Patent ID: 8360746
Filing Date: 2013-01-29
Classification: F04B,F04C,Y10T

Abstract:
1. A valve assembly for relieving fluid pressure, comprising: a pump housing having a pump chamber, a low pressure inlet chamber, and a high pressure discharge chamber; a relief aperture positioned between said low pressure inlet chamber and said high pressure discharge chamber for fluid communication therebetween; a valve seat along the perimeter of said relief aperture facing said high pressure discharge chamber; a valve body located entirely in said high pressure discharge chamber, said valve body having a length coaxially aligned with said relief aperture and a first end capable of engaging said valve seat, wherein said valve body is capable of axial travel at a predetermined pressure between a first position wherein said first end is engaged with said valve seat and a second position wherein said first end is positioned a distance away from said valve seat; wherein said valve body has an orifice at said first end to internally vent said valve body to said low pressure inlet chamber; and wherein a first rotor and a second rotor are disposed in said pump chamber for pumping oil from said inlet chamber to said discharge chamber.