Patent US3127939A successfully refreshed from Google Patents.
US3127939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn trimmer
Assignee: Individual
•
Filing: 1961-12-18
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Granted: 1964-04-07
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Rink John Denter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:58
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A TRIMMER FOR TRIMMING LAWN GROWTH AROUND A CIRCULAR LAWN SPRINKLER HEAD, A CYLINDRICAL MEMBER HAVING A PLURALITY OF PLANAR CUTTING BLADES EXTENDING INWARDLY FROM THE INNER CIRCUMFERENCE OF SAID CYLINDRICAL MEMBER IN A DIRECTION SUBSTANTIALLY NORMAL TO THE ADJOINING PORTION OF THE INNER WALL OF SAID MEMBER, THE EDGES OF SAID BLADES ADJACENT TO SAID INNER CIRCUMFERENCE EXTENDING ALONG AXES SUBSTANTIALLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL MEMBER, SAID BLADES BEING IN THE SHAPE OF A RIGHT TRIANGLE, THE HYPOTENUSE OF SAID TRIANGLE CONVERGING WITH SAID INNER WALL IN A DIRECTION TOWARDS THE BOTTOM END OF SAID MEMBER, SAID BLADES FURTHER BEING SPACED SUBSTANTIALLY
Claim 2
Dependent Claim
108 words
IN A TRIMMER FOR TRIMMING LAWN GROWTH AROUND A CIRCULAR LAWN SPRINKLER HEAD, A CYLINDRICAL MEMBER HAVING A PLURALITY OF PLANAR CUTTING BLADES EXTENDING INWARDLY FROM THE INNER CIRCUMFERENCE OF SAID CYLINDRICAL MEMBER IN A DIRECTION SUBSTANTIALLY NORMAL TO THE ADJOINING PORTION OF THE INNER WALL OF SAID MEMBER, THE EDGES OF SAID BLADES ADJACENT TO SAID INNER CIRCUMFERENCE EXTENDING ALONG AXES SUBSTANTIALLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL MEMBER, SAID BLADES BEING IN THE SHAPE OF A RIGHT TRIANGLE, THE HYPOTENUSE OF SAID TRIANGLE CONVERGING WITH SAID INNER WALL IN A DIRECTION TOWARDS THE BOTTOM END OF SAID MEMBER, SAID BLADES FURTHER BEING SPACED SUBSTANTIALLY
References Cited (Backward Citations)
US799880A
Cited
FR669987A
Cited
US1866073A
Cited
US1977017A
Cited
US2263531A
Cited
US2670537A
Cited
US2691823A
Cited
US2809864A
Cited
US2764926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |