US3004910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrolytic cutting, shaping and grinding
Assignee: Individual
•
Filing: 1957-12-03
•
Granted: 1961-10-17
•
Expires: 1977-12-03
Abstract
No abstract record available.
Inventors
- 👤 George F Keeleric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06; B23H5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
APPARATUS FOR SUPPLYING AND CONTROLLING ELECTRIC CURRENT FOR ELECTROLYTIC GRINDING COMPRISING IN COMBINATION PICK-UP MEANS RESPONSIVE TO A SIGNAL OF HIGH-FREQUENCY COMPONENTS ARISING IN THE ELECTROLYTIC CIRCUIT OF ELECTROLYTIC-GRINDING EQUIPMENT, FILTER MEANS FOR REJECTING LOW-FREQUENCY COMPONENTS IN SAID SIGNAL, MEANS FOR AMPLIFYING SAID SIGNAL, A POWER SOURCE OF ALTERNATING CURRENT, MEANS FOR RECTIFYING SAID ALTERNATING CURRENT TO PROVIDE A DIRECT-CURRENT POWER SOURCE FOR THE ELECTROLYTIC CIRCUIT OF THE ELECTROLYTIC-GRINDING EQUIPMENT, CONTROL MEANS INTERPOSED BETWEEN SAID POWER SOURCE OF ALTERNATING CURRENT AND SAID RECTIFIER, AND CIRCUIT CONNECTIONS
Claim 2
Dependent Claim
86 words
APPARATUS FOR SUPPLYING AND CONTROLLING ELECTRIC CURRENT FOR ELECTROLYTIC GRINDING COMPRISING IN COMBINATION PICK-UP MEANS RESPONSIVE TO A SIGNAL OF HIGH-FREQUENCY COMPONENTS ARISING IN THE ELECTROLYTIC CIRCUIT OF ELECTROLYTIC-GRINDING EQUIPMENT, FILTER MEANS FOR REJECTING LOW-FREQUENCY COMPONENTS IN SAID SIGNAL, MEANS FOR AMPLIFYING SAID SIGNAL, A POWER SOURCE OF ALTERNATING CURRENT, MEANS FOR RECTIFYING SAID ALTERNATING CURRENT TO PROVIDE A DIRECT-CURRENT POWER SOURCE FOR THE ELECTROLYTIC CIRCUIT OF THE ELECTROLYTIC-GRINDING EQUIPMENT, CONTROL MEANS INTERPOSED BETWEEN SAID POWER SOURCE OF ALTERNATING CURRENT AND SAID RECTIFIER, AND CIRCUIT CONNECTIONS
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |