Patent ID: 8690637

Claim:
A flex-arm device comprising: a base; a support block attached to the base, the support block comprising a front and a rear that together define a shaft aperture and a channel extending perpendicular to the shaft aperture that intersects the shaft aperture; a shaft rotationally engaged with the shaft aperture of the support block, the shaft selectively lockable to the shaft aperture; a set member extending through the channel that decreases the width of the channel and the shaft aperture with the shaft in a locked orientation; a flex-arm mount connected to the shaft for rotation therewith about a first axis of rotation; a flex-arm rotationally engaged with the flex-arm mount for rotation about a second axis of rotation perpendicular to the first axis of rotation; a measuring block attached to the shaft for rotation therewith about the first axis of rotation, the measuring block comprising a top surface; and a grinding wheel mounted on the flex-arm and coordinated with the top surface of the measuring block such that, as the flex-arm mount is rotated about the first axis of rotation, angles of inclination of the grinding wheel and top surface of the measuring block with respect to a surface upon which the device is mounted are substantially equivalent; wherein the shaft is in an unlocked orientation when a width of the shaft aperture allows free rotation of the shaft within the shaft aperture such that the flex-arm mount may be angularly displaced about multiple positions, and the shaft is in the locked orientation when the set member reduces the width of the shaft aperture, which frictionally restricts free rotation of the shaft within the shaft aperture.