초록 ▼

A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti-extrusion section prevents extrusion of the

A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti-extrusion section prevents extrusion of the body section.

대표청구항 ▼

[ What is claimed as invention is:] [1.]1. An anti-extrusion sealing device for use in an enclosed area subject to line fluid force, comprising:an upper, line fluid force set extrudable body section, said upper extrudable body section having formed from an extrudable material and having an upper end

[ What is claimed as invention is:] [1.]1. An anti-extrusion sealing device for use in an enclosed area subject to line fluid force, comprising:an upper, line fluid force set extrudable body section, said upper extrudable body section having formed from an extrudable material and having an upper end, said upper end including a top in contact with the fluid force and an inner and an outer sealing surface opposing each other depending downward from said top and contacting the enclosed area subject to fluid force and said upper extrudable body section having a lower portion depending downward from said sealing surfaces;a lower anti-extrusion section having an upper portion and a bottom, said bottom having a bottom surface, said lower anti-extrusion section in contact at said upper portion to said lower portion of said upper extrudable body section and said bottom surface abutting the enclosed area, said lower anti-extrusion section serving to resist extrusion forces acting on said sealing surfaces adjacent said lower anti-extrusion section, said lower anti-extrusion section being comprised of a knitted material, at least some of the filaments of said knitted material being metallic in nature, said upper portion having inner and outer radial edges facing the enclosed are and an upper surface having at least a partial V-shape in cross-section between said radial edges;said upper extrudable body section having a lower end with a lower portion having a lower surface shaped for reception in said upper surface of said lower anti-extrusion section upper portion and said sealing surfaces extending radially beyond said edges prior to application of the fluid force;said lower anti-extrusion section bottom including a portion below said V-shape upper surface of sufficient axial thickness to permit rotation of said radial edges and said upper surface so that said radial edges contact the enclosed area in response to normal fluid force applied to said upper surface, whereby upon application of the fluid force from the enclosed area upon said top, said radial edges rotate into contact with the enclosed area adjacent to said sealing surfaces, forming an anti-extrusion seal for said extrudable material of said sealing surfaces.