公开(公告)号：US09775286B2

公开(公告)日：2017-10-03

申请号：US14525410

申请日：2014-10-28

Applicant: Textron, Inc.

Inventor： Ramya Mahalingam ,  Robert James Pilon, Jr. ,  James Christopher Fox

IPC: A01D34/52 ,  A01D34/44 ,  A01D101/00 ,  A01B33/10

CPC classification number: A01D34/52 ,  A01B33/103 ,  A01D34/44 ,  A01D2101/00

Abstract: A disk for vertically cutting grass surfaces, the disk includes a center plate mountable to a shaft and a plurality of teeth extending from a circumferential edge of the center plate. Each tooth comprises a base extending from the circumferential edge of the center plate and at least one blade extending from the base at an offset angle. Each blade includes a neck extending from the base at the offset angle, and a tip extending radially outward from the neck relative to a center plane of the center plate such that the tip is offset from the center plane. The tip also extends from the neck at a yaw angle relative to the center plane such that when the disk is rotated about a rotational axis of the shaft a leading edge of the tip rotates in a different rotational plane than a trailing edge of the tip.