Patent ID: 8205423

Claim:
A mowing device, comprising: at least one rotor for rotation about a first rotation axis; at least one blade holder; at least one blade driven in rotation by the rotor; wherein the blade is attached to the blade holder, and the blade holder is attached to the rotor by a breakable connection and a bolt or hinge, the bolt or hinge defining a second rotation axis situated at a radial distance from the first rotation axis, the blade holder being rotatable about the second rotation axis when released by the breakable connection to rotate the blade holder from a normal operating position to a retracted position, and wherein the breakable connection comprises a breaking pin connecting the blade holder to the rotor to prevent rotation of the blade holder about the second rotation axis to maintain the blade holder in the normal operating position during normal operation, and permit rotation of the blade holder about the second rotation axis to allow the blade holder to assume the retracted position when the breaking pin has been broken.