Abstract: This invention for use with a water-using system is directed to a heat recovery and storage device adapted to recover heat from warm waste liquid and transfer it to cooler supply water where the flows of both waste liquid and supply water are intermittent and not necessarily contemporaneous, and to store the warmed supply water until required for use.
Type:
Grant
Filed:
January 17, 1995
Date of Patent:
April 21, 1998
Inventors:
John G. Thompson, Wilfred L. Harris, Jr.
Abstract: A ballistic resistance multi-structure material having multiple layers. The material has at least one layer of hard surfaced ballistic resistant woven material, at least one layer of ballistic nonwoven material and one layer ballistic nonwoven material with at least one layer of a plurality of deflection devices embedded within. The deflection devices are adjacent one another and have a ballistic deflecting geometric. The path of a bullet is diverted by crushing the structure of the bullet, altering the angle of the path of projection or stopping the penetration of the bullet beyond the layer of multiple geometric shapes. In a further embodiment, for use with lasers, the ballistic deflecting geometric shapes have a reflective surface. A reflective layer can be placed adjacent the layer of geometric shapes, reflecting laser beams away from the user's body.
Abstract: A geothermal heat transfer system having a plurality of heat exchange loops placed in the ground, each loop having an out flow line and a return line connected by a U-turn juncture. A heat exchange device connects to the loops through the inlet and outlet lines. A refrigerant charge control system selectively provides either heating or cooling heat transfer to or from a temperature regulated area. A charge control flow control device maintains a single flow direction of refrigerant within charge control system, while refrigerant flow reverses direction elsewhere in said heat pump system. A plurality of check valves are employed to provide the flow control. A float and stop valve system maintains a sufficient quantity of refrigerant in the condenser and evaporator of the heat pump for optimum design performance.
Abstract: The device is a diagnostic tool for the determination of the functional loss of the collateral ligaments of the elbow. The device serves to position and to stabilize the arm of a subject and to position the elbow in a predetermined fixed position to allow for X-raying of elbow joints under graded pressure. A first part of the device is a unit for receiving a hand and securing the wrist in a predetermined position. The hand receiving member has a planar upright support section which has a plurality of spaced holes. Preferably, the spaced holes are arranged in a plurality of parallel rows. The device includes a first rod shaped member or roller positioned in a hole such that it is contacted by the palm of the hand, with the palm upward in supination. The wrist is secured to a second rod or roller mounted in another of the holes, to hold the wrist in a predetermined position relative to the second roller. A third roller is provided such that the wrist is locked in position between the second and third rollers.
Abstract: A basketball game area for recreation consisting of multiple zones, each having at least one hoop and backboard combination, multiple shooting indicators, and obstacles which can be free standing, and/or affixed to the hoop or backboard. The location of the obstacle in relation to the indicator changes the trajectory required to shoot the ball into the hoop. The placement of each indicator increases the difficulty in placing the ball through the hoop. The game rules provide the order of proceeding through the courts and proceeding through the sequential shooting indicators within each of the courts. The first player proceeds to the first courts, attempting to shoot the ball through the hoop, avoiding the obstacle, scoring points for placing the ball through the hoop. The players continue shooting one at a time until all players have taken a shot at the first basket from each of the indicators and then continue to proceed through the courts.
Abstract: A particular uncommon isomer of retinoic acid (namely 11-cis-retinoic acid, or neotretinoin) is useful in treating conditions involving abnormal cellular differentiation and hyperproliferation, such as psoriasis. A new method of synthesizing this isomer, in quantities that has allowed it to be compared therapeutically with the more commonly available all-trans and 13-cis isomers, is presented. As measured on the inventor's own psoriasis-affected skin, topical treatment with 11-cis-retinoic acid is much more efficacious in reducing symptoms and has substantially reduced side effects, as compared to topical treatment with the other isomers. A single application of a 0.001% neotretinoin cream to psoriasis lesions leads within 48 hours to substantial amelioration of associated dermatological symptoms, including itching, scaling, bleeding, and abnormal appearance.
Abstract: The method of testing the affect of neuroactive agents on cellular receptors is disclosed. The procedures comprise decapitating an invertebrate, in the disclosed tests a Drosophila melanogaster is used. A selected neuroactive agent is applied directly to the severed nerve cord of the invertebrate. The reaction of the invertebrate is observed in response to the application of the agent. The reaction of the invertebrate is an indication of the activities of the cellular receptors which react to the specific agents. The tested agents include dopamine, serotonin and octopamine and vertebrate drugs that act as D1-like receptor agonists, D1-like receptor antagonists, D2-like receptor agonists and D2-like receptor antagonist, and a vertebrate monoamine oxidase inhibitor. Other types of neuroactive agents are also used.
Abstract: This invention pertains to a method of modifying the reproduction rate of cells by exposing the cells to north directional unipolar magnetic fields, thereby decreasing the reproduction rate of the cells. The reproduction rate of the cells can also be modified by exposing them to south directional unipolar magnetic fields, thereby increasing the reproduction rate of the cells.
Type:
Grant
Filed:
June 7, 1994
Date of Patent:
January 20, 1998
Assignee:
Bio Magnetics Systems, Inc.
Inventors:
Walter C. Rawls, Jr., Gregory J. Provell
Abstract: The instant invention discloses a method of treating hyperactive voiding associated with excessive nerve growth factor production and nerve growth in patients by administering a Ca.sup.++ channel blocker. The Ca.sup.++ channel blockers verapamil and diltiazem can be administered systemically to treat hyperactive voiding, such as is associated with benign prostatic hyperplasia and interstitial cystitis.
Abstract: The invention relates to a composite cushioning system for protecting articles, packaged within a box, from damage while being transported in the box. The composite structure includes an expansion sheet of expanded slit sheet, in combination with a separator sheet. The expanded sheet has a slit pattern which produces open cells, preferably of a hexagonal configuration. The separator sheet precludes the nesting of legs and lands of the slit sheet with other slit sheet of the same slit pattern. A variety of combinations of separator sheets and expansion sheets can be used, such as a pair of expansion sheets with a separator sheet between the pair of expansion sheets, or two such pairs of expansion sheets, with or without a separator sheet between the pairs. The separator sheet can be unslit, or tear-perforated or slit to accommodate expansion. Where the separator sheet is slit, the slits preferably produce the same amount of expansion as produced in the expansion sheets.
Abstract: A filling material for use in filling hollow spaces in packaging or the like comprising one or more pieces of flexible paper material. The paper material has a plurality of individual slits formed in parallel spaced rows extending transversely from one end of the paper material to the opposing end of the paper material. The slits in adjacent alternate rows are positioned adjacent the interval space between adjacent slits in the adjacent parallel row of slits. The flexible paper material is expandable by extending the opposing ends of the paper material which are parallel to the rows of slits whereby the slits form an array of openings, each opening being generally hexagonal in shape and of the same size. The length and width of the flexible filling paper material can be varied. The construction of the flexible paper filling material provides it to be easily stored in the non-expandable position and easily expanded for use in filling hollow spaces in packaging.
Abstract: A personal protection device is disclosed with a mixing area and mixing nozzle. A fluid container rests on a moveable container base having a nozzle which extends into the mixing area. The fluid container can be a two portion flexible ampule or a canister. A two part glowing fluid is used, which is mixed prior to expulsion from the device. An irritative substance is placed in one of the mirror image sections. A compression device is maintained in a non-compressed position when unarmed and is activated by a trigger and locking device. A battery receiving area is connected to the internal electronics, trigger, alarm and light. A moveable safety latch is proximate the trigger preventing access to the trigger when in the unarmed position and allows access when in the armed position. A safety cap is held in the unarmed position by a reset bar. A plug portion in the safety cap is dimensioned to fit within mixing area nozzle.
Abstract: The invention relates to the treatment fluid secretion caused by Cholera toxin that can be blocked through the administration of PAF antagonists BN 52021 and SR 27417.
Type:
Grant
Filed:
June 7, 1995
Date of Patent:
June 17, 1997
Assignee:
University of Virginia Patent Foundation
Inventors:
Richard L. Guerrant, Guodong D. Fang, Manasses C. Fonteles
Abstract: The geothermal heat transfer system comprises a plurality of heat exchange loops placed in the ground at an angle of less than a 20 degrees, but greater than a 5 degrees. Each loop has an out flow line and a return line, and a fluid tight, tapered and, U-turn juncture connecting the lines. A pair of distributors connects to inlet and outlet lines at a lower end and a plurality of outlet members at the upper end. A heat exchange device connects to the loops through the inlet and outlet lines. A liquid-oil-gas separator uses cup member and deflector to create a Venturi fluid inlet to separate the oil, returning it to the compressor. A bore hole drilling device comprises an hollow drilling bit with a cutting member at one end, a central fluid passage, and connecting means. The bore hole drilling device has a swivel member with a body portion and housing with a central bore and an inlet, connect to a water line. The body is position within the central bore and mounted for rotational motion within the housing.
Abstract: An interactive multi-station medical specimen analysis system for simultaneously analyzing a medical specimen at remote locations and accessing, for evaluation, the results of each of the analyses at a central laboratory is disclosed. The system comprises a server for storing databases. A central laboratory, interacts with the dedicated computers through the server to review, evaluate and either accept or reject specimen analyses. Communication means connect the server with the plurality of dedicated computers, laboratory computer and a centralized mainframe. Analytical instrument to dedicated computer interface software interprets the instrument language into the computer program language and the computer program language into the instrument language. Dedicated computer interactive means request analytical tests, transmit the test results to the server databases and receive and display data from the server databases.
Type:
Grant
Filed:
November 22, 1994
Date of Patent:
May 20, 1997
Assignee:
University of Virginia
Inventors:
Keith S. Margrey, Robin A. Felder, James C. Boyd, J. William Holman, John Savory
Abstract: The present invention is a passband-type waveguide filter in which a periodic distortion is employed which has a sinusoidal, or alternately configured, distortion, which changes phase at a point along the periodic distortion. The passband filter comprises essentially any waveguide, designed as a waveguide, with a periodic distortion added to at least one of the sides of the waveguide. The waveguide can be a rectangular cross section metallic microwave type, cylindrical, elliptical, or microstrip. The waveguide may be optical, a SAW type waveguide or any waveguide of the prior art. In a preferred embodiment a waveguide structure supports propagation of a wave along the waveguide, the waveguide structure containing a boundary and the waveguide structure containing a filter portion having a portion of said boundary with a sinusoidal distortion following:f(z)=1+A sin (k.sub.w z) for 0<=z<=L/2f(z)=1-A sin (k.sub.
Abstract: The chemical vapor deposition of hydridospherosiloxane to generate films of SiO.sub.2 at low temperatures on substrates that cannot withstand high temperatures. The chemical vapor deposition process synthesized compounds with the general formula,(HSiO.sub.3/2).sub.n,with n being an even number ranging from 8 to a very large number. More particularly, it relates to the vapor deposition of oligomeric hydrogensilsesquioxanes, henceforth referred to as hydridospherosiloxanes. The hydridospherosiloxanes are used directly in a chemical vapor deposition reactor to generate films of SiO.sub.2 at low temperatures on substrates that cannot withstand high temperatures. Hydridospherosiloxanes and soluble hydrogensilsesquioxane resin are produced having the formula(HSiO.sub.3/2).sub.n,where n is an even integer greater than 8.
Type:
Grant
Filed:
November 8, 1993
Date of Patent:
January 14, 1997
Assignee:
Virginia Tech Intellectual Properties, Inc.
Inventors:
Seshu B. Desu, Chien-Hsiung Peng, Tian Shi, Pradyot A. Agaskar
Abstract: A case is disclosed for protecting small objects, such as glasses, by providing heat and breakage resistance. The case has an exterior pocket, with a drainage area; a protective case; and a liner. The exterior pocket consists a pocket flap, a body front, and a pair of gussets. The pocket flap is provided with closure means to secure the pocket flap to the body front. The protective case is a rigid, hollow, non-circular cylinder having one closed end and dimensioned to provide a friction fit within the pocket. The protective case can be formed from mirror image halves provided with sealing seams which extend at right angles to the cylinder and a first to break point. The liner is a hollow, non-circular cylinder manufactured from a non-abrasive, cushioning material approximately twice the length of the protective case. Optionally, the case is provided with a belt attachment loop to affix the case to a user's belt.