US3916607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary blade rake
Assignee: Individual
•
Filing: 1974-04-18
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Granted: 1975-11-04
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Expires: 1994-04-18
Abstract
Abstract In a preferred embodiment of the invention there is provided a rotary blade combination in the nature of a rake-accessory, including the rotary blade having opposite end portions thereof with its upper and lower flat faces perforated by two pairs of substantially parallel-spaced apertures, the pair of apertures being located with the first one thereof about centrally between leading and following edges of the blade, and the second thereof being in juxtaposition to the following edge of the blade, and mounted in the apertures there being the rake tine tooth, one rake tine tooth per pair of apertures with the tine tooth extending through the blade trailing edge aperture extending downwardly therethrough, from above to below the blade, and having an upper end of the tine tooth bent forwardly angularly with a terminal end thereof forming an annulus with the throughspace of the annulus being aligned with the blade portion''s centrally located aperture of the pair of apertures, with the lower end of the tine tooth extending angularly downwardly and rearwardly from the lower face of the blade portion through which it extends, there being a pair of tine teeth on each of opposite ends of the blade, and the blade being rotatably mountable in typically a conventional manner, each of the tine teeth being secured to the blade detachably by a bolt and nut therefor with the threaded shaft of the bolt extending downwardly through the central aperture after extending through the annular space of the tine tooth with the bolt end being securedly anchored beneath the blade surface by the nut, thus anchoring the tine tooth between the blot head and the upper surface of the blade portion.
Inventors
- 👤 Orvel Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:19
CPC Classifications
A; A01; A01D; A01D42/00; A01D42/02; A01D2101/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
256 words
A rotary lawn mower rake device comprising in combination: a rotary blade having an integral fixed end portion at each of opposite ends thereof, each end portion having upper and lower substantially flat faces, and spaced about equidistantly between the opposite ends, there being mounting means for mounting the blade on a rotary shaft means for rotation of the rotary blade as a part of a rotary mower, there being at least one pair of apertures spaced-apart from one-another a predetermined distance, each aperture extending between the upper and lower faces for each end portion; for each pair, a tine shaped in a predetermined tine-shape having an upper end portion bent in a direction angularly transversely to a longitudinal axially extending axis of a lower end portion of the tine, and the upper end portion having its terminal end bent in a substantially circular hookshape defining a through-space with the circularly hook-shaped terminal end extending in a plane substantially parallel to that of the upper portion and substantially transverse to the angularly downwardly extending lower portion; for each pair of apertures, said tine being of a cross-sectional area snuggly inserted angularly downwardly through a first one of the apertures and having the through-space aligned with the remaining second aperture; and bolt means having a threaded shaft inserted through said through-space and mated and secured in said aligned second aperture anchoring said tine on said upper face, the lower end portion of the tine extending through the second aperture and downwardly from said lower substantially flat face.
Claim 2
Dependent Claim
256 words
A rotary lawn mower rake device comprising in combination: a rotary blade having an integral fixed end portion at each of opposite ends thereof, each end portion having upper and lower substantially flat faces, and spaced about equidistantly between the opposite ends, there being mounting means for mounting the blade on a rotary shaft means for rotation of the rotary blade as a part of a rotary mower, there being at least one pair of apertures spaced-apart from one-another a predetermined distance, each aperture extending between the upper and lower faces for each end portion; for each pair, a tine shaped in a predetermined tine-shape having an upper end portion bent in a direction angularly transversely to a longitudinal axially extending axis of a lower end portion of the tine, and the upper end portion having its terminal end bent in a substantially circular hookshape defining a through-space with the circularly hook-shaped terminal end extending in a plane substantially parallel to that of the upper portion and substantially transverse to the angularly downwardly extending lower portion; for each pair of apertures, said tine being of a cross-sectional area snuggly inserted angularly downwardly through a first one of the apertures and having the through-space aligned with the remaining second aperture; and bolt means having a threaded shaft inserted through said through-space and mated and secured in said aligned second aperture anchoring said tine on said upper face, the lower end portion of the tine extending through the second aperture and downwardly from said lower substantially flat face.
Claim 3
Dependent Claim
18 words
A rotary lawn mower rake device of claim 1, in which said bolt means comprises a headed bolt.
Claim 4
Dependent Claim
69 words
A rotary lawn mower rake device of claim 2, in which said bolt means includes additionally a nut means mountable on said threaded shaft on an opposite side of the plate from the head of the headed bolt when the bolt is inserted through the aligned aperture, such that the terminal end of the aligned tine is securable between the upper flat face and the head of the bolt.
Claim 5
Dependent Claim
38 words
A rotary lawn mower rake device of claim 3, in which each said pair, apertures are spaced one substantially behind the other in a direction between leading and following edges of the end portion of the rotary blade.
Claim 6
Dependent Claim
78 words
A rotary lawn mower rake device of claim 4, in which said remaining one of said pair of apertures, for the mounting of the threaded shaft therethrough, is located about centrally between leading and following edges of the end portion of the rotary blade, and in which the one aperture through which the lower portion of the tine tooth is inserted downwardly is located in juxtaposition to a trailing edge of the end portion of the rotary blade.
Claim 7
Dependent Claim
77 words
A rotary lawn mower rake device of claim 5, for each end portion, including at least a second pair of apertures spaced radially inwardly along a length of the rotary blade, the second pair being substantially in parallel relationship to the pair of the other set of apertures and having corresponding second tine and second bolt means mounting the second tine for the second pair of apertures for each of opposite end portions of the rotary blade.
Claim 8
Dependent Claim
40 words
A rotary lawn mower rake device of claim 1, in which each of said pair of apertures are spaced one substantially behind the other in a direction between leading and following edges of the end portion of the rotary blade.
Claim 9
Dependent Claim
77 words
A rotary lawn mower rake device of claim 1, in which said remaining one of said pair of apertures, for the mounting of the threaded shaft therethrough, is located about centrally between leading and following edges of the end portion of the rotary blade, and in which the one aperture through which the lower portion of the tine is inserted downwardly is located in juxtaposition to a trailing edge of the end portion of the rotary blade.
Claim 10
Dependent Claim
81 words
A rotary lawn mower rake device of claim 1, including at least a second pair of apertures spaced radially inwardly of said end portion of the rotary blade for each of opposite end portions, with the second pair being substantially in parallel relationship to the pair of the other set of apertures and having corresponding second tine and second bolt means mounting the second tine for the second pair of apertures for each of opposite end portions of the rotary blade.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |