Patent US3655937A successfully refreshed from Google Patents.
US3655937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement of at least two non-storage pulse generators for electro-erosion machining
Assignee: Agie Charmilles SA
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Filing: 1970-07-13
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Granted: 1972-04-11
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Expires: 1990-07-13
Abstract
Abstract A circuit arrangement for electro-erosion machining operations, comprising at least two non-storing pulse generator means for the electro-erosion machining operations. A controlled timing generator means serves to generate control pulses for all of said pulse generators. There are also provided current circuit means for the time-control of the control pulses delivered by the controlled timing generator means, one such current circuit means being arranged at the input for the control pulses of each of said pulse generator means. There also are provided electroerosion current circuits, with pulse generators being electrically arranged in said electro-erosion current circuits and being provided with electronic power switches controlled by said control pulses, said electro-erosion current circuits being coupled in such a number in parallel to the work gap as there are required working pulses of different amplitudes for producing a working spark.
Inventors
- 👤 Werner Ullmann
- 👤 Costantino Tadini
- 👤 Ehsan Salim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:12
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022; B23H2300/00; B23H2300/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A circuit arrangement for electro-erosion machining operations across a work gap, comprising: a. at least two non-storing pulse generator means for the electro-erosion machining operations; b. a controlled timing generator means for generating control pulses for all of said pulse generator means; c. current circuit means for the time-control of the control pulses delivered by the controlled timing generator means, one such current circuit means being arranged at the input for the control pulses of each of said pulse generator means; and d. electro-erosion current circuit means, said pulse generator means being electrically coupled with said electro-erosion current circuit means, said pulse generator means being provided with electronic power switches controlled by said control pulses, said electro-erosion current circuit means being coupled in such number in parallel to the work gap as there are required working pulses of different amplitudes for producing a working spark.
Claim 2
Dependent Claim
145 words
A circuit arrangement for electro-erosion machining operations across a work gap, comprising: a. at least two non-storing pulse generator means for the electro-erosion machining operations; b. a controlled timing generator means for generating control pulses for all of said pulse generator means; c. current circuit means for the time-control of the control pulses delivered by the controlled timing generator means, one such current circuit means being arranged at the input for the control pulses of each of said pulse generator means; and d. electro-erosion current circuit means, said pulse generator means being electrically coupled with said electro-erosion current circuit means, said pulse generator means being provided with electronic power switches controlled by said control pulses, said electro-erosion current circuit means being coupled in such number in parallel to the work gap as there are required working pulses of different amplitudes for producing a working spark.
Claim 3
Dependent Claim
26 words
The circuit arrangement as defined in claim 1, wherein said current circuit means are arranged in parallel with the output of said controlled timing generator meaNs.
Claim 4
Dependent Claim
26 words
The circuit arrangement as defined in claim 1, wherein said current circuit means are connected in series with the output of said controlled timing generator means.
Claim 5
Dependent Claim
18 words
The circuit arrangement as defined in claim 1, further including monitoring means for influencing said current circuit means.
Claim 6
Dependent Claim
52 words
The circuit arrangement as defined in claim 1, wherein there are provided at least three pulse generator means together with their electro-erosion current circuit means which are connected parallel to the work gap and form a generator group, so that the working spark is composed of three work pulses of different time-duration.
References Cited (Backward Citations)
US2895080A
Cited
FR1535301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |