Patent ID: 7658243

Claim:
A system for preventing slippage and rotation of components installed in a tubular housing of a drill string during drilling operations, the system comprising: a tubular housing member in communication with a drill bit, the tubular housing member comprising an interior surface, a first end, a second end configured for attachment to a mud motor, and a shoulder proximate to the second end; an adjustable member secured to the tubular housing member proximate to the first end; at least one component installed in the tubular housing member between the shoulder and the adjustable member, wherein said at least one component covers a first portion of the interior surface while leaving a second portion of the interior surface uncovered; and at least one spacing member disposed between the shoulder and the adjustable member, wherein said at least one spacing member covers substantially all of the second portion of the interior surface, wherein the adjustable member is tightened such that the adjustable member and the shoulder apply a compressive axial load to said at least one component and said at least one spacing member, and wherein the compressive axial load creates frictional forces between said at least one component and said at least one spacing member greater than a maximum torque expected to act on the tubular housing member, such that said at least one component remains stationary with respect to the tubular housing member during drilling operations for enabling said at least one component to affect the orientation of the drill bit.