Patent ID: 8277141

Claim:
An apparatus used with an indirect fire weapon, comprising: a member with a ball end, a socket, and wherein the ball end of the member is insertable in the socket, and wherein the member further comprises a base cap, and said socket further comprises a socket cap, and; wherein the base cap includes a longitudinal axis, the ball end, a bell end, and a handle mounting face, and; the ball end includes a generally spherical surface having a center C and a diameter D, the generally spherical surface being truncated at both axial ends and including first and second pairs of opposed flats and a pair of opposed curved surfaces that join respective ones of the first and second pairs of opposed flats; the generally spherical surface includes a fifth flat having a bisecting plane that is orthogonal to a bisecting plane of the first and second pairs of opposed flats, the fifth flat lying in a plane angled at about 45 degrees with respect to a plane that 1) contains the longitudinal axis of the base cap and 2) is orthogonal to a plane containing the handle mounting face, and; wherein the ball end of the member is insertable in the socket at only a single combination of traverse angle and elevation angle of the member.