Combustion engine valve system

Details Combustion engine valve system Combustion engine valve system

2007-10-30

2007-10-30

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Four-cycle

Rotating valve

C123S190600, C123S190800

Reexamination Certificate

active

11504537

ABSTRACT:
A valve system for a combustion engine that includes at least one combustion chamber is disclosed. The combustion chamber includes an intake port and an exhaust port. The valve system includes cylindrical valve shaft, the cylindrical valve shaft having a cylindrical surface, a central axis along the cylindrical valve shaft and containing at least two recessed areas, the recessed areas being at one hundred eighty degrees to one another along the axis of the valve shaft, the recessed areas extending approximately ninety degrees about the axis and along the cylindrical surface, or about 25 percent of the surface.

REFERENCES:
patent: 6443110 (2002-09-01), Qattan

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