Patent US3320732A successfully refreshed from Google Patents.
US3320732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting blade assembly for rotary lawn mowers and the like
Assignee: Individual
•
Filing: 1965-02-17
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Granted: 1967-05-23
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Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:44
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D34/736; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A ROTARY MOWER CUTTER BLADE ASSEMBLY COMPRISING IN COMBINATION A SUBSTANTIALLY CIRCULAR DISC ADAPTED TO TURN WITH THE DRIVEN SHAFT OF SAID MOWER AND HAVING AT LEAST A PAIR OF DIAMETRICALLY OPPOSED OPENINGS, BLADE ANCHORING BRACKETS SECURED TO SAID DISC ADJACENT SAID OPENINGS AND INCLUDING U-SHAPED PORTIONS ELEVATED FROM ONE FACE OF THE DISC AND SUBSTANTIALLY ALIGNED WITH OUTER CURVED EDGES OF THE OPENINGS, AND BLADES HAVING BODY PORTIONS EXTENDING BETWEEN THE DISC AND SAID ELEVATED U-SHAPED PORTIONS AND HEADS AT THE INNER ENDS OF THE BLADES ROTATABLY ENGAGING THE OPENINGS AND THE ELEVATED U-SHAPED PORTIONS, WHEREBY THE BLADES ARE FREE TO PIVOT UPON THE DISC AND ARE ANCHORED FIRMLY THERETO FOR ROTATION THEREWITH.
Claim 2
Dependent Claim
114 words
A ROTARY MOWER CUTTER BLADE ASSEMBLY COMPRISING IN COMBINATION A SUBSTANTIALLY CIRCULAR DISC ADAPTED TO TURN WITH THE DRIVEN SHAFT OF SAID MOWER AND HAVING AT LEAST A PAIR OF DIAMETRICALLY OPPOSED OPENINGS, BLADE ANCHORING BRACKETS SECURED TO SAID DISC ADJACENT SAID OPENINGS AND INCLUDING U-SHAPED PORTIONS ELEVATED FROM ONE FACE OF THE DISC AND SUBSTANTIALLY ALIGNED WITH OUTER CURVED EDGES OF THE OPENINGS, AND BLADES HAVING BODY PORTIONS EXTENDING BETWEEN THE DISC AND SAID ELEVATED U-SHAPED PORTIONS AND HEADS AT THE INNER ENDS OF THE BLADES ROTATABLY ENGAGING THE OPENINGS AND THE ELEVATED U-SHAPED PORTIONS, WHEREBY THE BLADES ARE FREE TO PIVOT UPON THE DISC AND ARE ANCHORED FIRMLY THERETO FOR ROTATION THEREWITH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |