Patent ID: 9357699
Filing Date: 2016-06-07
CPC Classification: A01D,F16H,Y10T

Claim Text:
1. A robotic mower comprising: a chassis; a cutting motor mounted on a motor bracket, the cutting motor driving at least one cutting blade, the motor bracket providing structural support for the cutting motor at an adjustable level relative to the chassis; and a height adjustment assembly comprising a biasing element, a screw engagement nut, and a height adjustment screw, the screw engagement nut being operably coupled to the motor bracket to enable adjustment of a height of the motor bracket via rotation of the height adjustment screw, the height adjustment screw rotating to translate the screw engagement nut vertically along the height adjustment screw based on an engagement of teeth on the screw engagement nut with threads of the height adjustment screw, the teeth of the screw engagement nut being urged toward the threads of the height adjustment screw via the biasing element, wherein the height adjustment screw is arranged to extend along a first direction to enable adjustment of the height of the motor bracket responsive to translation of the screw engagement nut along the first direction in response to rotation of the height adjustment screw, wherein the biasing element is disposed to urge the screw engagement nut in a second direction that is substantially perpendicular to the first direction, and wherein the screw engagement nut is suspended from a pivot point disposed at a portion of a nut housing at least partially surrounding the screw engagement nut.