Abstract: A lockable zipper closure includes at least one slider with a pulling tab that has an opening therein, and means such as a T-shaped column for locking the zipper in the closed position, that is movable from a position in which the column may pass through the opening to a position in which the column will not pass through the opening, and means for locking the column in the position where the column cannot pass through the opening.

Abstract: An instrument panel is provided having a plurality of band indicators, one for each parameter being measured, arranged consecutively adjacent one another in a common direction on the panel, all displaying an output indication by movements of their respective bands in the same direction transversely of the alignment direction. The bands of each instrument also move adjacent a color coded marker, indicating a safe operating region for the parameter being measured, a "caution" region, and one where the measured parameter is beyond acceptable values. The instruments are calibrated and initially located to give readings about a single threshold line or band such that when the eyes are directed toward this mean, not only can the individual readings of each of the instruments be quickly determined, but also a relative or comparative reading of all the instruments may be readily made.

Abstract: At least two groups of scanning coils are arranged with respect to the surface of metal parts to be tested at different angles. Means are further provided for oscillating at least one group of scanning coils in a direction generally perpendicular to the normal direction of travel of the scanning coil. Optionally, the exciter windings are rectangular, circular or oval.

Abstract: A hydraulic pump particularly suited for the extracorporal circulation of blood, having a readily replaceable and disposable pumping member is disclosed. The pump avoids injury to the blood cells and creates a minimum of turbulence during the pumping operation, thus limiting the buildup of fibrin.

Abstract: Flexible diaphragms mounted on the ends of a shaft contact a liquid to be dispensed (e.g., syrup bases). A chamber is located about the shaft side of each diaphragm, which chamber is in communication via shaft passages with outlets in the shaft wall. A valving member is slidingly received on the shaft and interconnected with a source of pressurized gas by a flexible hose. The valving members transfers from a position where one opening is in communication with the pressurized gas and the other opening is exposed, to a second position where the relationship of the shaft openings to the valving member is reversed. A pair of opposed coil openings urge the valving member past the longitudinal shaft center to reverse direction after the coils are sufficiently loaded, which results when the valving member is at the end of either shaft stroke.

Abstract: A straightedge having incremental markings along two opposite edges, the spacing of the markings being progressively decreased toward a theoretical vanishing point to provide a perspective scale. The straightedge has a rigid spine, with two edge members of transparent material on which the graduations are marked. The edge members are offset toward opposite faces of the spine, so that when one member is held flat on a work surface, the other member is raised above the surface, allowing the raised edge to be used to guide or support a pen, brush, or the like without the ink or other fluid marking material running under the edge. The raised edge may be rocked into contact with the work surface and the upper edge serving as a guide or support. In a further manner of use, the straightedge facilitates rapid basic layout of a perspective drawing, such as an architectural rendering.

Abstract: An improved extrusion apparatus for extruding a tube of soft thermoplastic material of improved consistency and homogeneity is provided. A double walled piston having an annular chamber between the inner and outer annular walls thereof is mounted for sliding longitudinal movement between the interior wall of the apparatus housing and a longitudinal core disposed in the housing. The thermoplastic material fed into the apparatus first enters the annular piston chamber which, even during upward and downward movement of the piston, remains constant.

Abstract: The magnetic gradient detector has two magnetic field sensors with their magnetic axes arranged parallel to an imaginary line. The sensor electrical outputs are connected with one another such that an electrical signal is created corresponding to the gradient of the magnetic fields present at the respective locations of the sensors. Each sensor has its core suspended on a wire under tension which maintains the parallelism constant. The wires are adjustable to establish initial parallelism or correct for subsequent misalignment that may occur.

Abstract: A representative reading for the concentration of a suspension of luminous and magnetizable particles is provided in every case, even when luminous but non-magnetizable particles are also present. That is, the presence of non-magnetizable luminous particles in the suspension have no effect on the determination. A rotating wheel-like member has its lowermost portions immersed in a supply of the magnetic particle suspension in a fluid carrier. The circumferential periphery includes a permanent magnet having a gap extending continuously around the periphery and covered over by a plastic rim. As the wheel-like member rotates, the magnetic particle suspension forms a bead along the magnet gap. Ultra violet radiation directed onto the bead causes the magnetic particles to fluoresce and the degree of fluorescence is measured by photosensitive means.

