US3141269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrading article
Assignee: Merit Products Inc
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Filing: 1961-11-01
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Granted: 1964-07-21
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 Block Aleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:34
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/04; B24D13/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
157 words
IN A FLAP-TYPE ABRASIVE WHEEL WHEREIN A ROTARY HUB STRUCTURE HAS A PLURALITY OF CIRCUMFERENTIALLY SPACED TRANSVERSELY EXTENDING SLOTS WITH THE RADIALLY OUTWARD OPEN PORTIONS OF THE SLOTS OF NARROWED WIDTH, A PLURALITY OF DISPOSABLE ABRASIVE UNITS FOR MOUNTING IN SAID SLOTS RESPECTIVELY, EACH OF SAID UNITS COMPRISING: (A) A PACK OF FLEXIBLE ABRASIVE LEAVES WITH A BASE END FOR SEATING IN ONE OF SAID SLOTS; (B) SPACER MEANS INTERPOSED BETWEEN THE LEAVES OF SAID PACK AT SAID BASE END AND ENLARGING THE BASE END TO A GREATER WIDTH THAN SAID NARROWED WIDTH OF THE SLOT AND DISPOSED WITHIN THE SLOTS IN THE ROTARY HUB STRUCTURE; AND (C) MECHANICAL FASTENING MEANS EXTENDING THROUGH THE BASE END OF THE PACK AND THE INSERTED SPACER MEANS AT SUBSTANTIALLY THE POSITION OF THE NARROWED WIDTHS OF THE SLOTS IN THE ROTARY HUB STRUCTURE, SAID FASTENING MEANS ENGAGING THE LEAVES OF THE PACK FOR UNIFYING THE BASE END OF THE PACK.
References Cited (Backward Citations)
US2843980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |