Patent US3340682A successfully refreshed from Google Patents.
US3340682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yieldable mower blade
Assignee: Day International Corp
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Filing: 1966-06-16
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Granted: 1967-09-12
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Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:55
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A ROTARY MOWER BLADE HAVING AT LEAST ONE ARM, SAID BLADE COMPRISED OF AN ELASTOMER AND A RELATIVELY NONELASTIC MEMBER, SAID NONELASTIC MEMBER BEING EMBEDDED IN SAID ELASTOMER AND EXTENDING SUBSTANTIALLY THROUGHOUT ITS LENGTH FOR RESISTING ELONGATION OF SAID BLADE WHEN THE SAME IS SUBJECTED TO CENTRIFUGAL FORCE, SAID BLADE HAVING A PLURALITY OF INTEGRALLY FORMED AUXILIARY CUTTERS EXTENDING FROM THE UPPER AND LOWER SURFCES OF EACH ARM AND COMPOSED ENTIRELY OF SAID ELASTOMER.
Claim 2
Dependent Claim
74 words
A ROTARY MOWER BLADE HAVING AT LEAST ONE ARM, SAID BLADE COMPRISED OF AN ELASTOMER AND A RELATIVELY NONELASTIC MEMBER, SAID NONELASTIC MEMBER BEING EMBEDDED IN SAID ELASTOMER AND EXTENDING SUBSTANTIALLY THROUGHOUT ITS LENGTH FOR RESISTING ELONGATION OF SAID BLADE WHEN THE SAME IS SUBJECTED TO CENTRIFUGAL FORCE, SAID BLADE HAVING A PLURALITY OF INTEGRALLY FORMED AUXILIARY CUTTERS EXTENDING FROM THE UPPER AND LOWER SURFCES OF EACH ARM AND COMPOSED ENTIRELY OF SAID ELASTOMER.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |