US3219569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic metal removal apparatus
Assignee: Rolls Royce PLC
•
Filing: 1961-06-02
•
Granted: 1965-11-23
•
Expires: 1981-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wilkinson Bernard Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:19
CPC Classifications
B; B23; B23H; B23H3/00; B23H3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN ELECTROLYTIC MAACHINING APPARATUS, INCLUDING A SHAPING ELECTRODE COMPRISING A SOLID METAL BODY HAVING AN EXTERNAL FORMING SURFACE WHICH IS COMPLEMENTARY IN SHAPE TO A PREDETERMINED SHAPE IT IS DESIRED TO PRODUCE ON A WORKPIECE, AND A HOLLOW ELECTROLYTE CHUTE PROVIDING A PASSAGE THERETHROUG FOR A FLOW OF ELECTROLYTE, SAID CHUTE BEING FINALLY ATTACHED AS ITS DOWNSTREAM END TO THE BODY AND MOVABLE AS A UNIT THEREWITH WITH THE DOWNSTREAM END OF SAID CHUTE INCLINED TOWARDS THE BODY, AND PROVIDING AN ELECTROLYTE DISCHARGE SLIT IMMEDIATELY ADJACENT SAID BODY, WHICH SLIT BORDERS AND FACES ACROSS SAID FORMING SURFACE SO THAT ELECTROLYTE FLOWING THROUGH THE CHUTE DISCHARGES FROM SAID SLIT IN A STREAM ACROSS SAID FORMING SURFACE, THE STREAM AT LEAST INITIALLY FLOWING TANGENTIALLY IN CONTACT WITH SAID FORMING SURFACE, AND MEANS FOR SUPPORTING A WORKPIECE IN JUXTAPOSITION TO SAID FORMING SURFACE.
Claim 2
Dependent Claim
140 words
AN ELECTROLYTIC MAACHINING APPARATUS, INCLUDING A SHAPING ELECTRODE COMPRISING A SOLID METAL BODY HAVING AN EXTERNAL FORMING SURFACE WHICH IS COMPLEMENTARY IN SHAPE TO A PREDETERMINED SHAPE IT IS DESIRED TO PRODUCE ON A WORKPIECE, AND A HOLLOW ELECTROLYTE CHUTE PROVIDING A PASSAGE THERETHROUG FOR A FLOW OF ELECTROLYTE, SAID CHUTE BEING FINALLY ATTACHED AS ITS DOWNSTREAM END TO THE BODY AND MOVABLE AS A UNIT THEREWITH WITH THE DOWNSTREAM END OF SAID CHUTE INCLINED TOWARDS THE BODY, AND PROVIDING AN ELECTROLYTE DISCHARGE SLIT IMMEDIATELY ADJACENT SAID BODY, WHICH SLIT BORDERS AND FACES ACROSS SAID FORMING SURFACE SO THAT ELECTROLYTE FLOWING THROUGH THE CHUTE DISCHARGES FROM SAID SLIT IN A STREAM ACROSS SAID FORMING SURFACE, THE STREAM AT LEAST INITIALLY FLOWING TANGENTIALLY IN CONTACT WITH SAID FORMING SURFACE, AND MEANS FOR SUPPORTING A WORKPIECE IN JUXTAPOSITION TO SAID FORMING SURFACE.
References Cited (Backward Citations)
GB335003A
Cited
US2844531A
Cited
US2909641A
Cited
US3058895A
Cited
US2927191A
Cited
US3002907A
Cited
US3019178A
Cited
US3120482A
Cited
US3095364A
Cited
US3041265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |