Patent ID: 6903647

Claim:
A bobbin assembly for a solenoid valve comprising: a bobbin formed from an electrically insulative material and having pair of flanges formed upon the ends thereof, each of said flanges extending in a radial outward direction from said bobbin, said bobbin also having an axial bore formed therethrough, said bore being stepped with the inside diameter of one end of said bore being less than the inside diameter of the other end of said bore with the two inside diameters defining an axial shoulder within said bore; and a first flux ring formed from a magnetically permeable material having a high heat conductivity, said flux ring having an annular base portion and a tubular sleeve extending axially into an end of said bobbin bore; and a second flux ring formed from a magnetically permeable material having a high heat conductivity, said second flux ring extending axially into the other end of said bobbin bore and contacting said shoulder formed within said bobbin bore.