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| Number | Title | Issue Date |
| 4159942 | Method and apparatus for separating particles The method for separating particles having mixed density and/or size, comprises dispersing the particles in a fluid stream, passing the fluid stream into a housing which causes the fluid stream to be diverted from its original direction, and capturing cer... | 07/03/1979 |
| 4145087 | System for hydraulically transporting solid material In transporting solid material of a wide particle size distribution ranging from small to large size particles, a liquid is added to the solid material as a transporting medium to convert the solid material into a slurry to be hydraulically transported. T... | 03/20/1979 |
| 4133746 | System and method of controlling froth flotation A method and system of maintaining substantially steady state conditions in a froth flotation operation. In the method an aqueous pulp of finely ground ore particles continuously flows into a flotation cell and is continuously aerated by admission of air ... | 01/09/1979 |
| 4113608 | Apparatus for separating non-magnetic materials of different densities An apparatus for separating non-magnetic materials of different densities, which apparatus includes a material separating portion, in which a magnetic fluid is retained in a magnetic field having a gradient in a vertical direction. In this apparatus, a si... | 09/12/1978 |
| 4111210 | Trash-freeing rear cross-conveyor for tomato harvester An improved trash separation mechanism at the rear cross-conveyor assembly of a tomato harvester. A frame of the harvester supports a centrally located fruit collecting conveyor for delivering fruit rearwardly to the rear cross-conveyor assembly. A blower... | 09/05/1978 |
| 4094771 | Process for preparation of a sprayable precipitated silicic acid suspension A silicic acid filter cake and suspension agent are fed to a container equipped with a stirrer having a peripheral speed of about 20-30 m/sec. The ratio of container diameter to stirrer diameter is about 3:1. The ratio of container diameter to level of fi... | 06/13/1978 |
| 4085037 | Process for separation of non-magnetic particles with ferromagnetic media Particles of different densities are separated from admixture by ferrohydrodynamic movement in a liquid magnetic medium into zones thereof and retained in said zones upon solidification of said liquid medium.... | 04/18/1978 |
| 4073661 | Process for cleaning comminuted plastic material A continuous process for cleaning and preparing grossly soiled products of plastic material, such as sheets, bands, sacks or the like for subsequent re-use, in which the plastic material is comminuted after removing rough foreign objects therefrom, wherea... | 02/14/1978 |
| 4066536 | Particle size separation by suspension flow in an unobstructed passageway Particles suspended in a fluid medium are separated into isolated fractions by size by passing a suspension of such particles through an unobstructed passageway, the particles emerging from the passageway in decreasing order of size.... | 01/03/1978 |
| 4062768 | Sieving of materials Sieving apparatus comprising a sieve carrier, means for imparting longitudinal vibratory movement to the sieve carrier said movement having substantially no vertical component, a sieving medium, a sieve frame to which said sieving medium is secured and su... | 12/13/1977 |
| 4062765 | Apparatus and process for the separation of particles of different density with magnetic fluids Separation of a mixture of non-magnetic particles on the basis of their different densities is accomplished by levitation in a magnetic fluid using a multiplicity of magnetic gaps created by a grid of magnetic poles oriented with respect to each other suc... | 12/13/1977 |
| 4052297 | Materials handling apparatus for a ferrofluid sink/float separator This invention is directed to a scheme for increasing the height of a ferrofluid column in a ferrofluid sink/float separator by judiciously locating the access openings into the column of ferrofluid so that said opening is on a predetermined air-ferroflui... | 10/04/1977 |
| 4032438 | Method and apparatus for ultrasonically removing contaminants from water Apparatus employing an ultrasonic focusing transducer is provided for removing a contaminant such as oil which is floating on the surface of a body of water. The transducer is supported beneath the water surface with its focal region aimed at the undersid... | 06/28/1977 |
| 4032436 | Particles sizing Sieve analysis and fineness modulus of particles are adjusted in bulk, without breakdown into size fractions and reblending to tailor a feed product for a given application such as asphalt sand or concrete sand by adjusting the rate of largest size cut an... | 06/28/1977 |
| 4025448 | Superparamagnetic wax compositions useful in magnetic levitation separations Superparamagnetic wax compositions useful in magnetic levitation separations of particle mixture based on density differences are provided which have the ability to withstand without phase separation repeated melt-freeze cycling. The stability is obtained... | 05/24/1977 |
| 3997435 | Method for selecting hollow microspheres for use in laser fusion targets Hollow microspheres having thin and very uniform wall thickness are useful as containers for the deuterium and tritium gas mixture used as a fuel in laser fusion targets. Hollow microspheres are commercially available; however, in commercial lots only a v... | 12/14/1976 |
| 3992286 | Mineral ore concentractor A desirable metal such as gold in a low grade ore has its concentration increased by electro-kinetically separating gangue from other components in the ore to form a concentrate. Separation is effected by inducing movement of externally conductive particl... | 11/16/1976 |
| 3951784 | Fine powder classification by ferrofluid density separation A method of separating small diameter non-magnetic particles of different densities by using a low magnetic saturation ferrofluid and a high magnetic gradient to produce levitation by overcoming the magnetic attraction of the particles. Application of a c... | 04/20/1976 |
| 3951785 | Classification by ferrofluid density separation A method of separating non-magnetic particles of different densities by using a ferrofluid to produce levitation wherein compensation is made for the magnetic attraction or interaction of the particles by removing particles too small for the desired sharp... | 04/20/1976 |
