US3343351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible lawn mower blade
Assignee: Day International Corp
•
Filing: 1966-09-14
•
Granted: 1967-09-26
•
Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Abraham L Freedlander
- 👤 Robert E Matthews
- 👤 Wayne C Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A LAWN MOWER HAVING A ROTATABLE SHAFT, A CUTTING BLADE MOUNTED ON SAID SHAFT COMPOSED ENTIRELY OF A FLEXIBLE URETHANE ELASTOMER, SAID BLADE HAVING OUTWARDLY EXTENDING ARMS WITH CUTTING EDGES AND NON-CUTTING SURFACES, SAID ARMS HAVING MEANS ON AT LEAST ONE NON-CUTTING SURFACE FOR INCREASING THEIR FLEXIBILITY.
Claim 2
Dependent Claim
48 words
IN A LAWN MOWER HAVING A ROTATABLE SHAFT, A CUTTING BLADE MOUNTED ON SAID SHAFT COMPOSED ENTIRELY OF A FLEXIBLE URETHANE ELASTOMER, SAID BLADE HAVING OUTWARDLY EXTENDING ARMS WITH CUTTING EDGES AND NON-CUTTING SURFACES, SAID ARMS HAVING MEANS ON AT LEAST ONE NON-CUTTING SURFACE FOR INCREASING THEIR FLEXIBILITY.
References Cited (Backward Citations)
US3156082A
Cited
US3176455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |