Abstract: The disclosed line guides combine a wear resistant ring with a superelastic, shape memory alloy frame and support to provide a lightweight and durable assembly. The wear resistant ring is constructed of hard material such as ceramic. The wear resistant ring includes a groove or annular depression on the outside surface where the ring and frame meet. The elastic frame is configured to grip the ring, which provides an enhanced mechanical connection between the wear resistant ring and the superelastic frame. The groove also provides a location for the application of adhesive. The frame is exposed around the wear resistant ring and protects the ring from damage during storage, transportation and use. The superelastic alloy frame and support flex to absorb shock and when deformed rebound to their original shape.

Abstract: A magnetically assisted coupling comprises at least two shaft segments. Each shaft segment has opposed ends and a hollow core. Adjacent segment ends are configured in a probe/socket configuration such that one segment end is configured to receive the adjacent segment end. Magnets of opposite polarity are mounted within said hollow core of adjacent segment ends, such that the magnet in the socket is positioned at a bottom of the socket, while the magnet in the probe defines a probe end. When adjacent segment ends are brought into close proximity the magnets attract each other and draw the probe end into the socket until the magnets are in contact.

Abstract: A magnetically assisted coupling comprises at least two shaft segments. Each shaft segment has opposed ends and a hollow core. Adjacent segment ends are configured in a probe/socket configuration such that one segment end is configured to receive the adjacent segment end. Magnets of opposite polarity are mounted within said hollow core of adjacent segment ends, such that the magnet in the socket is positioned at a bottom of the socket, while the magnet in the probe defines a probe end. When adjacent segment ends are brought into close proximity the magnets attract each other and draw the probe end into the socket until the magnets are in contact.