Patent ID: 6298869
Filing Date: 2001-10-09
Classification: F16K,Y10S,Y10T

Abstract:
A reverse buckling polymer rupture disk for mounting in a fluid flow line having a predetermined inside diameter and comprising:a thermoformed polymer rupture disk having an annular flange and a raised center portion, both having a predetermined thickness;said raised portion having an upstream convex side and a downstream concave side and being reverse buckling when pressure is applied to the upstream convex side thereof; andat least one score line cut in the thermoformed polymer rupture disk to create a line of weakness that forms a predetermined burst pattern when rupturing under a predetermined pressure applied to said upstream convex side;at least one score line cut in the thermoformed polymer rupture disk to create a line of weakness that forms a predetermined burst pattern when rupturing under a predetermined pressure applied to said upstream convex side;a skirt formed on an outer portion of said annular flange and extending perpendicular to the plane of said annular flange to center the polymer rupture disk in said fluid flow line; andan orifice in said annular plate having a diameter that is less than the fluid flow line inside diameter and that forms an offset shoulder on the downstream side of said thermoformed polymer rupture disk with respect to said fluid line inside diameter to enable said thermoformed polymer rupture disk to rupture along said score line and form said predetermined burst pattern.