Patent ID: 7789136

Claim:
A downhole tool, comprising: a non-metallic mandrel, formed of a polymeric composite material reinforced with fibers in layers angled at about 30 to about 70 degrees relative to an axis of the mandrel and an element system disposed about the mandrel, the element system comprising: a first support ring, comprising: a plurality of wedges, detachable from the first support ring and radially expandable; a first expansion ring, disposed adjacent the first support ring and flowable to fill gaps formed between the expanded plurality of wedges of the first support ring; a first cone, disposed adjacent the first expansion ring; and a sealing member disposed adjacent the first cone, wherein the first cone is formed of a polymeric composite material reinforced with fibers in layers angled at about 30 to about 70 degrees relative to an axis of the first cone wherein the polymeric composite material comprises an epoxy.