US3329596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrolytically machining branch passages providing communication betweenmain passages in a metal article
Assignee: General Electric Co
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Filing: 1966-03-31
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Granted: 1967-07-04
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Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Ronald C Abt
- 👤 Jr William L Eisberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:07
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/14; B23H9/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF PRODUCING BY ELECTROLYTIC MATERIAL REMOVAL A BRANCH PASSAGE EMANATING FROM AN EXISTING PASSAGE IN A METAL ARTICLE, THE BRANCH PASSAGE HAVING A DIAMETER IN THE RANGE OF FROM ABOUT 0.01 TO ABOUT 0.06 INCH BEING LOCATED ENTIRELY WITHIN THE ARTICLE INTERMEDIATE THAT ENDS OF THE EXISTING PASSAGE, COMPRISING THE STEPS OF: HOLDING STATIONARY A HOLLOW ELECTRODE WITHIN THE EXISTING PASSAGE IN A WORKPEICE; ELECTRICALLY ISOLATING SUBSTANTIALLY THE ENTIRE OUTER SURFACE OF SAID HOLLOW ELECTRODE FROM SAID WORKPIECE; IMPRESSING AN ELECTRIC POTENTIAL ACROSS SAID GAP TO MAKE SAID METAL ARTICLE PREDOMINANTLY ANODIC AND SAID ELECTRODE PREDOMINANTLY CATHODIC; WHILE DIRECTING AN UNWAVERING STREAM OF ELECTROLYTE AT A PRESSURE IN THE RANGE OF FROM ABOUT 14 POUNDS PER SQUARE INCH GAUGE TO ABOUT 25 POUNDS PER SQUARE INCH GAUGE FROM AN OPENING IN A SIDE WALL OF THE ELECTRODE ACROSS A GAP BETWEEN THE WORKPEICE AND THE ELECTRODE OF LESS THAN ABOUT 0.02 INCH, WHEREBY MATERIAL FROM SAID ARTICLE IS REMOVED AND SAID BRANCH PASSAGE IS FORMED.
Claim 2
Independent Claim
167 words
A METHOD OF PRODUCING BY ELECTROLYTIC MATERIAL REMOVAL A BRANCH PASSAGE EMANATING FROM AN EXISTING PASSAGE IN A METAL ARTICLE, THE BRANCH PASSAGE HAVING A DIAMETER IN THE RANGE OF FROM ABOUT 0.01 TO ABOUT 0.06 INCH BEING LOCATED ENTIRELY WITHIN THE ARTICLE INTERMEDIATE THAT ENDS OF THE EXISTING PASSAGE, COMPRISING THE STEPS OF: HOLDING STATIONARY A HOLLOW ELECTRODE WITHIN THE EXISTING PASSAGE IN A WORKPEICE; ELECTRICALLY ISOLATING SUBSTANTIALLY THE ENTIRE OUTER SURFACE OF SAID HOLLOW ELECTRODE FROM SAID WORKPIECE; IMPRESSING AN ELECTRIC POTENTIAL ACROSS SAID GAP TO MAKE SAID METAL ARTICLE PREDOMINANTLY ANODIC AND SAID ELECTRODE PREDOMINANTLY CATHODIC; WHILE DIRECTING AN UNWAVERING STREAM OF ELECTROLYTE AT A PRESSURE IN THE RANGE OF FROM ABOUT 14 POUNDS PER SQUARE INCH GAUGE TO ABOUT 25 POUNDS PER SQUARE INCH GAUGE FROM AN OPENING IN A SIDE WALL OF THE ELECTRODE ACROSS A GAP BETWEEN THE WORKPEICE AND THE ELECTRODE OF LESS THAN ABOUT 0.02 INCH, WHEREBY MATERIAL FROM SAID ARTICLE IS REMOVED AND SAID BRANCH PASSAGE IS FORMED.
References Cited (Backward Citations)
US3058895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |