US4322938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflector member for a rotary lawn mower
Assignee: Outboard Marine Corp
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Filing: 1980-10-01
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Granted: 1982-04-06
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Expires: 2000-10-01
Abstract
Abstract A lawn mower comprises a housing which encloses a rotary cutting blade and which includes a sidewall having therein a generally horizontal grass discharge passage. A member is carried by the housing and extends in the grass discharge passage below the plane of cutting blade rotation. The member includes an inner edge portion which is located adjacently outside the periphery of the path of cutting blade rotation and an oppositely spaced outer edge portion. A lip extends generally vertically downwardly from the outer edge portion. The member deflects objects struck by the cutting blade and thereby obstructs the discharge of these objects outwardly from the housing through the grass discharge passage.
Inventors
- 👤 James F. Efflandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:31
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/82; A01D34/828; A01D43/00; A01D43/06; A01D43/063; A01D43/0631; A01D2101/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A lawn mower comprising a housing enclosing a rotary cutting blade and including a sidewall having therein an opening and a generally horizontal grass discharge passage extending from said opening, a member carried fixedly by said housing and extending in said grass discharge passage and including an inner edge portion located adjacently outside the periphery of the path of cutting blade rotation below the plane of cutting blade rotation, and an oppositely spaced outer edge portion located below the plane of cutting blade rotation, and a lip extending generally vertically downwardly from said outer edge portion.
Claim 2
Dependent Claim
96 words
A lawn mower comprising a housing enclosing a rotary cutting blade and including a sidewall having therein an opening and a generally horizontal grass discharge passage extending from said opening, a member carried fixedly by said housing and extending in said grass discharge passage and including an inner edge portion located adjacently outside the periphery of the path of cutting blade rotation below the plane of cutting blade rotation, and an oppositely spaced outer edge portion located below the plane of cutting blade rotation, and a lip extending generally vertically downwardly from said outer edge portion.
Claim 3
Dependent Claim
100 words
A lawn mower according to claim 1 wherein said sidewall has an arcuate extent of less than 360° and terminates with arcuately spaced end portions, wherein said generally horizontal discharge passage extends from said arcuately spaced end portions of said sidewall, and further including a bar extending between said end portions of said sidewall and adjacently outside the periphery of the path of cutting blade rotation, said bar including a lower edge located below the plane of cutting blade rotation, and wherein said inner edge portion of said member is connected to said bar adjacent to said lower edge thereof.
Claim 4
Dependent Claim
32 words
A lawn mower according to claim 1 or 2 and further including a flange member and means operatively connecting said flange member on said lip for vertical movement relative to said lip.
Claim 5
Dependent Claim
54 words
A lawn mower according to claim 3 wherein said lip includes a forward edge, wherein said flange member includes a forward edge, and wherein said means operatively connecting said flange member on said lip includes pin means for pivotally mounting said forward edge of said flange member on said forward edge of said lip.
Claim 6
Dependent Claim
85 words
A lawn mower according to claim 4 wherein said lip includes a lower edge, wherein said flange member includes a lower edge, and further including means for limiting the range of pivotal movement of said flange member between a first position in which said lower edge of said flange member is generally aligned with said lower edge of said lip and a second position in which said lower edge of said flange member extends at an angle downwardly from said lower edge of said lip.
Claim 7
Dependent Claim
24 words
A lawn mower according to claim 3 wherein said flange member includes a front edge and a camming surface formed on said front edge.
Claim 8
Dependent Claim
71 words
A lawn mower according to claim 1 or 2 wherein said member includes a mid-body portion extending primarily horizontally from said inner edge portion and fixed relative to said housing within said grass discharge passage, and means for hingedly attaching said outer edge portion to said mid-body portion for vertical movement relatively thereto between a position generally coplanar with said mid-body portion and a position extending downwardly from said mid-body portion.
Claim 9
Dependent Claim
34 words
A lawn mower according to claim 7 and wherein said hinge means includes means for preventing downward vertical movement of said outer edge portion beyond a predetermined position vertically displaced below said mid-body portion.
Claim 10
Dependent Claim
23 words
A lawn mower according to claim 8 wherein said predetermined position is vertically displaced below said mid-body portion by no more than 30°.
Claim 11
Dependent Claim
23 words
A lawn mower according to claim 7 wherein said lip includes a forward edge and a caming surface formed on said forward edge.
Claim 12
Dependent Claim
47 words
A lawn mower according to claim 1 or 2 wherein said grass discharge passage includes an outlet spaced radially outwardly from the path of cutting blade rotation, and wherein said outer edge portion of said member terminates generally adjacently to said outlet of said grass discharge passage.
Claim 13
Dependent Claim
46 words
A lawn mower according to claim 1 or 2 wherein said grass discharge passage includes an outlet spaced radially outwardly from the path of cutting blade rotation, and wherein said outer edge portion of said member extends outwardly beyond said outlet of said grass discharge passage.
Claim 14
Dependent Claim
37 words
A lawn mower according to claim 12 wherein said outer edge portion extends approximately two inches beyond said outlet of said grass discharge passage, and wherein said lip extends approximately one inch below said outer edge portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |