Abstract: A system and method for measuring the value of a parameter, e.g. sound energy, at a plurality of spaced locations using electrically powered microcells positioned at each of the locations and for transmitting RF signals commensurate with control and measurement data between a control node and the microcells, all without physical connection of a wiring harness, or the like, for either powering or signaling. The microcells and control node are mounted to an elongated, tubular member through which a single, insulated conductor and a coaxial cable in coupled mode extend, in proximity to the spaced microcells. The insulated conductor is connected to a source of AC power and passes through the open centers of current transformers which inductively couple the AC power to each microcell. A phase locked loop at each microcell controls the frequency of the AC power provided to the sensing element, thereby controlling the sampling rate.

Abstract: An improved elastomeric gasket comprising a silicone elastomer coated with a parylene layer is disclosed. The parylene is selected from one of the parylene C, parylene N,parylene D, and mixtures thereof and applied to reduce the surface energy of the elastomeric material.

Abstract: A latch for releaseably securing one body portion, such as a hood, to another body portion, such as a cowl, of a semi-tractor or the like. One of the body portions has a hook member mounted thereon and the other carrys a securing device. The latch is of one-piece molded construction comprising an elongate elastomeric member having a handle at one end, an opening therein adjacent the handle and a tongue in the opening extending from the handle toward the other end, the handle and tongue being integral with the elongate member. The free end of the tongue is adapted for engaging the hook member, and an opening is provided at the other end of the elongate member for connection to the securing device. The free end of the tongue is spaced from the opening a distance less than the distance the hook member is spaced from the securing device when the two body portions are adjacent one another and the elongate member is untensioned.

Abstract: Hole alignment probes utilizing strain gages spaced 90.degree. apart to indicate the extent and direction of misalignment of holes disposed in substantial alignment.