US 12,377,504 B2
Protection arrangement for a power tool
Mats Lawenius, Gothenburg (SE); Anders Reuterberg, Lerum (SE); and Niklas Sundberg, Alingsås (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Filed by HUSQVARNA AB, Huskvarna (SE)
Filed on Dec. 16, 2020, as Appl. No. 17/124,049.
Application 17/124,049 is a continuation of application No. 17/251,966, previously published as PCT/SE2018/050721, filed on Jul. 2, 2018.
Prior Publication US 2021/0101239 A1, Apr. 8, 2021
Int. Cl. B23D 45/16 (2006.01); B23Q 11/08 (2006.01); B28D 1/04 (2006.01)
CPC B23Q 11/08 (2013.01) [B23D 45/16 (2013.01); B28D 1/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hand-held power tool comprising:
a rotatable work tool having a center and a circumference and being adapted to rotate in a certain direction of rotation; and
a blade guard arrangement that at least partly is arranged to shield a part of the rotatable work tool,
wherein the blade guard arrangement comprises a blade guard and a protective arrangement,
wherein the protective arrangement is adapted to be displaced along a path from a working position, in which the protective arrangement admits cutting of a work object, to a displaced position such that in the displaced position, the protective arrangement at least partly becomes positioned such that a first part of the circumference is covered,
wherein the first part of the circumference follows the blade guard, and runs an angular distance along the circumference after the blade guard, in the direction of rotation,
wherein the protective arrangement is biased into both the working position and the displaced position based on where along the path the protective arrangement is disposed,
wherein the protective arrangement is biased into both the working position and the displaced position by a spring, and
wherein the spring is configured such that, responsive to the hand-held power tool experiencing a kick-back condition, the protective arrangement overcomes a bias of the spring to enable the protective arrangement to move from the working position to the displaced position.