Patent US4189904A successfully refreshed from Google Patents.
US4189904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaf mulcher attachment for lawn mowers
Assignee: Individual
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Filing: 1976-05-27
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Granted: 1980-02-26
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Expires: 1996-05-27
Abstract
Abstract A leaf mulching attachment is provided for connection to a conventional lawn mower. The attachment comprises a plate having inwardly extending tines and defining openings, with the plate being adapted for positioning in front of the grass ejection chute. The plate is connected to the housing of the lawn mower in a manner in which the plate and tines avoid contact with the normal grass cutting blade of the lawn mower, permitting the lawn mower to be used for cutting grass and mulching leaves without changing the cutting blade.
Inventors
- 👤 Alexander D. Paker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:27
CPC Classifications
A; A01; A01D; A01D42/00; A01D42/005; A01D2101/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A leaf mulching attachment for use with a lawn mower of the type having a housing, a rotating grass cutting blade located within the housing and a grass ejection chute opening defined by the housing, the improvement comprising: a plate adapted for connection to the interior of said housing, said plate having a size that is sufficient to cover a substantial portion of said chute opening, a plurality of tines struck from said plate and extending from said plate inwardly toward said axis, said tines extending inwardly and downwardly and overlying a portion of the openings from which said tines are struck; said tines being located on said plate in a position adapted to lie in a horizontal plane above the highest horizontal plane of the grass cutting blade; said plate defining a plurality of openings; and means for connecting said plate to said housing whereby said plate and tines avoid contact with said grass cutting blade, said connecting means comprising apertures for receiving threaded fasteners.
Claim 2
Dependent Claim
166 words
A leaf mulching attachment for use with a lawn mower of the type having a housing, a rotating grass cutting blade located within the housing and a grass ejection chute opening defined by the housing, the improvement comprising: a plate adapted for connection to the interior of said housing, said plate having a size that is sufficient to cover a substantial portion of said chute opening, a plurality of tines struck from said plate and extending from said plate inwardly toward said axis, said tines extending inwardly and downwardly and overlying a portion of the openings from which said tines are struck; said tines being located on said plate in a position adapted to lie in a horizontal plane above the highest horizontal plane of the grass cutting blade; said plate defining a plurality of openings; and means for connecting said plate to said housing whereby said plate and tines avoid contact with said grass cutting blade, said connecting means comprising apertures for receiving threaded fasteners.
Claim 3
Dependent Claim
110 words
A leaf mulching attachment for a lawn mower, which comprises: a plate defining a plurality of openings and a plurality of tines, said plate comprising a sheet adapted for positioning in front of the chute opening of the lawn mower, said plate being dimensioned for connection to the lawn mower housing without requiring removal of the lawn cutting blade normally carried by the lawn mower; and a plurality of tines extending inwardly and downwardly from the plate with each tine overlying at least a portion of an opening; and means for connecting said plate to the lawn mower and permitting said plate to avoid contact with said lawn cutting blade.
Claim 4
Dependent Claim
110 words
A leaf mulching attachment for a lawn mower, which comprises: a plate defining a plurality of openings and a plurality of tines, said plate comprising a sheet adapted for positioning in front of the chute opening of the lawn mower, said plate being dimensioned for connection to the lawn mower housing without requiring removal of the lawn cutting blade normally carried by the lawn mower; and a plurality of tines extending inwardly and downwardly from the plate with each tine overlying at least a portion of an opening; and means for connecting said plate to the lawn mower and permitting said plate to avoid contact with said lawn cutting blade.
Claim 5
Dependent Claim
30 words
A leaf mulching attachment as described in claim 2, wherein said plate comprises a steel planar sheet adapted for curvilinear bending when connected to the housing of the lawn mower.
Claim 6
Dependent Claim
30 words
A leaf mulching attachment as described in claim 2, wherein said tines are struck from said plate and overlie a portion of the openings from which said tines are struck.
Claim 7
Dependent Claim
37 words
A leaf mulching attachment as described in claim 2, wherein said tines are located on said plate in a position adapted to lie in a horizontal plane above the highest horizontal plane of the grass cutting blade.
Claim 8
Dependent Claim
123 words
A leaf mulching attachment for use with a rotary lawn mower having a housing, a rotating grass cutting blade located within the housing and a grass ejection chute opening defined by the housing, the improvement comprising: a plate adapted for connection to the interior of said housing, said plate having a size that is sufficient to cover a substantial portion of said chute opening; a plurality of tines extending inwardly and downwardly from said plate; said plate defining a plurality of openings; and means for connecting said plate to said housing whereby said plate and tines avoid contact with said grass cutting blade; said tines being struck from said plate and overlying a portion of the openings from which said tines are struck.
Claim 9
Dependent Claim
123 words
A leaf mulching attachment for use with a rotary lawn mower having a housing, a rotating grass cutting blade located within the housing and a grass ejection chute opening defined by the housing, the improvement comprising: a plate adapted for connection to the interior of said housing, said plate having a size that is sufficient to cover a substantial portion of said chute opening; a plurality of tines extending inwardly and downwardly from said plate; said plate defining a plurality of openings; and means for connecting said plate to said housing whereby said plate and tines avoid contact with said grass cutting blade; said tines being struck from said plate and overlying a portion of the openings from which said tines are struck.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |