Granted Patent B2

US 12,653,097 · App. 18/172,156 · Granted Jun 16, 2026

Inventors: Hei Man Lee (Hong Kong, CN); Ho Lam Ng (Hong Kong, CN); Shing Hin Li (Hong Kong, CN)

Assignee: Techtronic Cordless GP

A01D34/73A01D34/008A01D34/18

Abstract

Claims (24)

1 . A rotational cutting blade assembly for use with a garden tool, the rotational cutting blade assembly comprising:

a frame defining an axis of rotation, the frame including a blade mounting point, wherein the blade mounting point includes a cutting boundary, and wherein the cutting boundary is subdivided into at least one access slot and at least one guard; and

a cutting element configured to be attached to the frame at the blade mounting point, wherein the cutting element includes at least one cutting edge, and wherein the at least one cutting edge is immediately adjacent the cutting boundary of the blade mounting point when the cutting element is attached thereto;

wherein the blade mounting point includes a pocket formed into the frame, wherein the cutting element is sized and shaped to be at least partially positioned within the pocket, and wherein the pocket extends into the frame in a direction parallel to the axis of rotation such that the cutting element may be inserted into and removed from the pocked in a direction parallel to the axis of rotation.

2 . The rotational cutting blade assembly of claim 1 , wherein the frame includes a hub defining the axis of rotation, and at least one arm extending radially outwardly from the hub relative to the axis of rotation.

3 . The rotational cutting blade assembly of claim 2 , wherein the blade mounting point is located in the at least one arm.

4 . The rotational cutting blade assembly of claim 3 , wherein the arm includes a leading edge and a trailing edge relative to the direction of rotation, and wherein the at least one access slot is formed into the leading edge of the arm.

5 . The rotational cutting blade assembly of claim 2 , wherein the frame is substantially planar normal to the axis of rotation.

6 . The rotational cutting blade assembly of claim 1 , wherein each of the at least one access slots are no greater than 12 mm wide.

7 . The rotational cutting blade assembly of claim 1 , wherein the blade mounting point includes two cutting boundaries, and wherein each cutting boundary is subdivided into at least one access slot and at least one guard.

8 . The rotational cutting blade assembly of claim 1 , wherein the pocket defines a first pocket depth, and wherein the first pocket depth corresponds to the thickness of the cutting element.

9 . The rotational cutting blade assembly of claim 1 , wherein the cutting boundary lies on a plane that is normal to the axis of rotation.

10 . A rotational cutting blade configured to rotate about an axis of rotation, the rotational cutting blade comprising:

a hub defining the axis of rotation,

a first arm extending radially from the hub to define a first distal end, wherein the first arm includes a first blade mounting point configured to at least partially receive a cutting element therein, wherein the first blade mounting point includes a first cutting boundary, and wherein the first cutting boundary is subdivided into at least one access slot and at least one guard;

a second arm extending radially from the hub to define a second distal end, wherein the second arm includes a second blade mounting point configured to at least partially receive a cutting element, therein, wherein the second blade mounting point includes a second cutting boundary, and wherein the second cutting boundary includes at least one access slot and at least one guard; and

wherein the at least one guard of the first blade mounting point is positioned over a first range of radial distances from the axis of rotation, wherein the at least one access slot of the second blade mounting point is positioned over a second range of radial distances from the axis of rotation, and wherein the first range of radial distances at least partially overlaps the second range of radial distances.

11 . The rotational cutting blade of claim 10 , wherein the at least one guard of the first blade mounting point is positioned at a first radial distance from the axis of rotation, wherein the at least one guard of the second blade mounting point is positioned at a second radial distance from the axis of rotation, and wherein the first radial distance is different than the second radial distance.

12 . The rotational cutting blade of claim 10 , where the first blade mounting point includes a pocket formed into the first arm, and wherein the second blade mounting point includes a pocket formed into the second arm.

13 . The rotational cutting blade of claim 10 , wherein the first cutting boundary and the second cutting boundary both lie on a plane that is oriented normal to the axis of rotation.

14 . The rotational cutting blade of claim 10 , wherein the first cutting boundary of the first blade mounting point is positioned over a third range of radial distances from the axis of rotation, wherein the second cutting boundary of the second blade mounting point is positioned over a fourth range of radial distances from the axis of rotation, and wherein the first range of radial distances at least partially overlaps the fourth range of radial distances.

15 . The rotational cutting blade of claim 10 , wherein each access slot of the first blade mounting point and each access slot of the second blade mounting point are no greater than 10 mm in width.

16 . The rotational cutting blade of claim 10 , wherein the first arm includes a leading edge and a trailing edge relative to the direction of rotation, and wherein the at least one access slot of the first blade mounting point is formed into the leading edge.

17 . The rotational cutting blade of claim 16 , wherein the second arm includes a leading edge and a trailing edge relative to the direction of rotation, and wherein the at least one access slot of the second blade mounting point is formed into the leading edge.

Assignments (1)

Continuity (2)

References Cited (400)