Abstract: The luggage case construction has a first open sided shell over which a cover is removably secured. The shell includes bottom, top and two end walls interconnected by a rectangular back wall. An elongated frame member extends continuously along the inner top wall surface, both end walls and for a distance inwardly of the end walls onto the bottom wall. The frame is centrally located within the shell and includes a pair of parallel rib-like elements integrally related by a wall portion via which it is riveted to the luggage case shell. At each of the corners of the luggage case sheel and in the central portion immediately under the handle of the top wall there are provided sheet-like elements between the channel and the luggage case walls. The sheet-like members extend transversely of the luggage case an amount equal to the total case width, such that when the cover is closed over the shell and the secured in place, the sheet-like member establishes a firm case width.

Abstract: The shower spray apparatus has a hollow housing with three spray exit openings in a common face, two for normal spray and the third for pulsating spray. Incoming pressurized water is fed into a diverter which includes a slide valve adjustable to proportion the flow of water along either of two paths exclusively, or in a continuous variable range between the two paths. The first path of fluid flow from the slide valve terminates in the two normal spray exit openings, while water flowing along the second flow path drives a turbine and exits via openings in the pulsating outlet. The rotating turbine includes a mask which sequentially covers and uncovers the spray outlet to provide the pulsating output. A knob on the spray apparatus housing is adjustably rotatable to operate a slide valve throughout a full range of adjustment, providing either all normal spray, all pulsating spray or any ratio therebetween.

Abstract: A first preformed case section with front and bottom panels and top, bottom and side flanges is joined by a hinge with a second case section constructed of two unitarily related preformed parts defining a top, back and end panels. A pair of individual latching mechanisms interconnect the end panels of the two case sections to one another. A locking-latch apparatus is provided on the top panel adjacent the handle, e.g., combination or key lock. With the second case section back wall resting on a horizontal support surface, the first case section on opening extends at 90.degree. to the first case section, with the bottom panel stably resting on the same support surface. Platelike retainers are located on the inner lower panel surface adjacent each end and serve to prevent long garments arranged therein from being clamped between the case section edges during closing.

Abstract: In reclaiming nutrients from manure, steps are taken to remove both insoluble and soluble ash components, thereby preventing their buildup to possibly dangerous levels when the reclaimed nutrients are used as recycled feed. After initial milling of the manure to a predetermined size, it is mixed with water or reflux brine to form a slurry. The manure-water slurry is released onto an inclined belt having a riffled surface moving in an upward direction while the slurry stream moves along a gravity path opposite the belt movement. The belt discharges ash at its upward side along with a small amount of fibers, feed mix, kernels, grains, and other organic matter. In this manner a major part of the undesirable inorganic, insoluble ash and a small amount of nutrient materials are removed from the manure. Alternatively, a centrifugal bowl classifier, an oscillating or pulsating jig screen, or preferably a shaking or concentrating table with riffles may be used.

Abstract: The luggage case has a pair of wheels located at a lower back edge such that when the case rests on a flat surface, the wheels are held spaced from the floor surface. On lifting the case side opposite that including the wheels, the wheels are brought into rolling contact with the floor. A handle assembly is foldably received into the side wall opposite that including the wheels and can be selectively folded outwardly into a position for pulling or pushing, or, when not in use, folded into a receiving recess formed in the case side wall. A spring-loaded latch mechanism secures the handle within the recess during nonuse, and a finger release enables selective extension of the handle outwardly from the case wall for easy access when it is desired to move the case.

Abstract: One end wall of a molded barrel of thermoplastic material has a general plane and is provided with at least two depressions at opposite diametric sides. A tubular portion is located in each depression and .Iadd.is .Iaddend.of one piece with the end wall, each of the tubular portions communicating with the interior of the barrel and terminating in the general plane. Reinforcing webs are provided in the respective depression at that side of the associated projection which faces at the middle of the one end wall and these reinforcing webs are each of one piece with the one end wall and the respective projection, bridging the respective depression.

Abstract: A non-destructive testing system for detecting longitudinal and transverse defects, simultaneously, in metallic tubes or pipes in which a plurality of essentially punctiform magnetic sensing elements are disposed along a generally straight line adjacent the workpiece surface. A mechanical oscillator reciprocates the sensing elements along a line parallel to that of the sensing elements disposition. Adjacent elements are electrically connected in opposition to form differential probe pairs, the line connecting the adjacent probes to form the differential pairs being inclined at 45 degrees to the line of reciprocation. In addition to providing for the simultaneous detection of longitudinal and transverse defects, the system disclosed can resolve the signals from ID and OD defects to a degree heretofore unobtainable.