US 12,379,023 B2
Sprocket
Wey Chin Tan, Singapore (SG); and Chee Onn Leong, Singapore (SG)
Assigned to Sunstar Singapore PTE. Ltd., Singapore (SG)
Filed by Sunstar Singapore Pte. LTD.
Filed on May 30, 2024, as Appl. No. 18/678,959.
Claims priority of application No. 10202301845X (SG), filed on Jun. 28, 2023.
Prior Publication US 2025/0003476 A1, Jan. 2, 2025
Int. Cl. F16H 55/30 (2006.01); F16H 55/08 (2006.01)
CPC F16H 55/30 (2013.01) [F16H 55/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sprocket comprising:
a plurality of teeth; and
a mud discharge groove that is formed to partially reduce a plate thickness and opens into a region including a tooth root center and a tooth tip center on a trailing side in a rotational direction,
wherein a planar shape of each of the teeth has a pair of tooth root arc portions that has a constant curvature and is adjacent to the tooth root center,
wherein a lateral edge on a leading side of the mud discharge groove in the rotational direction terminates between the tooth root center and a point where a length along the planar shape of the tooth from a leading end of the tooth root arc portion on a leading side in the rotational direction becomes a quarter of a length of the tooth root arc portion, and
wherein a lateral edge on a trailing side of the mud discharge groove in the rotational direction terminates between the tooth tip center and the leading end of the tooth root arc portion on the trailing side in the rotational direction.