Abstract: An extendable fitness bar including an internal elastic member. The device includes two, hollow external bars with ends facing one another. On the interior of the two external bars is an internal bar and an elastic member that extends through the two external bars and the internal bar. The elastic member is attached to the far end of the first external bar and the second external bar. The user can grasp each external bar and separate them, exposing the interior bar and creating a longer continuous bar. This separation also causes the elastic member to stretch creating tension. The user may also twist the two bars in opposing directions (clockwise and counterclockwise) for additional stretches.

Abstract: A method and tool to smooth surface contours uses a fixed back plate mounted at a known distance to an actuator holding plate. Each of the actuators is mounted in said actuation holding plate by a support collar threaded into said actuator holding plate. Threaded with said support collar is an actuator holder with rigidly holds an actuator. A differential threaded adjustment device is then inserted through said fixed back plate and connected to say support collar and actuator holder so that each can be moved independently of the other. The actuator is made of two piezoelectric plates connected in parallel and seperated by a silicon rubber o-ring.

Abstract: A method and tool to smooth surface contours uses a fixed back plate mounted at a known distance to an actuator holding plate. Each of the actuators is mounted in said actuation holding plate by a support collar threaded into said actuator holding plate. Threaded with said support collar is an actuator holder with rigidly holds an actuator. A differential threaded adjustment device is then inserted through said fixed back plate and connected to say support collar and actuator holder so that each can be moved independently of the other. The actuator is made of two piezoelectric plates connected in parallel and seperated by a silicon rubber o-ring.

Abstract: A method and tool to smooth surface contours uses a fixed back plate mounted at a known distance to an actuator holding plate. Each of the actuators is mounted in said actuation holding plate by a support collar threaded into said actuator holding plate. Threaded with said support collar is an actuator holder with rigidly holds an actuator. A differential threaded adjustment device is then inserted through said fixed back plate and connected to say support collar and actuator holder so that each can be moved independently of the other. The actuator is made of two piezoelectric plates connected in parallel and separated by a silicon rubber o-ring.