Patent US3393333A successfully refreshed from Google Patents.
Patent US3306149A successfully refreshed from Google Patents.
US3306149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cutter
Assignee: Dienes Werke fuer Maschinenteile GmbH and Co KG
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Filing: 1965-01-12
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Granted: 1967-02-28
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Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 John Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:57
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/0006; B26D2001/002; B26D2001/0046; B26D2001/0053; B26D2001/0066; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A ROTARY CUTTER COMPRISING: A CIRCULAR DISC HAVING A CUTTING EDGE LOCATED ALONG THE OUTER PERIPHERY THEREOF AND PROVIDED WITH AN AXIALLY EXTENDING CENTRAL APERTURE; A REINFORCING AND SUPPORT HUB FORMED OF A PLASTIC BASE MATERIAL HAVING DRY LUBRICANT CHARACTERISTICS INCLUDING A SUBSTANTIALLY TUBULAR PORTION DISPOSED COAXIALLY WITH SAID APERTURE AND HAVING A RADIALLY EXTENDING FLANGE OF UNIFORM THICKNESS AND WITH A FLAT FRONT FACE AT EACH AXIAL END OF SAID CYLINDRICAL PORTION AND BEING INTEGRALLY UNITED THEREWITH FOR CLAMPING SAID DISC BETWEEN SAID FLANGES AND TO PROVIDE A DRY LUBRICANT BEARING SURFACE ON EACH SIDE OF SAID DISC.
Claim 2
Dependent Claim
99 words
A ROTARY CUTTER COMPRISING: A CIRCULAR DISC HAVING A CUTTING EDGE LOCATED ALONG THE OUTER PERIPHERY THEREOF AND PROVIDED WITH AN AXIALLY EXTENDING CENTRAL APERTURE; A REINFORCING AND SUPPORT HUB FORMED OF A PLASTIC BASE MATERIAL HAVING DRY LUBRICANT CHARACTERISTICS INCLUDING A SUBSTANTIALLY TUBULAR PORTION DISPOSED COAXIALLY WITH SAID APERTURE AND HAVING A RADIALLY EXTENDING FLANGE OF UNIFORM THICKNESS AND WITH A FLAT FRONT FACE AT EACH AXIAL END OF SAID CYLINDRICAL PORTION AND BEING INTEGRALLY UNITED THEREWITH FOR CLAMPING SAID DISC BETWEEN SAID FLANGES AND TO PROVIDE A DRY LUBRICANT BEARING SURFACE ON EACH SIDE OF SAID DISC.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |