Abstract: A cutter head includes a first member, a cutting bit, and a second member. The first member includes a first end and a second end and includes a first mass. The cutting bit is coupled to the first member proximate the second end. The cutting bit includes a cutting edge rotatable about the axis. The second member is rotatable about the axis and includes a second mass eccentrically positioned with respect to the axis. Rotation of the second mass causes the first member and the cutting bit to oscillate.

Abstract: The present invention provides, for use in a personal computer having a chassis with an electrical interface configured to form a connection with an electrical apparatus that extends externally from the chassis, an electrical connector protection device. The protection device comprises an electrical connector guard movably coupled to the chassis adjacent the interface to move between a retracted storage position and an extended guard position with respect to the chassis. The electrical connector guard, when in the extended guard position, is configured to guard and protect the electrical interface and the electrical apparatus from sustaining damage when the two are connected together by extending under a portion of the electrical apparatus, to thereby guard and protect the electrical interface and the electrical apparatus from sustaining damage.