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US 10,690,020 B2Granted
Vertical sliding valve arm
OwnerMichael D. Barberinventor
Life of this patent
Estimating the term…
Abstract
Improvements in a vertical sliding valve arm has been disclosed with systems and methods related to eliminating the common pivot-type rocker arm and reversing the use of the valve spring in internal combustion engines. More specifically, the camshaft lobes activate a sliding valve arm to close the engine valve instead of opening it and the valve spring is used to push open the valve instead of closing it.
Claims18
A system of valve actuation by way of a rotating camshaft comprising:
- a rotating cam pushing up on a valve lifter and a pushrod to contact a horizontal sliding arm;
- said pushrod is pivotably connected to an arm on said horizontal sliding arm;
- the horizontal sliding arm contacts the pushrod on a first end of the horizontal sliding arm and is lifted by the pushrod;
- an engine valve is attached on the other end of the horizontal sliding arm, whereby a rise and a fall of the horizontal sliding arm opens and closes the engine valve;
- a spring is mounted on top of the horizontal sliding arm between the pushrod and the engine valve such that when the horizontal sliding arm rises, it compresses the spring and when the horizontal sliding arm is lowered, the spring becomes uncompressed and provides a force to open the engine valve and also provides a second force to keep the valve lifter in contact with the rotating cam.
2 more elements
Dependencies are inferred from the claim text.