US 12,345,182 B2
Plate valve four stoke head
Steve Burkholder, Annapolis, MD (US)
Appl. No. 17/616,962
Filed by Steve Burkholder, Annapolis, MD (US)
PCT Filed Jun. 3, 2020, PCT No. PCT/US2020/035877
§ 371(c)(1), (2) Date Dec. 6, 2021,
PCT Pub. No. WO2020/247466, PCT Pub. Date Dec. 10, 2020.
Claims priority of provisional application 62/856,402, filed on Jun. 3, 2019.
Prior Publication US 2022/0307391 A1, Sep. 29, 2022
Int. Cl. F01L 7/06 (2006.01); F01L 3/02 (2006.01); F01L 3/08 (2006.01); F01M 9/10 (2006.01); F02F 1/42 (2006.01)
CPC F01L 7/06 (2013.01) [F01L 3/02 (2013.01); F01L 3/08 (2013.01); F01M 9/10 (2013.01); F02F 1/4285 (2013.01); F01L 2250/04 (2013.01); F01L 2301/00 (2020.05)] 22 Claims
OG exemplary drawing
 
1. An engine head, comprising:
an attachment portion configured to be attached to an end of a cylinder, such that a combustion chamber is defined by walls of the cylinder and the attachment portion;
an intake port and an exhaust port, each in communication with the combustion chamber;
an intake rotor system comprising:
a first plate comprising an opening therein, and
a first shaft fixed to and rotatable with the first plate,
wherein the intake rotor system is rotatable between a first closed position, in which the first plate closes the intake port, and a first open position in which the opening in the first plate allows passage of gas through the intake port; and
an exhaust rotor system comprising:
a second plate comprising an opening therein, and
a second shaft fixed to and rotatable with the second plate,
wherein the exhaust rotor system is rotatable between a second closed position, in which the second plate closes the exhaust port, and a second open position in which the opening in the second plate allows passage of gas through the exhaust port, and
wherein each of the first plate and the second plate comprise an aluminum body and an electroplating layer disposed on a lower surface of the aluminum body, wherein the electroplating layer comprises a nickel and silicon carbide plating.