	US 11,850,773 B2
	Piston including a composite layer applied to metal substrate
Warran Boyd Lineton, Chelsea, MI (US); Ross Allen Evers, Tecumseh, MI (US); and Greg Salenbien, Britton, MI (US)
Assigned to Tenneco Inc., Lake Forest, IL (US)
Filed by Tenneco Inc., Lake Forest, IL (US)
Filed on Nov. 28, 2022, as Appl. No. 17/994,687.
Application 16/601,918 is a division of application No. 15/389,862, filed on Dec. 23, 2016, granted, now 10,443,537, issued on Oct. 15, 2019.
Application 17/994,687 is a continuation of application No. 16/601,918, filed on Oct. 15, 2019, granted, now 11,511,515.
Claims priority of provisional application 62/271,425, filed on Dec. 28, 2015.
Prior Publication US 2023/0088665 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02F 3/12 (2006.01); F02F 3/14 (2006.01); B29C 43/18 (2006.01); B32B 3/06 (2006.01); B29C 43/52 (2006.01); F02F 3/00 (2006.01); B32B 5/00 (2006.01); B32B 27/00 (2006.01); B32B 15/20 (2006.01); B32B 15/18 (2006.01); B32B 9/04 (2006.01); B32B 7/04 (2019.01); B32B 15/16 (2006.01); B32B 9/00 (2006.01); B32B 5/02 (2006.01); B32B 7/05 (2019.01); B32B 27/06 (2006.01); B32B 15/098 (2006.01); B32B 27/42 (2006.01); B32B 5/16 (2006.01); B32B 15/14 (2006.01); F04B 53/14 (2006.01); F02B 77/02 (2006.01); F04B 39/00 (2006.01); B29K 277/00 (2006.01); B29K 709/02 (2006.01); B29K 101/10 (2006.01); B29K 475/00 (2006.01); B29K 45/00 (2006.01); B29K 105/12 (2006.01); B29K 279/00 (2006.01); B29K 307/04 (2006.01); B29L 31/00 (2006.01); F02F 3/26 (2006.01)

CPC B29C 43/18 (2013.01) [B29C 43/52 (2013.01); B32B 3/06 (2013.01); B32B 5/00 (2013.01); B32B 5/02 (2013.01); B32B 5/16 (2013.01); B32B 7/04 (2013.01); B32B 7/05 (2019.01); B32B 9/005 (2013.01); B32B 9/041 (2013.01); B32B 9/045 (2013.01); B32B 9/047 (2013.01); B32B 9/048 (2013.01); B32B 15/098 (2013.01); B32B 15/14 (2013.01); B32B 15/16 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/00 (2013.01); B32B 27/06 (2013.01); B32B 27/42 (2013.01); F02F 3/12 (2013.01); B29K 2045/00 (2013.01); B29K 2101/10 (2013.01); B29K 2105/12 (2013.01); B29K 2277/10 (2013.01); B29K 2279/00 (2013.01); B29K 2307/04 (2013.01); B29K 2475/00 (2013.01); B29K 2709/02 (2013.01); B29L 2031/7494 (2013.01); B32B 2260/021 (2013.01); B32B 2260/025 (2013.01); B32B 2260/046 (2013.01); B32B 2262/0269 (2013.01); B32B 2262/105 (2013.01); B32B 2262/106 (2013.01); B32B 2262/14 (2013.01); B32B 2264/107 (2013.01); B32B 2307/30 (2013.01); B32B 2307/304 (2013.01); B32B 2307/558 (2013.01); B32B 2307/732 (2013.01); B32B 2605/00 (2013.01); F02B 77/02 (2013.01); F02F 3/003 (2013.01); F02F 3/0084 (2013.01); F02F 3/14 (2013.01); F02F 3/26 (2013.01); F02F 2003/0061 (2013.01); F04B 39/0005 (2013.01); F04B 53/14 (2013.01); F05C 2203/0869 (2013.01); F05C 2225/06 (2013.01); F05C 2251/048 (2013.01); F05C 2253/12 (2013.01); F05C 2253/16 (2013.01); F05C 2253/20 (2013.01); F05C 2253/24 (2013.01)]

9 Claims

8. A piston, comprising: a body portion formed of metal; a composite layer applied to said body portion and forming at least a portion of a combustion surface; said composite layer including a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive; wherein said metal of said body portion is aluminum or steel; said body portion includes a crown extending circumferentially about a center axis from an upper end toward a lower end; said crown presents an uppermost surface at said upper end; said uppermost surface includes a combustion bowl extending inwardly and downwardly from a planar outer rim; said uppermost surface includes an undercut scroll thread, said composite layer is disposed on said undercut scroll thread of said uppermost surface; said composite layer has a thermal conductivity of 0.8 to 5 W/m·K; said thermoset resin is a phenolic resin, said insulating component is a ceramic, said strengthening fibers are graphite, and said impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers; said thermoset resin is present in an amount of 25 wt. % to 35 wt. %, based on the total weight of said composite layer; said insulating component is present in an amount of 50 wt. % to 70 wt. %, based on the total weight of said composite layer; said strengthening fibers are present in an amount of 1 wt. % to 10 wt. %, based on the total weight of said composite layer; and said impact toughening additive is present in an amount of 1 wt. % to 10 wt. %, based on the total weight of said composite layer.