Patent ID: 6405750
Filing Date: 2002-06-18
Classification: B60G,F16F,Y10T

Abstract:
A valve assembly for controlling flow of fluid through a bore in a housing, the valve assembly comprising:a body with a first end, a second end, and a intermediate section with a surface for engaging the housing when the body is located in the bore and with an aperture through the intermediate section, the body including a passage extending there through; a check valve member attached to the body and closing the aperture when pressure in the bore adjacent to the second end is greater than pressure in the bore adjacent the first end; a relief valve assembly moveably attached to the body to form an opening at one end of the passage, the relief valve assembly having a first position at which the opening has a first cross sectional area when pressure in the bore adjacent to the second end exceeds a predefined level, and under other pressure conditions having a second position at which the opening has a second cross sectional area that is smaller than the first cross sectional area.