Patent US3148446A successfully refreshed from Google Patents.
US3148446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing dies and rolls
Assignee: Individual
•
Filing: 1961-05-22
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Granted: 1964-09-15
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Michael J Celovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
B; B23; B23H; B23H1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49703; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A METHOD OF FORMING A PAIR OF TUBE REDUCING METAL ROLLS WHILE IN A HEAT TREATED HARDENED STATE WHICH INCLUDES THE STEPS OF DISPOSING A PAIR OF ROLLS IN SIDE-BYSIDE SPACED RELATION IN A FLUID BATH, PROVIDING A TAPERED ELECTRICAL DISCHARGE ELECTRODE HAVING A CONFIGURATION CORRESPONDING TO THE SHAPE OF THE TAPERED GROOVES TO BE MACHINED IN THE GROOVES AND ALIGNING THE ELECTRODE IN THE GAP BETWEEN THE SPACED ROLLS WHILE CONTEMPORANEOUSLY ROTATING THE ROLLS IN AN ARCUATE PATH OF ROTATION ON A SIDE OF THE ELECTRODE ESTABLISHING A CUTTING ZONE ALONG THE ROLL SURFACES ON OPPOSITE SIDES OF THE ELECTRODE, THE TAPERED ELECTRODE CAUSING ELECTRICAL DISCHARGE BOMBARDMENT OF THE SURFACES OF THE ROLLS WHILE A CONSTANT FLOW OF FLUID IS DIRECTED ACROSS THE CUTTING ZONE THEREBY MACHINING TAPERED
Claim 2
Dependent Claim
130 words
IN A METHOD OF FORMING A PAIR OF TUBE REDUCING METAL ROLLS WHILE IN A HEAT TREATED HARDENED STATE WHICH INCLUDES THE STEPS OF DISPOSING A PAIR OF ROLLS IN SIDE-BYSIDE SPACED RELATION IN A FLUID BATH, PROVIDING A TAPERED ELECTRICAL DISCHARGE ELECTRODE HAVING A CONFIGURATION CORRESPONDING TO THE SHAPE OF THE TAPERED GROOVES TO BE MACHINED IN THE GROOVES AND ALIGNING THE ELECTRODE IN THE GAP BETWEEN THE SPACED ROLLS WHILE CONTEMPORANEOUSLY ROTATING THE ROLLS IN AN ARCUATE PATH OF ROTATION ON A SIDE OF THE ELECTRODE ESTABLISHING A CUTTING ZONE ALONG THE ROLL SURFACES ON OPPOSITE SIDES OF THE ELECTRODE, THE TAPERED ELECTRODE CAUSING ELECTRICAL DISCHARGE BOMBARDMENT OF THE SURFACES OF THE ROLLS WHILE A CONSTANT FLOW OF FLUID IS DIRECTED ACROSS THE CUTTING ZONE THEREBY MACHINING TAPERED
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |