Patents Assigned to Battelle Development Corp.
  • Patent number: 5077094
    Abstract: A process for applying a metal coating 11 to a metal strip substrate 2 by preheating the casting surface in a non-oxidizing atmosphere and maintaining a casting surface temperature T.sub.s below the solidus temperature of the metal coating material, passing the casting surface through a melt pool 9 of the metal coating material at a pool temperature at least 25.degree. C. in excess of its melting temperature to deposit a melt layer 21 at a casting temperature T.sub.c, and simultaneously rapidly cooling the metal strip substrate from the back surface to solidify the melt layer to an adherent solid coating, wherein the surface temperature T.sub.s is less than about 20 percent (in .degree.K.) below the casting temperature T.sub.c.The process is particularly useful when coating metal strip with an alloy of limited solubility metals.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: December 31, 1991
    Assignee: Battelle Development Corp.
    Inventors: James L. McCall, Robert E. Maringer
  • Patent number: 4531402
    Abstract: The invention provides apparatus and method for measuring the concentration of large particles in a gas which may also contain small particles. The apparatus comprises a triboelectric charging means which effects triboelectric charging of the large particles in the gas, and charge measuring means for measuring charges on the particles in the gas after it has passed the triboelectric charging means. The triboelectric charging means can be a curved section of an air intake duct or the compressor of a turbocharger. The apparatus enables the operation of an engine or other air consuming device to be interrupted when the concentration of large particles in the incoming air is sufficient to damage the engine, but avoids unnecessary shutdowns due to the presence of small particles, e.g. smoke particles, which are too small to damage the engine or other device.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: July 30, 1985
    Assignee: Battelle Development Corp.
    Inventors: Robert B. Reif, Loren R. Albrechtson
  • Patent number: 4512879
    Abstract: A concentrate containing precious metals is produced from a particulate feed material containing particles of various sizes by a size fractionation step, a gravity separation step performed on each size fraction separately, a magnetic separation step and a second gravity separation step. The process is especially intended for separating gold and other metals from so-called "black sand" placer deposits.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: April 23, 1985
    Assignee: Battelle Development Corp.
    Inventors: Yosry A. Attia, Ted L. Tewksbury
  • Patent number: 4477396
    Abstract: Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: October 16, 1984
    Assignee: Battelle Development Corp.
    Inventor: William H. Wilkinson
  • Patent number: 4337625
    Abstract: Absorption cycle refrigeration processes and systems are provided which are driven by the sensible waste heat available from industrial processes and other sources. Systems are disclosed which provide a chilled water output which can be used for comfort conditioning or the like which utilize heat from sensible waste heat sources at temperatures of less than 170.degree. F. Countercurrent flow equipment is also provided to increase the efficiency of the systems and increase the utilization of available heat.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: July 6, 1982
    Assignee: Battelle Development Corp.
    Inventor: William H. Wilkinson
  • Patent number: 4333515
    Abstract: Sensible waste heat from industrial or other sources is boosted to useful temperature levels by combining at least one Rankine vapor generation cycle with at least one solution heat pump cycle. Waste heat is first utilized to boil off refrigerant in the Rankine cycle evaporator to provide a source of relatively high pressure vapor to an absorber in the solution heat pump. In the absorber, the vapor is contacted with a working solution of absorbent and refrigerant. As the refrigerant vapor is absorbed into solution, its latent heats of condensation and solution are given off at a temperature higher than the temperature of to a process (boosted output) stream the waste heat source. The working solution is then throttled to a relatively low pressure desorber where a portion of the refrigerant is desorbed as vapor from the solution by the further use of waste heat. The desorbed refrigerant vapor is then condensed and pumped to the evaporator for reuse.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: June 8, 1982
    Assignee: Battelle Development Corp.
    Inventors: William H. Wilkinson, William T. Hanna
  • Patent number: 4290993
    Abstract: A method for producing "dogbone" filament fibers having nodules at each end comprising rotating a heat extracting disk having an edge tapering to a narrow peripheral surface and having the peripheral surface notched at intervals with each notch comprising a leading edge, connected to a trailing flat surface, the trailing flat surface supporting an expanded land on the peripheral edge; introducing the rotating disk into the surface of a pool of molten material to form a film of the material on the edge; and removing heat from the film and at least partially solidifying the film on the edge. By the method, the segmented filament fiber products which are produced have a nodule formed on the leading end, a nodule formed on the trailing end, and continuous fiber inbetween, with the general appearance of a dogbone.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: September 22, 1981
    Assignee: Battelle Development Corp.
    Inventor: Robert E. Maringer