US3963184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for converting a conventional lawn mower to a leaf shredder
Assignee: Lee Raymond Organization Inc
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Filing: 1975-04-28
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Granted: 1976-06-15
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Expires: 1995-04-28
Abstract
Abstract A plate is detachably securable to the bottom of a conventional lawn mower. The plate covers approximately half of the bottom but leaves the portion open at the rear. A specifically altered cutting blade of the mower, driven by the motor, rotates over the top of the blade. Fixed blades attached to each end of the rotating blade cooperate with fixed fingers fixed to the plate to shred leaves picked up by the mower. The mower, with the device attached, can be placed on top of a stand that has an open front into which leaves may be raked. Thus, a fixed leaf shredder is formed, into which piles of leaves can be raked for efficient shredding and bagging.
Inventors
- 👤 Helmut Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:14
CPC Classifications
A; A01; A01D; A01D42/00; A01D42/005; A01D2101/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
192 words
A detachable device for converting a conventional motorized lawn mower to a leaf shredder, comprising: a generally flat plate with a periphery taking the shape of a circle truncated by a non-diametrical chord, the plate being detachably securable to the bottom of a conventional lawn mower with the straight portion of the periphery extending transversely across the bottom, so as to expose the rear portion of the bottom of the mower; an altered mower blade secured at its center to the shaft of the lawn mower and rotating in a plane parallel to the plate; two like pairs of like fixed blades, each pair disposed at a corresponding end of the mower blade with the pairs being symmetrically disposed about the center of the blade, and with each fixed blade extending upwardly and rearwardly from its point of attachment to the mower blade; and three like, spaced, straight, fixed fingers suspended above the plate and extending downwardly theretowards, in a manner that the rotating blade can carry each pair of symmetrically mounted blades between the fingers through the spaces therebetween and to shred leaves caught between the fingers and symmetrically mounted blades.
Claim 2
Dependent Claim
192 words
A detachable device for converting a conventional motorized lawn mower to a leaf shredder, comprising: a generally flat plate with a periphery taking the shape of a circle truncated by a non-diametrical chord, the plate being detachably securable to the bottom of a conventional lawn mower with the straight portion of the periphery extending transversely across the bottom, so as to expose the rear portion of the bottom of the mower; an altered mower blade secured at its center to the shaft of the lawn mower and rotating in a plane parallel to the plate; two like pairs of like fixed blades, each pair disposed at a corresponding end of the mower blade with the pairs being symmetrically disposed about the center of the blade, and with each fixed blade extending upwardly and rearwardly from its point of attachment to the mower blade; and three like, spaced, straight, fixed fingers suspended above the plate and extending downwardly theretowards, in a manner that the rotating blade can carry each pair of symmetrically mounted blades between the fingers through the spaces therebetween and to shred leaves caught between the fingers and symmetrically mounted blades.
Claim 3
Dependent Claim
85 words
The device of claim 1 further comprising a stand with a horizontal bottom, an open front, a vertically extending peripheral sidewall extending upwardly from the bottom around the sides and rear in a shape generally similar to that of a horseshoe, and a flat downwardly and rearwardly extending top surface, whereby a conventional lawn mower to which the device of claim 1 has been secured can be placed on top of the stand to shred leaves that are raked into the front of the stand.
Claim 4
Dependent Claim
24 words
The device of claim 2 wherein the fingers are located at the rear right hand corner of the plate, as viewed from the top.
Claim 5
Dependent Claim
20 words
The device of claim 3 wherein an upwardly and rearwardly extending flange is attached to the tops of the fingers.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |