Patents by Inventor Oliver Schaefer

Oliver Schaefer 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: 20140252926
    Abstract: The present invention relates to a medical device for extracorporeal blood treatment which is preferably configured as a mobile device. According to aspects of the present invention, the device includes a device housing which is configured as a self-supporting housing, preferably without any frame whatsoever.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: B. Braun Avitum AG
    Inventors: OLIVER SCHAEFER, KAI-UWE RITTER
  • Patent number: 8791830
    Abstract: The present invention relates to a device for current measuring in power supply networks comprising transformers for measuring current, a signal processing apparatus arranged on a printed circuit board and screw fastenings for mounting the device. The cable ducts of the transformers are orientated parallel to the plane of the printed circuit board, which has openings flush to the cable ducts, and the screw fastenings are fastening tabs with mounting holes, spaced so standards-compliant mounting is possible. In an alternate embodiment, the cable ducts are orientated perpendicularly to the plane of the printed circuit board, the screw fastenings are constructed as an angle rail with cable outlets and standards-compliant mounting holes, and the printed circuit board is internally fastened on one side of the angle rail. In another alternate embodiment the transformers are installed with the printed circuit board in a common housing with fastening tabs and standards-compliant mounting holes.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: July 29, 2014
    Assignee: Bender GmbH & Co. KG
    Inventors: Winfried Moell, Oliver Schaefer
  • Patent number: 8749246
    Abstract: The invention relates to a method and a device for determining a maximum leakage current in unearthed power supply networks with a plurality of conductors. The method comprises the steps of: feeding of a measurement signal UP with a measurement frequency fPuls into a conductor arrangement, setting the measurement frequency fPuls, measuring a line-to-line voltage UL-E for each conductor, determining a maximum occurring line-to-line voltage UL-Emax from the measured line-to-line voltages UL-E, determining a voltage UZe across a measurement resistance RM for calculating a leakage impedance ZE, calculating the leakage impedance ZE, and calculating a maximum leakage current THC. The device comprises a signal generator for feeding in the UP with the fPuls, a network coupling circuit between the signal generator and the conductor arrangement, a voltage measuring circuit for measuring the UL-E, and an impedance measuring circuit for determining the Ze by means of the determining of the UZe.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: June 10, 2014
    Assignee: Bender GmbH & Co. KG
    Inventor: Oliver Schaefer
  • Publication number: 20140012202
    Abstract: Tube roller pumps for a medical device for extracorporeal blood treatment are disclosed. The pumps include a pump housing having a bearing surface and a rotor inside the bearing surface, wherein a tube is introduced between the bearing surface and the rotor in loop shape. Means for mounting the tubing segment are provided so the tubing segment can be pivot by pivoting a tilting element on which the tubing segment is at least partly mounted. A cover is mounted on the pump housing so that when closed upon pivoting the tubing segment toward the closed cover it constitutes a counter-bearing for the tilting element by which the tubing segment can be aligned with the pump housing. Means for automated unthreading of the tubing segment from the bearing are also included. Medical devices for extracorporeal blood treatment including the tube roller pump are also disclosed.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 9, 2014
    Inventor: Oliver Schaefer
  • Publication number: 20140010690
    Abstract: Tube roller pumps for a medical device for extracorporeal blood treatment are disclosed. The pumps include a pump housing having a bent bearing surface and a rotor being rotatable inside the bearing surface, wherein a tubing segment can be introduced between the bearing surface and the rotor in the form of a loop. At the pump housing a stationary first receiving portion for accommodating one end of the loop-shaped tubing segment and a rocker arm including a second receiving portion for accommodating the other end of the loop-shaped tubing segment are provided, wherein the rocker arm is rotatable about a pivoting axis so that the second receiving portion with the tubing segment can be brought into at least two different positions and that a first position represents a threading position and a second position represents an unthreading position for the tubing segment. Medical devices for extracorporeal blood treatment including such tube roller pumps are also disclosed.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Inventors: Oliver Schaefer, Andreas Iske, Bjoern Broeker
  • Publication number: 20140012176
    Abstract: Multi-connectors are disclosed for arranging a tubing segment and feeding/discharging lines of an extracorporeal blood circulation on a tube roller pump, the multi-connectors including a base and connectors for connecting the tubing segment to the feeding/discharging lines. A first connector includes a convex contour. The multi-connectors may be arranged on a medical device pump housing having a bearing surface and a rotor within the bearing surface, wherein a tube can be introduced between the bearing surface and the rotor and blood can be fed/discharged via feeding/discharging lines. A concave receiving portion is provided for the first connector, forming a pivot bearing to pivot the multi-connector. Pump housing means for locking adapted to interact with multi-connector means for locking are provided so the multi-connector can be detachably fastened.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 9, 2014
    Inventors: Oliver Schaefer, Dirk Moeller, Bruno Stenzel
  • Publication number: 20140012201
    Abstract: Tube roller pumps for blood treatment devices are disclosed. The pumps include a curved surface with a rotor rotatable therein. The rotor attaches via a reception means to a drive shaft of the pump. The rotor has a first locking element for axially locking the rotor on the shaft and a second locking element for rotationally coupling the shaft and the rotor. The reception means and the drive shaft guide the rotor to a position on the shaft, when pushed onto the shaft, and, at this position, the first element may be moved by the shaft from locked to released. The rotor, when pushed further onto the shaft, is moved to another position at which the first element is automatically moved back to locked and the second element may be brought into manual engagement with the shaft to transmit torque from the shaft to the rotor.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Inventor: OLIVER SCHAEFER
  • Publication number: 20140003985
    Abstract: A lid apparatus for a medical device for extracorporeal blood treatment that includes a lid which is hinged by means of at least one pivot joint at the medical device is disclosed. The pivot joint includes thereby a first joint section which may be positioned at the lid, and a second joint section which may be connectable to the medical device, wherein the joint sections are pivotable about a pivot axis at least between a first position, in which the lid is open, and a second position, in which the lid covers at least a part of the medical device, wherein also the joint sections are latchable in at least one pivoting position.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 2, 2014
    Inventor: Oliver Schaefer
  • Patent number: 8507618
    Abstract: Composition comprising (A) 50-99.5 wt %, based on the total weight, of A, B and C of a reaction resin or reaction resin mixture that is processed into thermosetting materials, said resin or resin mixture being liquid at temperatures in the range of 15 to 100° C. and having an average molecular weight of 200 to 500,000 and with a sufficient number of suitable reactive groups for a curing process and (B) 0.5-50 wt %, relative to the total weight of A, B and C of one or more dispersed polyorganosiloxanes that are contained in the reaction resin or reaction resin mixture homogeneously in finely distributed form as polyorganosiloxane droplets with a diameter of 0.001 to 4 ?m, wherein the organopolysiloxane particle is a polymer of the general formula (R3SiO1/2)W(R2SiO2/2)X—(RSiO3/2)Y—(SiO4/2)Z, where w=0 to 20 Mol %, x=80 to 99.9 Mol %, y=0.5 to 10 Mol %, z=0 to 10 Mol %, (C) 0.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: August 13, 2013
    Assignee: Wacker Chemie AG
    Inventors: Oliver Schäfer, Helmut Oswaldbauer
  • Patent number: 8343629
    Abstract: Composites of a fluoropolymer and an organopolysiloxane/polyurethane/polyurea adhesive exhibit strong adhesion while also offering desirable handling properties.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: January 1, 2013
    Assignee: Wacker Chemie AG
    Inventors: Oliver Schaefer, Peter Randel
  • Publication number: 20120249336
    Abstract: The present invention relates to a device for current measuring in power supply networks comprising transformers for measuring current, a signal processing apparatus arranged on a printed circuit board and screw fastenings for mounting the device. The cable ducts of the transformers are orientated parallel to the plane of the printed circuit board, which has openings flush to the cable ducts, and the screw fastenings are fastening tabs with mounting holes, spaced so standards-compliant mounting is possible. In an alternate embodiment, the cable ducts are orientated perpendicularly to the plane of the printed circuit board, the screw fastenings are constructed as an angle rail with cable outlets and standards-compliant mounting holes, and the printed circuit board is internally fastened on one side of the angle rail. In another alternate embodiment the transformers are installed with the printed circuit board in a common housing with fastening tabs and standards-compliant mounting holes.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 4, 2012
    Applicant: BENDER GMBH & CO. KG
    Inventors: Winfried Moell, Oliver Schaefer
  • Publication number: 20120206148
    Abstract: The invention relates to a method and a device for determining a maximum leakage current in unearthed power supply networks with a plurality of conductors. The method comprises the steps of: feeding of a measurement signal UP with a measurement frequency fPuls into a conductor arrangement, setting the measurement frequency fPuls, measuring a line-to-line voltage UL-E for each conductor, determining a maximum occurring line-to-line voltage UL-Emax from the measured line-to-line voltages UL-E, determining a voltage UZe across a measurement resistance RM for calculating a leakage impedance ZE, calculating the leakage impedance ZE, and calculating a maximum leakage current THC. The device comprises a signal generator for feeding in the UP with the fPuls, a network coupling circuit between the signal generator and the conductor arrangement, a voltage measuring circuit for measuring the UL-E, and an impedance measuring circuit for determining the Ze by means of the determining of the UZe.
    Type: Application
    Filed: February 16, 2011
    Publication date: August 16, 2012
    Applicant: DIPL.-ING. W. BENDER GMBH & CO. KG
    Inventor: Oliver Schaefer
  • Publication number: 20120126839
    Abstract: The invention relates to a method and a device for monitoring the insulation of an ungrounded DC and/or AC voltage network. The method comprises the following steps: (a) generating a measurement DC voltage Umess= that is connected to a ground on one side for a predeterminable measuring time frame tvar; (b) generating and superposing at least one measurement AC voltage Umess˜ connected to a ground and having a measurement duration tcons with the measurement DC voltage Umess? for forming a total measurement voltage Umess; (c) feeding the total measurement voltage Umess into the voltage network to be monitored; and (d) determining an insulating resistance R= from the measurement DC voltage Umess? and an insulating impedance Z from the measurement AC voltage Umess˜. The devise is configured to carry out the above method. The method and the device are suited in particular for monitoring the insulation in electric and hybrid vehicles.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 24, 2012
    Applicant: DIPL.-ING WALTHER BENDER GMBH & CO. KG
    Inventors: Oliver Schaefer, Karl Schepp
  • Patent number: 8076002
    Abstract: Photovoltaic modules are prepared by laminating an active device to a glass cover plate by means of a thermoplastic siloxane copolymer. The siloxane copolymer provides good adhesion, freedom from water absorption, and yet can be reworked either in the field or during recycling of the solar cell components.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: December 13, 2011
    Assignee: Wacker Chemie AG
    Inventors: Christian Ochs, Ralph Hiemeyer, Oliver Schaefer
  • Publication number: 20110237761
    Abstract: Composition comprising (A) 50-99.5 wt %, based on the total weight, of A, B and C of a reaction resin or reaction resin mixture that is processed into thermosetting materials, said resin or resin mixture being liquid at temperatures in the range of 15 to 100° C. and having an average molecular weight of 200 to 500,000 and with a sufficient number of suitable reactive groups for a curing process and (B) 0.5-50 wt %, relative to the total weight of A, B and C of one or more dispersed polyorganosiloxanes that are contained in the reaction resin or reaction resin mixture homogeneously in finely distributed form as polyorganosiloxane droplets with a diameter of 0.001 to 4 ?m, wherein the organopolysiloxane particle is a polymer of the general formula (R3SiO1/2)w(R2SiO2/2)x- (RSiO3/2)y- (SiO4/2)z, where w=0 to 20 Mol %, x=80 to 99.9 Mol %, y=0.5 to 10 Mol %, z=0 to 10 Mol %, (C) 0.
    Type: Application
    Filed: November 20, 2009
    Publication date: September 29, 2011
    Applicant: Wacker Chemie AG
    Inventors: Oliver Schäfer, Helmut Oswaldbauer
  • Patent number: 7956210
    Abstract: Alkyl silanes are prepared by silylating an unsaturated hydrocarbon with an Si—H functional silane employing an iridium chloride coordination compound as a catalyst and a polymeric polyene as a cocatalyst. Reaction bottoms can be worked up to provide an iridium-containing composition which remains catalytically active.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: June 7, 2011
    Assignee: Wacker Chemie AG
    Inventors: Andreas Bauer, Oliver Schäfer
  • Publication number: 20110076795
    Abstract: Organopolysiloxane/polyuria/polyurethane block copolymers containing a compatible UV stabilizer are transparent and resistant to degradation.
    Type: Application
    Filed: May 25, 2009
    Publication date: March 31, 2011
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Ernst Selbertinger
  • Publication number: 20110009572
    Abstract: Polymer blends containing organopolysiloxane-polymer-polyurethane copolymers and thermoplastic polymers bearing epoxy, carboxylic acid, carboxylic acid ester, or carboxylic acid anhydride groups exhibit enhanced physical properties.
    Type: Application
    Filed: February 20, 2009
    Publication date: January 13, 2011
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Mathias Scherer
  • Publication number: 20100305273
    Abstract: Thermoset polymer systems are toughened without compromising other polymer properties by including 0.5 to 50 weight percent of 0.001 to 0.4 ?m monodisperse core/shell polymers having at least an inner core of a silicone polymer and an outer core of organopolymer.
    Type: Application
    Filed: May 19, 2008
    Publication date: December 2, 2010
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Helmut Oswaldbauer
  • Publication number: 20100233489
    Abstract: Composites of a fluoropolymer and an organopolysiloxane/polyurethane/polyurea adhesive exhibit strong adhesion while also offering desirable handling properties.
    Type: Application
    Filed: October 16, 2008
    Publication date: September 16, 2010
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Peter Randel