Abstract: A solid masonry and hollow block fastening device that uses two expansion collars to secure a fastening thereof in varied masonry materials. In greater particularity, the two expansion collars are interconnected by a bridge of a unitary construction therewith in order to enhance the strength and holding power thereof when mounted on masonry material.

Abstract: An expert system is organized according to Bayes' theorem. The system includes a diagnostic module that generates a diagnosis in the form of probability distributions. The diagnostic module also is responsive to evidence in the form of discretized time trajectories in the value space of the observable variables. The diagnostic module is also responsive to data from a knowledge base that represents the trajectories of the possible states of the system and the associated values of the likelihood that the various trajectories of observed evidence would be present if the system were in that state.

Abstract: An anchoring assembly and method for securing a threaded elongate member such as a bolt or screw in a material engaging position in a preformed hole in a relatively frangible material. The anchoring assembly is formed of a threaded elongate member and coil surrounding and engaging at least some of the threads of the elongate member and extend beyond the outer transverse boundary of the elongate member. The elongate member is formed with a reduced diameter preferably tapered entry end, a threaded body portion, and preferably a headed head end. The coil is formed of a uniform cross-section wire having a diameter permitting the coil to seat on the threaded body portion of the elongate member. An anchoring tab or tang having a thickness less than the diameter of the wire forming the coil is formed on at least one end of the coil with a thickness preferably between 90% and 110% of half the difference in diameter between the maximum outer diameter of the elongate threaded member and the outer diameter of the coil.

Abstract: An anchoring device for securing a member to a wall, particularly where there is access to only one surface of the wall. The anchoring device employs a toggle plate having a threaded opening therein, with the toggle plate dimensioned to fit into a hole through the wall to which it is desired to secure the member. An elongate engaging element coupleable to the member to be secured to the wall and dimensioned of a size to extend through the wall opening into the toggle plate opening is provided. At least a portion of the engaging element is flexible so that at least a part of the engaging element may be bent into a plane parallel to and in sufficiently close proximity to the toggle plate to permit the toggle plate and engaging element to be simultaneously inserted through the wall opening, with the toggle plate thereafter assuming a position perpendicular to the engaging element and subject to being drawn up on the engaging element against the wall.

Abstract: An anchoring device is disclosed providing engaging means for an attaching member which it is desired to secure with respect to a wall, particularly when there is access to only one surface of the wall. The anchoring device may be formed to provide either secure friction engagement, or threaded engagement with an attaching member, such as a bolt, screw, nail, or friction pin, normally used to fasten an item of hardware or the like to a wall. The anchoring device comprises a toggle plate dimensioned for insertion into a blind opening in the wall to which attaching is desired and an elongate runner is pivotally secured to the toggle plate which may be shaped to form its own hole in the wall member. One or more openings dimensioned to engage the attaching member is formed in the toggle plate.