Patent ID: 8020333
Filing Date: 2011-09-20
Classification: F41A,Y10T

Abstract:
1. A rigid composite structure, comprising: a tubular body, the tubular body having a first end, a second end, a longitudinal axis, and a first bore formed along the longitudinal axis, the tubular body being formed from a metallic material; and a plurality of segments, each of the segments having a first end face, a second end face spaced from the first end face, a center hole extending through the first end face to the second end face, and being formed from a super hard material selected from the group consisting of natural diamond, synthetic diamond, polycrystalline diamond, single crystalline diamond and cubic boron nitride, the plurality of segments being disposed adjacent one another within at least a portion of the first bore and with the center holes of the segments being aligned along the longitudinal axis to form a second bore that is substantially co-axial with the first bore, the plurality of segments including: