US 11,758,841 B2Granted

Gang-type lawn mower

AssigneeTextron Inc.

InventorsMichael Jonathan Laine, Ashwath Thukaram Kini, Todd L. Scott, Jarrett A. Jones

Life of this patent

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Abstract

A mower includes a frame, at least one cutting unit, and a lifting unit. The lifting unit is connected to the at least one cutting unit and includes a yoke assembly, a first arm assembly, a second arm assembly, and a third arm assembly. The yoke assembly is connected to the cutting unit. The first arm assembly is pivotably mounted to the vehicle frame about a first pivot axis. The second arm assembly is pivotably mounted to the first arm assembly about a second pivot axis and to the yoke assembly about a third pivot axis with the second pivot axis and third pivot axis being non-parallel to the first pivot axis. The third arm assembly includes a first end pivotally connected to the frame and a second end pivotally connected to the second arm assembly.

Claims10

Dependent claims

A lifting unit comprising

a yoke assembly secured to a cutting deck;
a first arm assembly having a first end and a second end, wherein the first arm assembly includes apertures configured to pivotally affix the first arm assembly to a stationary frame about a first pivot axis;
a second arm assembly having a first end and a second end, wherein the first end is pivotably connected to the second end of the first arm assembly about a second pivot axis and wherein the second end is pivotally connected to the yoke assembly about a third pivot axis, wherein the second pivot axis and third pivot axis are non-parallel to the first pivot axis;
and
a third arm assembly having a first end configured to pivotally connect the third arm assembly to the stationary frame and a second end pivotally connected to the second arm assembly,
wherein the first end of the third arm assembly is secured to the stationary frame at a location offset from the first end of the second arm in a longitudinally forward or rearward direction.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/105,777Filed 27 Nov 2020 · continuation
Priority: 7 Feb 2019
Published: US 2021/0076565 A118 Mar 2021
Granted: 19 Sep 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A01D 34/66
Mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle: with two or more cutters
A01B 73/044
Foldable about a horizontal axis: the axis being oriented in a longitudinal direction
A01D 34/82
Having cutters rotating about a vertical axis: other details
A01D 75/306
Arrangements for trailing two or more mowers: for lawn mowers positioned one behind the other or side by side