US3154897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spliced coated abrasive belt
Assignee: 3M Co
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Filing: 1961-11-27
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Granted: 1964-11-03
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Robert N Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/06; Y; Y10; Y10T; Y10T24/00; Y10T24/16; Y10T24/1664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A SPLICED STRIP OF FLEXIBLE ABRASIVE-COATED SHEET MATERIAL COMPRISING A BACKING SHEET HAVING FIRST AND SECOND SURFACES AND ABRASIVE GRAINS FIRMLY AFFIXED TO THE FIRST SURFACE THEREOF BY A BINDER ADHESIVE, AND HAVING A JOINT UNITING TWO COMPLEMENTARY ABUTTINGLY JUXTAPOSED ENDS, THE SHEET MATERIAL IMMEDIATELY ADJACENT EACH OF SAID ENDS BEING CONTOURED IN SUCH A MANNER THAT SAID FIRST SURFACE IS ESSENTIALLY UNDISTURBED AND THAT SAID SECOND SURFACE IS TAPERED TOWARD EACH OF SAID ENDS TO DEFINE A SINGLE HOLLOWED-OUT SPACE ACROSS THE ENTIRE WIDTH OF SAID STRIP, SAID SPACE BEING OCCUPIED BY A THIN, STRONG FLEXIBLE TEARRESISTANT COMPOSITE BACKUP STRIP, SAID STRIP COMPRISING
Claim 2
Dependent Claim
104 words
A SPLICED STRIP OF FLEXIBLE ABRASIVE-COATED SHEET MATERIAL COMPRISING A BACKING SHEET HAVING FIRST AND SECOND SURFACES AND ABRASIVE GRAINS FIRMLY AFFIXED TO THE FIRST SURFACE THEREOF BY A BINDER ADHESIVE, AND HAVING A JOINT UNITING TWO COMPLEMENTARY ABUTTINGLY JUXTAPOSED ENDS, THE SHEET MATERIAL IMMEDIATELY ADJACENT EACH OF SAID ENDS BEING CONTOURED IN SUCH A MANNER THAT SAID FIRST SURFACE IS ESSENTIALLY UNDISTURBED AND THAT SAID SECOND SURFACE IS TAPERED TOWARD EACH OF SAID ENDS TO DEFINE A SINGLE HOLLOWED-OUT SPACE ACROSS THE ENTIRE WIDTH OF SAID STRIP, SAID SPACE BEING OCCUPIED BY A THIN, STRONG FLEXIBLE TEARRESISTANT COMPOSITE BACKUP STRIP, SAID STRIP COMPRISING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |