US 12,404,925 B2
Pulley arrangement for a belt drive and agricultural machine with such
Javier J. Perez Ramirez, Pinto (ES); and Daniel Vergara Martinez, Torrejon de Ardoz (ES)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by DEERE & COMPANY, Moline, IL (US)
Filed on Jun. 7, 2024, as Appl. No. 18/737,145.
Claims priority of application No. 23185394 (EP), filed on Jul. 13, 2023.
Prior Publication US 2025/0020200 A1, Jan. 16, 2025
Int. Cl. F16H 57/04 (2010.01); A01D 69/06 (2006.01); F16H 55/36 (2006.01)
CPC F16H 57/0416 (2013.01) [A01D 69/06 (2013.01); F16H 55/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pulley arrangement for a belt drive comprising:
an input shaft having a first end and a second end, the first end of the input shaft being configured to be couplable to a gear box;
a pulley mounted coaxially on the input shaft, the pulley including an opening, the input shaft extending through the opening;
an inner pulley surface;
an outer pulley surface, the opening extending from the inner pulley surface to the outer pulley surface; and
at least one ring disc fastened coaxially to the inner pulley surface or the outer pulley surface, the at least one ring disc defining a plurality of air flow directing protrusions, grooves, or both protrusions and grooves, each extending from an inner diameter towards an outer diameter of the ring disc, and wherein a circumferential ring disc gap is provided between the at least one ring disc and the input shaft, and
wherein the plurality of air flow directing protrusions, grooves, or both protrusions and grooves is disposed proximate to the opening.