US 12,082,526 B2
Head for brush cutters
Enrico Cigarini, Reggio Emilia (IT)
Assigned to TECOMEC S.R.L., Reggio Emilia (IT)
Filed by TECOMEC S.R.L., Reggio Emilia (IT)
Filed on Dec. 22, 2021, as Appl. No. 17/645,493.
Claims priority of application No. 102021000020462 (IT), filed on Jul. 30, 2021.
Prior Publication US 2023/0041171 A1, Feb. 9, 2023
Int. Cl. A01D 34/73 (2006.01); A01D 34/82 (2006.01)
CPC A01D 34/73 (2013.01) [A01D 34/828 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A head (1) for brush cutters, comprising:
a support element (3) having a discoid shape and connectable to a drive shaft of a brush cutter so as to be set in rotation about a vertical rotation axis (Y-Y);
a plurality of pins (9), connected to the support element (3), spaced equally apart along a 360° angular sector of the support element (3);
a plurality of cutting elements (2) connected to the plurality of pins (9), so that each cutting element (2) is coupled to a respective one of the pins (9), each said cutting element (2) being free to rotate about the axis of symmetry (y-y) of the pin (9) onto which the cutting element is fitted, thereby defining a cutting generatrix (S); said plurality of cutting elements (2) being arranged in such a way as to provide the respective cutting generatrices (S) tangent, in a part distal to the vertical rotation axis (Y-Y), to an overall cutting diameter (Db) defining the overall cutting surface of the head, and tangent, in a part proximal to the vertical rotation axis (Y-Y), to a fictitious circumference (A), defining a central portion of the support element (3) not reached by the plurality of cutting elements (2);
wherein the A/Db ratio is comprised between 0.06 and 0.3;
wherein the head (1) further comprises a plurality of fixed projections (10) solidly joined to the support element (3) so that each of the fixed projections defines, during the rotation of the support element about the vertical rotation axis (Y-Y), a cutting surface and prevents accumulation of debris from compromising the rotation of a further cutting element to support the plurality of cutting elements (2).