Patent US3724987A successfully refreshed from Google Patents.
Patent US3277267A successfully refreshed from Google Patents.
US3277267A
Expired / Lapsed
US
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Method and apparatus for treating electrically conductive surfaces
Assignee: Individual
•
Filing: 1965-09-20
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Granted: 1966-10-04
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Blaszkowski Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:53
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C22; C22F; C22F1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
IN A METHOD FOR TREATING A HEAT FUSIBLE ELECTRICALLY CONDUCTIVE SURFACE TO IMPART HARDNESS THERETO, THE STEP COMPRISING SLIDING AN ELECTRODE OF A HARD HEAT FUSIBLE MATERIAL OVER THE AREAS OF SAID SURFACE DESIRED TO BE TREATED WHILE APPLYING SHORT DURATION PULSES OF ELECTRICAL ENERGY BETWEEN SAID ELECTRODE AND SAID SURFACE, SAID ELECTRODE BEING SLID OVER SAID SURFACE AT SUCH SPEED AND BEING BIASED AGAINST SAID SURFACE AT SUCH PRESSURE AS TO RESULT IN LUMINOUS SHORT DURATION, INTENSE HEAT CREATING DISCHARGES OF ELECTRIC CURRENT BETWEEN SAID ELECTRODE AND SAID SURFACE SUFFICIENT TO PROVIDE LOCALIZED FUSION OF SAID SURFACE AND SAID ELECTRODE MATERIAL IN THE AREAS THEREOF IN CONTACT, SAID MOTION AND SAID DISCHARGES BEING CONTINUED UNTIL THE DESIRED HARDNESS IS IMPARTED TO SAID AREAS.
References Cited (Backward Citations)
US416873A
Cited
US1097895A
Cited
US1298590A
Cited
US1217431A
Cited
US1498167A
Cited
US1533236A
Cited
US1460137A
Cited
US1866538A
Cited
US1817092A
Cited
US1791968A
Cited
US1784015A
Cited
GB462374A
Cited
US2299747A
Cited
US2204545A
Cited
US2490302A
Cited
US2485361A
Cited
US2481163A
Cited
US2844498A
Cited
US2885534A
Cited
US2813192A
Cited
US2908801A
Cited
US2945936A
Cited
US2923808A
Cited
US3097291A
Cited
US3098150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |