US3277267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating electrically conductive surfaces
Assignee: Individual
•
Filing: 1965-09-20
•
Granted: 1966-10-04
•
Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Blaszkowski Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:18
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.
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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 |