Abstract: Material handling apparatus for use in loading large heavy and/or cumbersome articles such as concrete slabs, wall segments or other articles of like configuration on a mobile vehicle and transporting and installing the same comprising a frame-work supporting an overhead platform mounting article loading means and incorporating means for laterally shifting, tilting and vertically adjusting said platform as needs require.

Abstract: An output speed-controlled transmission comprising an input shaft, an output shaft and adjustable drive means through which said input shaft drives said output shaft. Means are provided in association with the output shaft and responsive to the rotational speed thereof; the last mentioned responsive means being operatively related to the drive means to adjust the drive means to maintain a predetermined rotational speed condition of the input shaft.

Abstract: An integrated stereo speaker system in which substantially non-directional bass sounds of low frequency are supplied exclusively to an enclosure common to right and left channels. Directional sounds in mid-range and higher frequencies are supplied to separated right and left treble speaker means with respect to which the common bass enclosure is preferably in a co-planar central position. Drivers within the common bass enclosure are mounted to minimize vibration effects and to obviate standing wave and bass cancellation effects. Treble speaker means may comprise multiple drivers related to each channel which occupy a vertical polarized axis for minimal distortion and best stereo effect.

Abstract: A stimulator device for insertion in a living body, having particular advantage for intracardiac use comprising a housing having a body formed for transvenous or transarterial insertion, electrode means at the outer surface of said body, means included in said housing defining a pulsing circuit electrically connected with said electrode means and ;means for activating said pulsing circuit embodied in said housing, said activating means being free of physical connection with an outside power source and dependent for its function on the living body in which it is inserted.

Abstract: A die system wherein upper and lower die shoes have a basic generally standardized form and are adapted for an interchangeable mount of various sub-assemblies embodying different die tools. The system features means facilitating a precise and quick location of a sub-assembly on its related die shoe as well as a quick release thereof. The invention further provides a unique pressure cell for backing the material being worked in a manner to insure optimal performance of the die and a quality work product.

Abstract: A spring unit comprising spring means, a cage for the spring means, and means to control the path of movement of the spring means within the cage having in association therewith means to apply a required pre-load on the spring means within the cage.In preferred embodiments of the caged spring assemblies, the open spaces between the coils of a contained spring are reduced to a dimension less than that of the thickness of the coils themselves. This prevents the coils from winding or screwing and from materially affecting the prescribed pre-load in event of spring breakage.

Abstract: Separating and thickening apparatus, particularly advantageous for use in processing pulp, characterized by an apertured duct preferably of U-shape and rectangular cross-section. The duct is distinguished by closely spaced walls and incorporates removable screen segments which are readily accessible and easily replaced. The apparatus is so contrived to enable a highly efficient, high capacity, dewatering or thickening structure which requires no moving parts.

Abstract: A telecommunications signal amplifier comprising an active tripole the transfer function of which has a negative real portion, the input impedance and the output impedance of which are substantially equal to one another and to the iterative impedance of the line in which the amplifier according to the invention is inserted, a first dipole of defined structure, a second dipole of structure reciprocal to the first with respect to the iterative impedance of the circuit in which the amplifier according to the invention is inserted, characterised in that said signal amplifier is reduced to a tripole by merging an input terminal and an output terminal, the other input terminal is connected to a terminal of said first dipole and to an input terminal of said tripole, the other output terminal is connected to the other terminal of said first dipole and to an output terminal of said tripole, the common input and output terminal of this tripole being joined, by means of said second dipole, to the common input and output