US 12,442,328 B2
Piston with a biaxial bearing for an opposed-piston engine
Isaac B. Thomas, Carson City, NV (US)
Assigned to Achates Power, Inc., San Diego, CA (US)
Filed by Achates Power, Inc., San Diego, CA (US)
Filed on Dec. 6, 2023, as Appl. No. 18/530,723.
Claims priority of provisional application 63/430,961, filed on Dec. 7, 2022.
Prior Publication US 2024/0191653 A1, Jun. 13, 2024
Int. Cl. F02B 75/28 (2006.01)
CPC F02B 75/282 (2013.01) 24 Claims
OG exemplary drawing
 
1. A piston apparatus, comprising:
a cylindrical piston body configured to slide in an opposed-piston, internal combustion engine cylinder having a bore diameter (D1); and,
the piston body including a biaxial bearing structure configured to define a biaxial wrist pin diameter (D2);
wherein, D2<0.5D1.