US4007578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mower
Assignee: Oregon Tool Inc
•
Filing: 1975-12-18
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Granted: 1977-02-15
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Expires: 1995-12-18
Abstract
Abstract A carrier adapted for rotation about an axis so as to define a circular path at the outermost extension of the carrier. Anchoring means positioned on the carrier at spaced locations along said circular path. A flexible elongate member extending between and fastened to said anchoring means. At least one cutter mounted to the elongate member between a pair of the anchoring means. Said cutters extending outwardly of the circular path and maintained in said extended positions for impact cutting at least partially by the centrifugal force produced by rotation of the carrier. Said flexible member permitting rearward or inward flexing to withdraw the cutter behind the path defined by the carrier upon striking a solid object, e.g. a rock.
Inventors
- 👤 Eugene C. Borstel, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:03
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/83; A01D34/412; A01D34/63; A01D34/73; A01D34/736
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A mower including a carrier adapted for rotation about an axis defining a circular path at the outermost extension of the carrier, a flexible elongated member having at least one cutter fastened thereto, and mounting means mounting the elongated member to the carrier at spaced locations substantially in the plane defined by said circular path with the cutter positioned between said locations and extended outwardly of the circular path, and further including guard means comprised of a protective edge adjacent to and inwardly of the outwardly extended cutter whereby upon impact of the cutter with a hard object the flexible elongated member flexes inwardly to withdraw the cutter behind the protective edge.
Claim 2
Dependent Claim
112 words
A mower including a carrier adapted for rotation about an axis defining a circular path at the outermost extension of the carrier, a flexible elongated member having at least one cutter fastened thereto, and mounting means mounting the elongated member to the carrier at spaced locations substantially in the plane defined by said circular path with the cutter positioned between said locations and extended outwardly of the circular path, and further including guard means comprised of a protective edge adjacent to and inwardly of the outwardly extended cutter whereby upon impact of the cutter with a hard object the flexible elongated member flexes inwardly to withdraw the cutter behind the protective edge.
Claim 3
Dependent Claim
15 words
A mower as defined in claim 1 wherein the flexible elongated member is a V-belt.
Claim 4
Dependent Claim
27 words
A mower as defined in claim 1 wherein the carrier is a disc shaped collar and the mounting means are positioned on the periphery of the collar.
Claim 5
Dependent Claim
40 words
A mower as defined in claim 3 wherein the elongated member is an endless loop flexible V-belt adapted to fit the periphery of the disc and fixed by said mounting means at spaced locations along the periphery of the collar.
Claim 6
Dependent Claim
34 words
A mower as defined in claim 4 wherein the mounting means includes a holder fixed to the collar and a bolt extended through the holder and the belt and removably secured by a nut.
References Cited (Backward Citations)
US2963844A
Cited
US3177640A
Cited
US3395522A
Cited
US3834138A
Cited
US3884019A
Cited
US3895440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |