Patents by Inventor Albrecht Melber

Albrecht Melber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210184284
    Abstract: The disclosure relates to a method for opening up electrochemical energy storage devices in connection with a subsequent recovery of valuable materials contained therein as secondary raw materials, in which method the energy storage devices are opened up by means of a thermal treatment system to remove the electrolytes and reactive substances, before the thermally treated material is subjected to processing, whereby secondary raw materials in the thermally treated material are separated from one another. The thermal treatment is performed in an indirectly heated furnace 2 under atmospheric pressure conditions or a slight overpressure relative to the ambient pressure of up to 20 mbar in a reducing atmosphere, and influence is exerted on the course of the thermal treatment process via the reducing atmosphere, as a control variable.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 17, 2021
    Inventors: Reiner SOJKA, Albrecht MELBER
  • Publication number: 20210184283
    Abstract: A method for breaking down electrochemical energy storage devices in conjunction with a subsequent reclamation of recyclable materials contained therein as secondary raw materials. The devices are broken down by a thermal treatment in a negative pressure environment in a process chamber to remove electrolyte and reactive substances, before the thermally treated material is subjected to downstream processing, by which the secondary raw materials are separated from one another. After introducing a batch of storage devices, in a first process step, the process chamber is evacuated with simultaneous heating of the devices to a first temperature level such that electrolytes in the devices evaporate and, due to the resulting vapor pressure, the devices are opened, wherein produced process gases containing electrolytes in the vapor phase are withdrawn from the process chamber.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 17, 2021
    Inventors: Reiner SOJKA, Albrecht MELBER
  • Patent number: 6616724
    Abstract: For the evaporation of given components from initial multiple-substance mixtures and systems at subatmospheric pressure, individual portions (P1, P2, P3, P4, P5) of the multiple-substance mixture and systems are placed in ring crucibles (17) stacked at several levels. Vapors of the lower-boiling component are drawn off through a vapor exhaust opening in each crucible, while the top ring crucible (17) is closed except for its vapor exhaust opening.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 9, 2003
    Assignee: Ald Vacuum Technologies Aktiengesellschaft
    Inventors: Manfred Raschke, Wilfried Goy, Franz Hugo, Erwin Wanetzky, Albrecht Melber
  • Publication number: 20020046626
    Abstract: For the evaporation of given components from initial multiple-substance mixtures and systems at subatmospheric pressure, individual portions (P1, P2, P3, P4, P5) of the multiple-substance mixture and systems are placed in ring crucibles (17) stacked at several levels. Vapors of the lower-boiling component are drawn off through a vapor exhaust opening in each crucible, while the top ring crucible (17) is closed except for its vapor exhaust opening.
    Type: Application
    Filed: October 30, 2001
    Publication date: April 25, 2002
    Inventors: Manfred Raschke, Wilfried Goy, Franz Hugo, Erwin Wanetzky, Albrecht Melber
  • Patent number: 6375893
    Abstract: For the evaporation of given components from initial multiple-substance mixtures and systems at subatmospheric pressure, individual portions (P1, P2, P3, P4, P5) of the multiple-substance mixture and systems are placed in ring crucibles (17) stacked at several levels. Vapors of the lower-boiling component are drawn off through a vapor exhaust opening in each crucible, while the top ring crucible (17) is closed except for its vapor exhaust opening.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: April 23, 2002
    Inventors: Manfred Raschke, Wilfried Goy, Franz Hugo, Erwin Wanetzky, Albrecht Melber
  • Patent number: 6109992
    Abstract: Apparatus and method for removing metal bases from glass bulbs such as fluorescent lamps for the salvaging of raw materials therein for reuse. The method comprises providing an inductive field coil about at least one end of the glass bulb having the metal base, heating the metal base by induction to expand and loosen the same, then gripping and pulling the metal base from the bulb. The bulb is kept intact for later salvaging operations such that the removed bases are uncontaminated by mercury. The apparatus can include non-magnetic grippers such as ceramic jaws for the gripping of the metallic bases.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: August 29, 2000
    Assignees: ALD Vacuum Technologies AG, Paul Frankenbach
    Inventors: Albrecht Melber, Erwin Wanetzky, Paul Frankenbach
