Abstract: Apparatus for reducing to particles tread portions and beaded side wall portions of vehicle tires, particularly extra large vehicle tires, or for preparing such vehicle tires for recapping, comprises a tire holder assembly, having a paired set of dual jacks carried by opposite ends, respectively, of elongate, rigid, tire clamping frames, and a rotary, cutter blade assembly made up of a side-by-side series of disks carrying cutter blades of chisel type offset from one another to provide a helically oriented series of such cutting blades. Opposite side and end members of each of the frames provide for clamping corresponding side wall beads of a received tire, while opposite ends of opposite end members of the respective frames, usually clamping corners thereof, span respective chords of the circumferences of corresponding beads of the tire.

Abstract: A color negative photographic film with at least one color record thereof having a mid-scale contrast less than or equal to 0.45, wherein the mid-scale contrast for the color record is defined as the slope of a straight line connecting a point C and and a point D on the characteristic curve of density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively. Use of such a color negative film is particularly advantageous in making telecine transfers.

Abstract: Color negative photographic films having red, green and blue color sensitive records, wherein the ratio of the toe area contrast to the mid-scale contrast for each of the red, green and blue color records is less than or equal to 0.80, and either at least two color records having a toe-area contrast less than or equal to 0.42 or a mid-scale contrast less than or equal to 0.55, or the film having a speed rating of ISO 200 or greater. The mid-scale contrast for a color record is defined as the slope of a straight line connecting a point C and and a point D on the characteristic curve of Status M density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively.

Abstract: An ionomer suture exhibits excellent properties. The suture may be monofilament or multifilament, and methods of making and using the suture are disclosed.

Abstract: A higher order polyamide monofilament suture exhibits improved properties such as greater resistance to creep, greater knot security and greater chemical stability in aqueous environments.

Abstract: A method for suturing a wound using a suture manufactured from polyamide ester having the reaction product of at least one molecular weight diols; at least one dicarboxylic acids and at least one polyoxyalkylene diimide diacid to create a wound closure.

Abstract: A polyamide monofilament suture of reduced energy and/or increased knot security is prepared by extruding a monofilament from polyamide resin, stretching the monofilament and annealing the stretched monofilament.

Abstract: A higher order polyamide monofilament suture exhibits improved properties such as greater resistance to creep, greater knot security and greater chemical stability in aqueous environments.

Abstract: A gliding decelerator and an assembly for use therein for improving the l to drag ratio associated therewith. In a preferred embodiment, the gliding decelerator includes a ram-air canopy shaped to include a plurality of half-cells, each half-cell having an open leading end and a closed tailing end. Inflatable bladders are secured within the respective half-cells of the canopy, the inflatable bladders being appropriately dimensioned so that, when inflated soon after the canopy has been opened, each bladder fills its respective half-cell in such a way as to stiffen the half-cell both along its length and at its open leading end. The inflatable bladders may be inflated simultaneously or in stages, the inflation means comprising a gas source, a flexible manifold connecting the gas source to the half-cells and valve means for controlling the output of the gas source. Control of the valve means may be automatic, e.g., a timer, a remote control unit, or may be controlled by a parachutist, e.g.

Abstract: An apparatus for reducing extra large vehicle tires to particles or to prepare them for recapping comprises a tire holder assembly, made up of a set of dual jacks, in combination with a rotary cutter blade assembly made up of a side-by-side series of discs carrying cutter blades of chisel type. The set of dual jacks are preferably carried by an arbor having opposite shaft ends adapted to matingly interconnect with corresponding ends of a motivating shaft for quick and easy interchange of one size tire holder assembly for another size. When the tire is to be recapped, arcuate attachments are secured to members of the tire holder assembly that contact a tire bead so as to preserve the circumferential integrity of such bead during cutting, and the cutter blade assembly is replaced by wire buffing brushes following removal of the tread portion of the tire by cutting.

Abstract: A filament is fabricated from a biologically acceptable blend of an ionomer resin such as an ionically crosslinked ethylene-methacrylic acid copolymer and a nonionic thermoplastic resin, e.g., a polyolefin such as an isotactic polypropylene.

Abstract: A process for manufacturing polyamide monofilament suture includes the steps of extruding a polyamide resin, stretching the solidified monofilament and annealing the stretched monofilament so that it shrinks to within about 80 to about 97 percent of the length of the monofilament prior to annealing. The polyamide monofilament sutures so produced exhibit reduced energy compared to conventional polyamide monofilament sutures.

