US2997437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive machine and method
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1958-09-09
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Granted: 1961-08-22
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Expires: 1978-09-09
Abstract
No abstract record available.
Inventors
- 👤 Richard A Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/16; B24B21/165; B24B19/00; B24B19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN AN ABRADING MACHINE, AN ABRASIVE BELT, MEANS FOR SUPPORTING SAID BELT IN OPERATIVE RELATION TO A WORKPIECE, MEANS FOR MOVING SAID BELT PROGRESSIVELY OVER SAID SUPPORTING MEANS, AND MEANS FOR PRODUCING AN ELECTROLYTIC CURRENT AT THE REGION OF OPERATION OF SAID BELT WITH RESPECT TO SAID WORKPIECE FOR ELECTROLYTICALLY REMOVING MATERIAL FROM THE WORKPIECE, SAID BELT BEING OF OPEN MESH CONFIGURATION COATED WITH AN ABRASIVE MATERIAL
Claim 2
Dependent Claim
67 words
IN AN ABRADING MACHINE, AN ABRASIVE BELT, MEANS FOR SUPPORTING SAID BELT IN OPERATIVE RELATION TO A WORKPIECE, MEANS FOR MOVING SAID BELT PROGRESSIVELY OVER SAID SUPPORTING MEANS, AND MEANS FOR PRODUCING AN ELECTROLYTIC CURRENT AT THE REGION OF OPERATION OF SAID BELT WITH RESPECT TO SAID WORKPIECE FOR ELECTROLYTICALLY REMOVING MATERIAL FROM THE WORKPIECE, SAID BELT BEING OF OPEN MESH CONFIGURATION COATED WITH AN ABRASIVE MATERIAL
References Cited (Backward Citations)
CA518310A
Cited
US2071563A
Cited
FR854224A
Cited
US2332329A
Cited
US2526423A
Cited
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Cited
US2587603A
Cited
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Cited
US2826540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |