Other

William H Peck

Wayne C Crouch

A light-weight, collapsible, single or multi element rhombic antenna is disclosed having at least two wire antenna elements for receiving and transmitting electromagnetic waves. The antenna elements are supported in a rhombic shape by an antenna frame. The frame includes four nonconductive legs extending radially outwardly from a center support. At least one of the legs is detachably engaged to the center support. Each leg has a nonconductive cross arm support orthogonally mounted to its outwardly extending end for supporting the antenna wire elements in parallel rhombic formations. An integrated feed network combines the electromagnetic waves. A translation device is coupled to the integrated feed network to convert the electromagnetic waves into a desired output signal. The antenna can be mounted on a mast for either horizontally or vertically polarized operation.

Collapsible single or multielement rhombic antennas

Apparatus for separating liquid from solids contained in a liquid-solid slurry includes a centrifugal concentrator which is supplied with feed slurry, and a centrifugal separator to which the output of the concentrator is conducted. The concentrator includes a rotatable central slurry reservoir having outlets discharging slurry under centrifugal force in streams nominally following spiral flow paths. Spirally-curved perforate vanes rotated with the reservoir and intersect respective slurry streams at acute angles. A fractional portion of the fluid in the slurry is removed by filtration as each stream intersects and then flows along a spirally-curved perforate vane, thereby to provide concentrated slurry, which is supplied to the separator. The separator includes a high-speed rotatable carrier, which carries eccentrically-disposed filter baskets independently rotatable at low speeds about their own axes. Each basket includes a base plate, and spirally-curved perforate vanes mounted on and extending outwardly from a central region of the base plate. A reservoir having restrictive outlets for discharge adjacent to the inner ends of respective vanes is mounted in juxtaposition to the central region of each basket, for rotation with the basket. Concentrated slurry from the concentrator is supplied to each basket reservoir, is discharged from the reservoir outlets, and flows radially outwardly of the carrier axis of rotation under the application of centrifugal force, when the carrier is rotated. With the concurrent flow rotation of each basket about its axis, the slurry is filtered substantially over the full length of each basket vane, with liquid passing through the vane and solids being retained on the vane surface, for discharge therefrom separately from the filtrate.

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Montclair, CA, United States of America

William H Peck