Abstract: A polyetherimide suture exhibits excellent properties such as resistance to creep, great knot security and physical stability. The suture may be monofilament or multifilament, and methods of making and using the suture are disclosed.

Abstract: A process is provided for manufacturing a polypropylene monofilament suture exhibiting reduced strain energy, increased knot security and greater resistance to acquiring an in-storage set.

Abstract: Feeding structure for tire shredding apparatus comprises a set of studded rollers defining a feed mouth opening into a feed throat that leads into the tire shredding mechanism. Forwardly placed lower and upper rolls rotate at different speeds, the upper faster than the lower and preferably having its studs configured to provide sharp points for penetrating into the tire and positively advancing it rearwardly toward the shredding mechanism. An endless conveyor carries individual tires sequentially into the feed mouth flatwise and the throat preferably slopes downwardly to present each tire to, but tilted backwardly from, the shredding mechanism. The rolls are mounted in a protective cover for the shredding mechanism, which cover is pivoted, so as to rise and fall in accordance with tire thickness, and is mounted on shock absorbers and preferably in supplemental, pivot supporting brackets.

Abstract: An apparatus for pyrolyzing shredded tires including an oven having a discharge opening and a tote having a discharge snout corresponding to the opening, the tote being placed in the oven with the snout inserted into the opening, radiant heating tubes are provided in the oven in close proximity to the top and bottom of the tote to heat the shredded tires, the tote having an inclined top for directing gaseous vapors produced on heating the tires toward the snout, the gaseous vapors are drawn through a discharge duct assembly and condenser by a fan located at the exhaust from the condenser.

Abstract: A process and apparatus for recovering the material components of rubber tires, the process including the steps of shredding the rubber tires to a size capable of being transported, heating the shredded rubber pieces in an inert atmosphere to a temperature sufficient to vaporize the heat recoverable components of the tires, condensing the vaporizable components to liquify the oil and ammonia present, collecting the uncondensed gas, and recovering the carbon residue and metal remaining after cooling. The apparatus including a hot air oven having a plurality of hot air conduits defining a primary heating zone and a top wall configuration defining a gas collection zone and a tote bin formed by a closed container having an opening at one end and a top wall configuration conforming to the top wall of the oven.

Abstract: A crude oil product is extracted from a tar sand by first crushing the tar sand as mined and then fine grinding the crushed material in a grinding mill in the presence of a cleansing liquid, such as an aqueous solution of a caustic. The resulting slurry is passed into suitable extractor-classifier equipment, such as that shown in U.S. Pat. No. 3,814,336, in which a body of cleansing liquid is maintained. Agitation of the slurry in such maintained body of cleansing liquid substantially completes removal of the bituminous matter from the sand, and the resulting crude oil and cleansing liquid phase is discharged separately from the sand solid phase. The liquid phase is treated for the removal of residual sand particles and for the separation of residual cleansing liquid from the crude oil. The cleansing liquid so recovered is recycled and the crude oil is passed to further processing or for use as such.

Abstract: A shredder structure, components, and sub-combinations thereof, useful for shearing, shredding, and/or chopping a variety of materials such as municipal and industrial solid waste products, vehicle tires, and other materials desired to be comminuted. The hopper of the structure is preferably hinged to provide easy access to the made-up shaft. The shaft carries a series of rotating bladeholders keyed to the shaft and provided with radial protrusions and contiguous slots accommodating fitted-blade placement. The rotating bladeholders are spaced apart by spacers which serve not only to mutually space the rotating bladeholders, but also to support the sides of the rotating blades so as to form with the bladeholder slot pockets or seats for such blades. Particular support structure is used for the stationary blade employed, with which the individual rotating blades on each bladeholder co-act.

Abstract: A shredding apparatus including a housing or hopper and a shredding assembly positioned within the housing or hopper. The shredding assembly including a cutter bar assembly and a rotary blade assembly. Each of the assemblies including a number of identical cutter blades which are interchangeable with each other and are individually reversible. The cutter bar assembly also including a cutter bar positioned in abutting engagement with one end of each of the cutter blades mounted on the cutter bar assembly. The cutter bar including cutting edges on each side so it can be reversed with respect to the cutter blades. The cutter blades on the rotary cutter bar assembly are arranged to shear waste material at a downwardly and outwardly inclined angle so that the cutter blade acts to draw or pull waste material into the shredder assembly. The hopper or housing being provided with an easy access door on the front wall which can be pivoted outwardly from the hopper.