US3086346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power mower safety device
Assignee: Individual
•
Filing: 1961-01-23
•
Granted: 1963-04-23
•
Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 William A Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:50
CPC Classifications
A; A01; A01D; A01D75/00; A01D75/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A POWER OPERATED MOWER HAVING A VERTICALLY DISPOSED ROTATABLE SHAFT, THE COMBINATION WITH A BLADE CARRIER PLATE SECURED TO THE LOWER END OF SAID SHAFT AND ROTATABLE THEREWITH, OF A BLADE SUPPORTING ARM EXTENDING RADIALLY OF SAID SHAFT AND PIVOTALLY MOUNTED ON SAID PLATE FOR MOVEMENT ABOUT AN AXIS NORMAL TO THE AXIS OF SAID SHAFT, MEANS ROTATABLE WITH AND DISPOSED BETWEEN SAID PLATE AND THE UPPER END OF SAID SHAFT, SAID MEANS BEING MOVABLE LONGITUDINALLY OF SAID SHAFT AND OPERATIVELY CONNECTED WITH SAID ARM TO MOVE SAID ARM ABOUT SAID PIVOT AXIS, A COIL SPRING DISPOSED ABOUT SAID SHAFT AND BETWEEN SAID PLATE AND MEANS, SAID SPRING BIASING MEANS TO POSITION SAID ARM AND SAID BLADE ABOVE THEIR NORMAL CUTTING POSITION, AND MANUALLY OPERABLE MEANS FOR MOVING SAID FIRST MENTIONED MEANS AGAINST THE BAIS OF SAID SPRING AND MAINTAINING SAID BLADE IN ITS NORMAL CUTTING POSITION.
Claim 2
Dependent Claim
148 words
IN A POWER OPERATED MOWER HAVING A VERTICALLY DISPOSED ROTATABLE SHAFT, THE COMBINATION WITH A BLADE CARRIER PLATE SECURED TO THE LOWER END OF SAID SHAFT AND ROTATABLE THEREWITH, OF A BLADE SUPPORTING ARM EXTENDING RADIALLY OF SAID SHAFT AND PIVOTALLY MOUNTED ON SAID PLATE FOR MOVEMENT ABOUT AN AXIS NORMAL TO THE AXIS OF SAID SHAFT, MEANS ROTATABLE WITH AND DISPOSED BETWEEN SAID PLATE AND THE UPPER END OF SAID SHAFT, SAID MEANS BEING MOVABLE LONGITUDINALLY OF SAID SHAFT AND OPERATIVELY CONNECTED WITH SAID ARM TO MOVE SAID ARM ABOUT SAID PIVOT AXIS, A COIL SPRING DISPOSED ABOUT SAID SHAFT AND BETWEEN SAID PLATE AND MEANS, SAID SPRING BIASING MEANS TO POSITION SAID ARM AND SAID BLADE ABOVE THEIR NORMAL CUTTING POSITION, AND MANUALLY OPERABLE MEANS FOR MOVING SAID FIRST MENTIONED MEANS AGAINST THE BAIS OF SAID SPRING AND MAINTAINING SAID BLADE IN ITS NORMAL CUTTING POSITION.
References Cited (Backward Citations)
US2551817A
Cited
US2483683A
Cited
US2740249A
Cited
US2707362A
Cited
US2697323A
Cited
US2993329A
Cited
US2985992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |