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US3828533A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary mower

Assignee: Individual
•
Filing: 1972-11-02
•
Granted: 1974-08-13
•
Expires: 1992-11-02
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Abstract

Abstract A rotary mower having a handle, a housing mounted on wheels, an engine mounted in a depression in the top of said housing, a shaft extending vertically from said engine into said housing, a circular chamber inside said housing, and a blade or other cutting means mounted on the lower end of said shaft for rotation inside said housing below said depression and a major part of said chamber. Enclosing the underside of said housing is a plate with a deflection along its rear edge extending under the rear portion of said housing and forwardly beyond said shaft but rearwardly from the forward end of the path of rotation of said blade, and a plurality of spaced rods extending forwardly from the forward edge of said plate to a point near the forward edge of said housing. A crossbar member is provided adjacent the forward ends of said spaced rods and a rotary brush means powered by the rotation of one of said wheels is provided inside and near the forward end of said housing above said spaced rods.

Inventors

  • 👤 J Finneran

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 23:55
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/82; A01D2101/00

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 135 words
A rotary mower comprising a housing having wheels and a handle, an engine mounted on the upper side of said housing and having a shaft extending vertically into said housing, a blade mounted on the lower end of said shaft for rotation in a horizontal plane in said housing, means in the rear of said housing defining a discharge port approximately equal in width to the length of said blade, a generally circular chamber inside said housing, said chamber being formed of first and second generally circular baffle means extending downward from said housing, said chamber having an enlarged opening to the rear to mate with said discharge port, and a panel mounted on the bottom of the housing enclosing at least the 180* of the rotational area of said blade rearward of said shaft.
Claim 2
Dependent Claim 135 words
A rotary mower comprising a housing having wheels and a handle, an engine mounted on the upper side of said housing and having a shaft extending vertically into said housing, a blade mounted on the lower end of said shaft for rotation in a horizontal plane in said housing, means in the rear of said housing defining a discharge port approximately equal in width to the length of said blade, a generally circular chamber inside said housing, said chamber being formed of first and second generally circular baffle means extending downward from said housing, said chamber having an enlarged opening to the rear to mate with said discharge port, and a panel mounted on the bottom of the housing enclosing at least the 180* of the rotational area of said blade rearward of said shaft.
Claim 3
Dependent Claim 30 words
A rotary mower as define in claim 1 additionally comprising a pivoted plate mounted across said discharge port, said pivoted plate being securable in either the closed or open position.
Claim 4
Dependent Claim 61 words
A rotary mower as defined in claim 2 wherein said panel on the bottom of the housing includes an upwardly extending angular portion along substantially all its rearward edge, said upwardly extending angular portion intercepting the line between the end of said blade and the bottom edge of the rear of said housing when said blade is rearward of said shaft.
Claim 5
Dependent Claim 44 words
The rotary mower as defined in claim 1 additionally comprising a plurality of spaced rods extending forwardly from the forward edge of said bottom panel and enclosing said portion of the 180* of said area forward of said shaft not enclosed by said panel.

References Cited (Backward Citations)

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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) 1977-08-12 1978-02-11 1978-08-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-12 1982-02-11 1982-08-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-12 1986-02-11 1986-08-13 $7700.00 Window Closed / Lapsed

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