Lawn mower
US-2015271998-A1 · Oct 1, 2015 · US
Lawn mower
US10813285B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10813285-B2 |
| Application number | US-201715852966-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 22, 2017 |
| Priority date | Dec 27, 2016 |
| Publication date | Oct 27, 2020 |
| Grant date | Oct 27, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A cutter blade of a lawn mower includes a blade body and flaps. The blade body includes a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade. The flap pivotal axis is provided along a blade edge without intersecting with a blade rotational axis. A flap pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and in parallel to the pivotal axis, in a rotation direction of the cutter blade.
First claim
Opening claim text (preview).
What is claimed is: 1. A lawn mower comprising: a cutter blade including a blade body and a flap, the blade body extending in a direction perpendicular to a blade rotational axis and including a blade edge in a front edge in a rotation direction, the flap having a changeable flap angle, and being attached to the blade body; and a flap drive mechanism configured to drive the flap, wherein the blade body has a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade with respect to a radiation direction around the blade rotational axis, a pivotal axis of the flap is provided along the blade edge without intersecting with the blade rotational axis, and the pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and in parallel to the pivotal axis, in a rotation direction of the cutter blade, wherein the flap drive mechanism includes a flexible shaft provided along the blade body, and configured to transmit a driving force for operating the flap, to the flap. 2. The lawn mower according to claim 1 , wherein an expansion is provided for the blade body, over an area extending in a radial direction of the cutter blade, the expansion expanding in a thickness direction of the cutter blade, a recess is provided on a surface of the blade body opposite to a surface where the expansion is provided, the recess forming a back surface of the expansion, and the flexible shaft is provided in the recess. 3. The lawn mower according to claim 1 , wherein the blade body includes an inner blade forming part adjacent to a blade central part and an outer blade forming part provided outside the inner blade forming part in a radial direction, and the flap is attached to the outer blade forming part, the outer blade forming part is positioned below the inner blade forming part, and one end of the flexible shaft is provided in the inner blade forming part, and another end of the flexible shaft is provided in the outer blade forming part. 4. A lawn mower comprising: a cutter blade including a blade body and a flap, the blade body extending in a direction perpendicular to a blade rotational axis and including a blade edge in a front edge in a rotation direction, the flap having a changeable flap angle, and being attached to the blade body; and a flap drive mechanism configured to drive the flap, wherein the blade body has a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade with respect to a radiation direction around the blade rotational axis, a pivotal axis of the flap is provided along the blade edge without intersecting with the blade rotational axis, and the pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and in parallel to the pivotal axis, in a rotation direction of the cutter blade that is opposite to the reverse-rotation direction, and the pivotal axis is provided between the blade edge and the line.
Assignees
Inventors
Classifications
Noise reduction means · CPC title
- A01D34/73Primary
Cutting apparatus · CPC title
in or into a container carried by the mower; Containers therefor (A01D43/077 takes precedence) · CPC title
with motor driven wheels · CPC title
Lawn-mowers · CPC title
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Frequently asked questions
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- What does patent US10813285B2 cover?
- A cutter blade of a lawn mower includes a blade body and flaps. The blade body includes a shape with a sweepback angle inclined in a reverse-rotation direction of the cutter blade. The flap pivotal axis is provided along a blade edge without intersecting with a blade rotational axis. A flap pivotal axis is provided at a position offset from a line perpendicular to the blade rotational axis and …
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A01D34/73. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Oct 27 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).