US 11,920,538 B2
Anti-polish ring for an engine cylinder
Owen Summerfield, Rothwell (GB); Craig Daniel Fox, Leamington Spa (GB); Robert Harries, Daventry (GB); Jamie Kehoe, Northhamptonshire (GB); Kent H. Clark, Milford, MI (US); John M Antonevich, Bemus Point, NY (US); Reid M. Irish, Stockton, NY (US); Scott A. Ragon, Seymour, IN (US); Stephen G. Townsend, Daventry (GB); and Peter Thomas Quanz, Sherman, NY (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Nov. 3, 2022, as Appl. No. 18/052,441.
Application 18/052,441 is a continuation of application No. PCT/US2021/032868, filed on May 18, 2021.
Claims priority of provisional application 63/030,489, filed on May 27, 2020.
Prior Publication US 2023/0089302 A1, Mar. 23, 2023
Int. Cl. F02F 1/00 (2006.01)
CPC F02F 1/004 (2013.01) [F02F 2001/006 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an anti-polish ring configured to be inserted into and retained in a first end of a cylinder liner of a reciprocating piston internal combustion engine, the anti-polish ring including a ring portion extending axially along an axial portion of the cylinder liner between a first end of the ring portion and a second end of the ring portion, wherein the anti-polish ring includes at least one passage configured to receive a corresponding exhaust valve or intake valve passing therethrough, wherein the at least one passage is formed on a portion of the second end of the ring portion that extends radially inward from the cylinder liner.