  • Patent number: 5762717
    Abstract: In a process for cleaning oil-wetted structural parts, a vacuum furnace (1) is first evacuated to a defined first pressure to eliminate residual air. Then an inert gas is introduced until a second, subatmospheric pressure is reached, which is above the first pressure, and the inert gas is circulated inside the vacuum furnace. To reduce the heat-up times and to conserve energy and inert gas:(a) the second pressure is above the vapor pressure curve of the wetting oil and is reached by flooding the vacuum furnace (1);(b) the inert gas feed and the evacuation are interrupted after the flooding, and the inert gas and the oil vapors are circulated exclusively in the interior of the vacuum furnace (1); and(c) upon completion of the heat-up period, a connection is established from the vacuum furnace (1) to a condenser (11) and to a vacuum pump (12); the pressure is lowered to a value below the vapor pressure curve; and the oils thus evaporated are withdrawn and condensed.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: June 9, 1998
    Assignee: Ald Vacuum Technologies GmbH
    Inventors: Franz Hugo, Erwin Wanetzky, Albrecht Melber, Manfred Raschke
  • Patent number: 5595483
    Abstract: Materials containing vaporizable substances are exposed successively in at least two treatment chambers (10, 13, 14), which can be closed off with respect to each other, to a series of decreasing pressures and increasing temperatures. The vaporizable substances are exhausted separately from each treatment chamber (10, 13, 14) and at least partially condensed and collected. The solid materials are discharged from the last treatment chamber (14). The treatment chambers (10, 13, 14) can be closed off against each other, against the atmosphere, and against any other units which may be connected to them downline (17, 18) by vacuum valves (11, 12, 115, 16) and are connected to vacuum lines (10a, 13a, 14a) in which condensers (10b, 13b, 14b) and vacuum pumps (10c, 13c, 14c) are installed.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: January 21, 1997
    Assignee: Ald Vacuum Technologies GmbH
    Inventors: Albrecht Melber, Erwin Wanetzky, Dieter Uschkoreit
  • Patent number: 5558725
    Abstract: Workpieces of carburizable materials, especially steels, are carburized by means of a pulsed plasma discharge in a carbon-containing atmosphere at pressures of 0.1-30 mbars and at pulsed voltages of 200-2,000 V, preferably of 300-1,000 V. A continuously applied baseline voltage, which is below the breakdown voltage, is superimposed on the pulsed voltage. The baseline voltage is preferably a direct-current voltage, which is in the range of 10-150 V, preferably of 20-100 V.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: September 24, 1996
    Assignee: ALD Vacuum Technologies GmbH
    Inventors: Frank Schnatbaum, Albrecht Melber
  • Patent number: 5383980
    Abstract: Workpieces of steel are hardened by carburizing the surface and then quenching. The carburizing is performed by means of a plasma discharge in a vacuum, in the presence of gaseous hydrocarbons at voltages between 200 and 2000 volts, preferably between 300 and 1000 volts, and preferably with the admixture of argon. The plasma is produced by means of electrodes operated in a vacuum, the cathode of which serves as workpiece holder and is operated by pulsed operation. In order to achieve a uniform hardness distribution and to reduce the mass flow of carbon, even in the case of irregularly shaped workpieces, the carburization is performed at a total pressure between 14 and 30 mbar, the pulse duration is selected between 110 and 10,000 .mu.sec, and the pause duration is selected between 30 and 10,000 .mu.sec.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: January 24, 1995
    Assignee: Leybold Durferrit GmbH
    Inventors: Albrecht Melber, Kyong-Tschong Rie, Frank Schnatbaum
  • Patent number: 5372655
    Abstract: Method for the treatment of alloy steels and refractory metals such as Ti, Zr and Nb, especially for depassivation and subsequent thermochemical surface treatment in a process chamber (1, 2) under the action of pressure and temperature, wherein, in a first process step, a first gas or gas mixture from the group N.sub.2, H.sub.2 or NH.sub.3 is admitted for the depassivation into a process chamber (1), a pressure greater than 1 bar a and a temperature between 100.degree. C. and 1,000.degree. C. is established in the chamber (1), and in a second process step a second gas or gas mixture from the group of N-, C- or B-containing gases is admitted into a process chamber (1, 2) for the thermochemical surface treatment, and a temperature between 100.degree. C. and 1,000.degree. C. at a pressure greater than or equal to 1 bar a is established.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: December 13, 1994
    Assignee: Leybold Durferrit GmbH
    Inventors: Friedrich Preisser, Peter Minarski, Albrecht Melber, Klaus Zimmerman