Internal combustion engine cylinder puppet valve having self-aligning guide
Patent 5503123 Issued on April 2, 1996. Estimated Expiration Date: May 1, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A cylinder head assembly for an internal combustion engine includes self-aligning valve guides which are movable radially and coaxially to a variety of locations in which the axes of the valve guide and valve guide bore formed in the cylinder head are all parallel. The final location of the valve guide is determined by the contact relationship between the valve head and its mating valve seat.