Abstract: A prosthetic foot assembly includes an ankle member, a heel member pivotally connected to the ankle member, an elongate metatarsal-toe member having a rear portion underlying a forward portion of the heel member and projecting forwardly from the heel member. The metatarsal-toe member is pivotally connected to the heel member. A first compressible element is engaged between a portion of the ankle member and a portion of the heel member and a second compressible element having first and second substantially circular bearing surfaces engaged between a portion of the heel member and a portion of the metatarsal-toe member to resist upward pivotal movement of a forward end of the metatarsal-toe member relative to the heel member. A portion of the compressible element spaced apart from one of the bearing surfaces has a smaller diameter than the diameter of at least one of the first and second bearing surfaces.

Abstract: A prosthetic foot assembly, said assembly includes an ankle member, a heel member pivotally connected to the ankle member, an elongate metatarsal-toe member having a rear portion underlying a forward portion of the heel member and projecting forwardly from the heel member. The metatarsal-toe member being pivotally connected to the heel member. A first compressible element is engaged between a portion of the ankle member and a portion of the heel member and a second compressible element having first and second substantially circular bearing surfaces engaged between a portion of the heel member and a portion of the metatarsal-toe member to resist upward pivotal movement of a forward end of the metatarsal-toe member relative to the heel member. A portion of the compressible element spaced apart from one of the bearing surfaces has a smaller diameter than the diameter of at least one of the first and second bearing surfaces.

Abstract: A microwave flaw detector system and method are disclosed which include the use of a pair of parallel strip transmission lines which are located a parallel spaced distance from the surface of the test, or work, piece. The strip transmission lines are capable of supporting first and second orthogonal transmission modes, and means are included for supplying the same with a signal of the first mode. The strip transmission lines are located adjacent the surface of an object to be tested for flaws, and may be moved relative thereto for scanning the surface thereof for flaws. The test piece constitutes one ground plane for the pair of current-carrying strips within which return currents flow in a direction opposite to the strip currents. When a surface flaw on the test piece perturbs the ground plane current in the test piece under one strip, some of the power in the test piece is converted to a second mode orthogonal to the incident-mode current.

Abstract: An antenna comprises the combination of a biconical-horn and a circular waveguide. The major symmetry plane of the horn is horizontal and the horn describes a figure of revolution about the major axis of the circular waveguide. Coupled to the one wall of the horn with its axis perpendicular to the horizontal symmetry plane of the horn is the circular waveguide. A TEM coaxial port on the vertical axis of the horn is provided at the vertex of the cone forming the surface of the biconical-horn. Two orthogonal-ports are provided in the circular waveguide with two respective TEM transmission lines extending from within the circular waveguide outside of these ports to provide at their outputs the TE.sub.11 modes.

Abstract: This magnetic head construction includes two or more elements defining a transducing gap which are positioned and held together within a shell by a wedge.The magnetic head assembly disclosed normally includes a shell structure, a pair of transducer elements defining a transducing gap, a wedge and a wedge follower. The wedge follower may be present as either a separate element or as a surface carried by one of the transducer elements. The assembly is normally formed by the process of disposing the transducer elements, and the wedge follower, if present, within the shell wall, and then rough positioning these elements within the shell, followed by the insertion of the wedge against the wedge following surface to bring the parts into final position in a locked relationship. Generally speaking, locking is achieved by selecting the wedge angle, .theta. as a function of the coefficients of friction of the mating surfaces according to given formulae.