Abstract: A resonant sensor probe assembly includes a substrate formed from one or more dielectric materials and free-standing electrodes coupled with the substrate. The free-standing electrodes are configured to be placed into the fluid and to generate an electric field between the free-standing electrodes. A controller measures an impedance response of the sensor to the fluid between the electrodes to determine an aging effect of the sensor.

Abstract: A chair having a chair back with an enlarged and curved seating surface is described. The raised seating surface has a front to back dimension (depth) substantially similar to its left to right dimension (width) approximately 0.80 meters. The seating surface is further curved upwardly on the left and right sides relative to the front to back center of the seating surface. In one variation, the radius of curvature pertaining to the curve is approximately 0.5 meters.

Abstract: A chair having a chair back with an enlarged and curved seating surface is described. The raised seating surface has a front to back dimension (depth) substantially similar to its left to right dimension (width) approximately 0.80 meters. The seating surface is further curved upwardly on the left and right sides relative to the front to back center of the seating surface. In one variation, the radius of curvature pertaining to the curve is approximately 1.0 meters.

Abstract: A bicycle fork having a steerer tube assembly having top and bottom steerer tube sections wherein the length of the steerer tube assembly is adjustable by interchanging top steerer tube sections of differing lengths is described. The top and bottom steerer tube sections include one or more meshing teeth and valleys that facilitates the transfer of torque when the top and bottom steerer tube sections are joined together.

Abstract: A combination triathlon aero handlebar and stem assembly or handlebar assembly is described that permits the adjustment of the height and tilt of the elbow platform and the associated left and right tubular hand extensions relative to a main body thereof.

Abstract: A bicycle fork having a steerer tube assembly having top and bottom steerer tube sections wherein the length of the steerer tube assembly is adjustable by interchanging top steerer tube sections of differing lengths is described. The top and bottom steerer tube sections include one or more meshing teeth and valleys that facilitates the transfer of torque when the top and bottom steerer tube sections are joined together.

Abstract: A combination triathlon aero handlebar and stem assembly or handlebar assembly incorporating several innovations is described. Clamp bolt sections for securing the extension bars are located behind a streamlined spacer to reduce frontal area. The design of the extension bar clamps permit tightening and loosening from above through the elbow rest platforms without the removal of the platforms. Streamlined height spacers used to adjust the height of the extension bars include a groove along their trailing edges in which a wire from a electronic shifter can be received. The stem portion of the includes an internal cavity in which the junction box of a electronic shifting system can be received. The streamlined stem height spacers include a path to receive and pass the front brake cable and housing therethrough and include slots that permit the removal and installation of a spacer without disconnecting and unthreading the brake cable.