Smith International, Inc.

Andrew Corporation

Richard D Smith

Weng-Kwen Raymond Chia

Michael S Oliver

Richard D Crouse

A three cone rock bit is disclosed having at least a pair of mini-extended nozzles extending from a dome portion of the bit. Two 120.degree. leg segments contain extended nozzles, a third 120.degree. segment is nozzleless. The mini-extended nozzles convert hydraulic pressure to kinetic fluid flow energy with a minimum of flow disturbance, thereby delivering a concentrated flow of fluid against the floor of the formation and across the cutting face of the bit, sweeping detritus past the nozzleless 120.degree. leg segment and up the borehole. A centerjet mini-extended nozzle may additionally be positioned in the rock bit dome to further enhance borehole penetration.

Crossflow rotary cone rock bit with extended nozzles

A spring hanger system for supporting a UHF circular waveguide from a transmission tower and including a plurality of vertically spaced spring hangers, each adapted to engage an adjacent section in the vertical run of waveguide in the tower. Each hanger includes a glide ring fixed to the tower for restraining the waveguide from movement in any direction except vertical; a clamping ring spaced axially below the glide ring which is adapted to grip the outer periphery of the waveguide snugly without distorting same, whereby the waveguide is stiffened against deformation by lateral forces in the region of the glide ring; and a spring mechanism connecting the glide ring and the clamping ring with a substantially constant force which allows the waveguide to move in response to differential expansion with respect to the tower.

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Lakewood, CA, United States of America

Richard D Smith