ACUTE DIHEDRAL ANGLE TO SAID SURFACE TO BE SCARFED SO AS TO STRIKE THE FORWARD END OF THE WORKPIECE, TO START A THERMOCHEMICAL REACTION ON SAID END WHICH WILL BE CARRIED OVER THE EDGE OF SAID SURFACE AND IMPINGE UPON SAID SURGACE AS THE WORKPIECE CONTINUES TO MOVE TOWARD THE SCARFING UNIT, THEREBY FORMING A SLAG PUDDLE EXTENDING TRANSVERSELY ACROSS SAID SURFACE TO SUSTAIN SAID REACTION AS THE WORKPIECE CONTINUES TO MOVE, THEREAFTER DIRECTING A SHEET-LIKE STREAM OF HIGH-PRESSURE SCARFING OXYGEN AGAINST SAID SURFACE FOR SCARFING THE REMAINDER THEREOF WHIEL INCREASING THE SPEED OF SAID WORKPIECE TO A NORMAL SCARFING VALUE.
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) | 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 |