Patent ID: 9494087
Filing Date: 2016-11-15
CPC Classification: F02B,F02D,F16K

Claim Text:
1. A shutoff or regulating valve, comprising a valve body, a disc assembly, and a valve seat, said valve body having a fluid passageway therein through which air is enabled to flow to a combustion engine, said disc assembly including a disc member movable along an axis from an open position to a closed position and vice versa, said disc member being biased and configured when in said open position to be spaced from said valve seat to enable air to flow through said fluid passageway and when in said closed position to be in tight engagement with said valve seat thereby interrupting the flow of air through said passageway, said disc member being configured to be automatically rotated and moved to said closed position upon an overspeed condition of the combustion engine to cause the engine to shutdown, said valve seat comprising an anti-friction ring located within said valve body and having a central opening in fluid communication with said fluid passageway, said anti-friction ring being rotatably mounted within said valve body and arranged to be engaged by said disc member when said disc member is in said closed position, said anti-friction ring being able to rotate about said axis within said valve body when said engine is no longer in said overspeed condition, to thereby preclude said disc member from sticking to said ring, whereupon said disc member can reassume its open state.