US 12,241,549 B2
Piston pin and manufacturing method thereof
Haksoo Kim, Seoul (KR); Byung Chan Kang, Suwon-si (KR); Dong Wook Park, Hwaseong-si (KR); and Myeong Inn Na, Osan-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and SINTERON, Hwaseong-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and SINTERON, Hwaseong-si (KR)
Filed on Apr. 29, 2021, as Appl. No. 17/244,646.
Claims priority of application No. 10-2021-0017542 (KR), filed on Feb. 8, 2021.
Prior Publication US 2022/0252157 A1, Aug. 11, 2022
Int. Cl. F16J 1/16 (2006.01); B22F 3/16 (2006.01); B22F 5/00 (2006.01); F16J 1/01 (2006.01)
CPC F16J 1/16 (2013.01) [B22F 3/16 (2013.01); B22F 5/008 (2013.01); F16J 1/01 (2013.01); B22F 2301/10 (2013.01); B22F 2301/15 (2013.01); B22F 2301/35 (2013.01); B22F 2302/40 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A piston pin comprising:
a pipe-shaped main body made of an iron-based sintered alloy,
wherein the piston pin is configured to be installed to penetrate an upper end of a connecting rod and a piston,
wherein a mass center of the piston pin is eccentric in a circumferential direction,
wherein the piston pin includes a first area and a second area divided in the circumstantial direction, and
wherein the first area and the second area have different densities.