Birdwell
David Birdwell, Garland, TX US
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20150344802 | POSITIVE FRICTION CONTROL COMPOSITION FOR RAILWAYS - A friction control composition having high and positive factional properties for sliding steel surfaces includes a water insoluble hydrocarbon that enables a reduced water content, a rheological additive, a freezing point depressant, a friction modifier, and a lubricant. | 12-03-2015 |
Jane Birdwell, Pensacola, FL US
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20110120360 | Fitted tablecloth - A method for making a fitted tablecloth for covering a utility or card table is disclosed. The steps include providing a primary panel having a plurality of sides, providing a rail panel having a plurality of side panels and a plurality of pleats, such that the plurality of side panels are separated by the plurality of pleats, folding the plurality of pleats against the plurality of side panels such that the plurality of side panels meet at a plurality of joints, connecting the primary panel to the rail panel such that the plurality of side panels are connected to one another at a plurality of top joints, and stitching the side panels from the plurality of top joints to a portion of the side panel forming an inner seam. | 05-26-2011 |
Kenneth Birdwell, Bellevue, WA US
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20160124502 | SENSORY FEEDBACK SYSTEMS AND METHODS FOR GUIDING USERS IN VIRTUAL REALITY ENVIRONMENTS - Sensory feedback (“chaperoning”) systems and methods for guiding users in virtual/augmented reality environments such as walk-around virtual reality environments are described. Exemplary implementations assist with preventing collisions with objects in the physical operating space in which the user acts, among other potential functions and/or uses. | 05-05-2016 |
Larry Birdwell, Vancouver, WA US
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20120080194 | METHOD AND APPARATUS FOR CAPTURING OIL LEAKING FROM AN UNDERWATER WELL - A system for capturing oil leaking from an underground well includes an elongate hollow tube which is deployed vertically in the water with its open lower end located above the oil well. A system for securing the tube in the desired location where it captures the maximum amount of leaking oil includes an adjustment system which allows the tube to be moved transversely once it is in place. A method is provided for erecting the tube and anchoring it at the desired location above the leaking well. | 04-05-2012 |
Michael Derek Birdwell, Jacksonville, TX US
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20160025257 | Covering for Underground Pipes and Related Methods - The present invention relates to the protection of underground utilities, such as pipes and cables. The invention provides a protective coating for underground pipes and cables that is flexible, waterproof, durable, and cable of withstanding many different stresses. | 01-28-2016 |
Steven Birdwell, Houston, TX US
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20090036728 | METHOD FOR SOLIDIFYING HIGH MOISTURE SLUDGE, SOLIDIFIED SLUDGE THEREFROM - A method for treating a high water content sludge is disclosed, where the method includes mixing into the high water content sludge, an effective amount of an ash composition. The effective amount of the ash composition is sufficient to convert a portion of the sludge and the ash composition into a treated sludge including an amount of a solidifying matrix to impart properties to a depth of the sludge sufficient to support commercial construction equipment. A treated sludge and sludge pits are also disclosed as is the ash composition used to form the treated sludge. | 02-05-2009 |
20110203338 | METHOD FOR SOLIDIFYING HIGH MOISTURE SLUDGE, SOLIDIFIED SLUDGE THEREFROM - A method for treating a high water content sludge is disclosed, where the method includes mixing into the high water content sludge, an effective amount of an ash composition. The effective amount of the ash composition is sufficient to convert a portion of the sludge and the ash composition into a treated sludge including an amount of a solidifying matrix to impart properties to a depth of the sludge sufficient to support commercial construction equipment. A treated sludge and sludge pits are also disclosed as is the ash composition used to form the treated sludge. | 08-25-2011 |
20130263758 | STABILIZED RED MUD AND METHODS OF MAKING THE SAME - A stabilized red mud composition containing red mud generated as a by-product of the Bayer process reduced to a water content of less than or equal to about 65% and an effective amount of an ash composition to convert the red mud and its water content into a reaction product suitable as a construction material and methods of making the same. | 10-10-2013 |
Steven R. Birdwell, Houston, TX US
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20140249346 | PROCESS FOR STABILIZING WASTE - The process for stabilizing wastes generally comprises blending spent or virgin fullers earth with a hazardous or non-hazardous sludge, soil or sediment to form a matrix. Next, the matrix is blended with a reagent capable of growing a calcium silicate hydrate or Ettringite mineral. In this manner a more stable, less leachable product is formed. | 09-04-2014 |
William A. Birdwell, Portland, OR US
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20100065110 | Method and Device for Converting Solar Power to Electrical Power - A solar-to-electrical power conversion device. The conversion of broad energy band solar power to electrical power is accomplished by taking advantage of the fluorescence properties of materials that absorb solar power over a relatively broad range of energies and shift at least a portion of that power to emitted radiation over a relatively narrow range of energies at which the efficiency of a photovoltaic device is maximized. The absorbing material is fashioned to confine the emitted radiation so as to direct the emitted radiation to a photovoltaic device to convert that emitted radiation to electrical power. Preferably the absorbing material is the active medium of a solar-pumped laser, such as a fiber laser, that produces the emitted radiation. To absorb solar radiation while preventing unwanted emission of radiation at the nominal laser energy, the absorbing material is coated to be highly reflective at the nominal laser energy and highly transmissive over a relatively broad band of solar energy so as to absorb the broad band of solar energy yet couple emitted radiation to the photovoltaic device. | 03-18-2010 |