Patents by Inventor Rolf Walter
Rolf Walter 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).
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Patent number: 11596904Abstract: The present invention provides a composite body having, on a porous substrate and in the interstices of the substrate that includes fibers, preferably of an electrically nonconductive material, a porous layer (1) composed of oxide particles bonded to one another and partly to the substrate that include at least one oxide selected from oxides of the elements Al, Zr, Ti and Si, preferably selected from Al2O3, ZrO2, TiO2 and SiO2, and having, at least on one side, a further porous layer (2) including oxide particles bonded to one another and partly to layer (1) that include at least one oxide selected from oxides of the elements Al, Zr, Ti and Si, preferably selected from Al2O3, ZrO2, TiO2 and SiO2, where the oxide particles present in layer (1) have a greater median particle size than the oxide particles present in layer (2), which is characterized in that the median particle size (d50) of the oxide particles in layer (1) is from 0.Type: GrantFiled: December 4, 2019Date of Patent: March 7, 2023Assignee: Evonik Operations GmbHInventors: Christian Hying, David Grzenia, Rolf-Walter Terwonne, Bastian Matthias Brugger, Kira Khaletskaya, Oliver Conradi, Hans-Jürgen Nettelnbreker, Alexander Paasche
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Patent number: 11303048Abstract: A plug connector for electrically connecting a tag connector to an electrical line of a motor-driven garden and/or forestry working apparatus includes a tag connector receptacle portion and a line receptacle portion. The tag connector receptacle portion has a first surface-clamping leg, a second surface-clamping leg, a first peripheral guiding blade and a second peripheral guiding blade, wherein the surface-clamping legs are disposed so as to be opposite one another and wherein the peripheral guiding blades are disposed so as to be opposite one another.Type: GrantFiled: December 1, 2020Date of Patent: April 12, 2022Assignee: Andreas Stihl AG & Co. KGInventors: Georg Maier, Michael Schneider, Mario Haefele, Rolf Walter
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Publication number: 20210167525Abstract: A plug connector for electrically connecting a tag connector to an electrical line of a motor-driven garden and/or forestry working apparatus includes a tag connector receptacle portion and a line receptacle portion. The tag connector receptacle portion has a first surface-clamping leg, a second surface-clamping leg, a first peripheral guiding blade and a second peripheral guiding blade, wherein the surface-clamping legs are disposed so as to be opposite one another and wherein the peripheral guiding blades are disposed so as to be opposite one another.Type: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Inventors: Georg MAIER, Michael SCHNEIDER, Mario HAEFELE, Rolf WALTER
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Patent number: 10858885Abstract: A shaft assembly for a protective or closing device comprises a hollow-shaped hollow section body and a drive unit. The shaft assembly is arranged to be mounted between a first support bearing and a second support bearing. The hollow section body is rotatable about longitudinal axis thereof and arranged to accommodate a curtain or a panel. The drive unit is at least partially accommodated in the hollow section body. The drive unit comprises an output for rotatably driving the hollow section body. The hollow section body comprises a first end and a second end and extends between the first support bearing and the second support bearing. At least at the first end or at the second end of the hollow section body, a connecting sleeve is provided. A biasing element is arranged between the hollow section body and the connecting sleeve. The connecting sleeve is axially displaceable relative to the hollow section body against a force applied by the biasing element.Type: GrantFiled: April 4, 2018Date of Patent: December 8, 2020Assignee: acomax GmbHInventor: Rolf Walter-Seifart
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Publication number: 20200197877Abstract: The present invention provides a composite body having, on a porous substrate and in the interstices of the substrate that includes fibers, preferably of an electrically nonconductive material, a porous layer (1) composed of oxide particles bonded to one another and partly to the substrate that include at least one oxide selected from oxides of the elements Al, Zr, Ti and Si, preferably selected from Al2O3, ZrO2, TiO2 and SiO2, and having, at least on one side, a further porous layer (2) including oxide particles bonded to one another and partly to layer (1) that include at least one oxide selected from oxides of the elements Al, Zr, Ti and Si, preferably selected from Al2O3, ZrO2, TiO2 and SiO2, where the oxide particles present in layer (1) have a greater median particle size than the oxide particles present in layer (2), which is characterized in that the median particle size (d50) of the oxide particles in layer (1) is from 0.Type: ApplicationFiled: December 4, 2019Publication date: June 25, 2020Applicant: Evonik Operations GmbHInventors: Christian Hying, David Grzenia, Rolf-Walter Terwonne, Bastian Matthias Brugger, Kira Khaletskaya, Oliver Conradi, Hans-Jürgen Nettelnbreker, Alexander Paasche
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Publication number: 20180291682Abstract: A shaft assembly for a protective or closing device comprises a hollow-shaped hollow section body and a drive unit. The shaft assembly is arranged to be mounted between a first support bearing and a second support bearing. The hollow section body is rotatable about longitudinal axis thereof and arranged to accommodate a curtain or a panel. The drive unit is at least partially accommodated in the hollow section body. The drive unit comprises an output for rotatably driving the hollow section body. The hollow section body comprises a first end and a second end and extends between the first support bearing and the second support bearing. At least at the first end or at the second end of the hollow section body, a connecting sleeve is provided. A biasing element is arranged between the hollow section body and the connecting sleeve. The connecting sleeve is axially displaceable relative to the hollow section body against a force applied by the biasing element.Type: ApplicationFiled: April 4, 2018Publication date: October 11, 2018Inventor: Rolf WALTER-SEIFART
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Patent number: 9782728Abstract: The present invention relates to a membrane comprising a flat, flexible substrate having a plurality of openings and having a porous inorganic coating situated on and in said substrate, the material of the substrate being selected from woven or non-woven, electrically non-conductive fibers, characterized in that the substrate comprises polyaramide fibers that are pure or connected to fibers of the further polymer or at least of one of these further polymers, wherein the fibers of at least one of said further polymers comprise a melting point that is lower than the decomposition point of the polyaramide fibers.Type: GrantFiled: June 30, 2010Date of Patent: October 10, 2017Assignee: Evonik Degussa GmbHInventors: Matthias Pascaly, Rolf-Walter Terwonne, Christian Hying
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Patent number: 9680141Abstract: The invention relates to a process for producing a separator comprising the steps of: providing a sheetlike porous substrate, a solvent, ceramic particles and an adhesion promoter; preparing a slip by mixing the solvent, the adhesion promoter and the ceramic particles; coating the substrate with the slip and thermally drying the coated substrate to obtain the separator. The problem addressed is that of specifying a process useful for producing separators having a higher ceramic content. The problem is solved when the solvent used is a mixture of water and at least one organic component; the adhesion promoter used is a mixture of silanes and at least one thermally crosslinkable acrylic polymer; the slip is admixed with a carboxylic acid preparation and also with a defoamer component free from silicone oil.Type: GrantFiled: January 29, 2013Date of Patent: June 13, 2017Assignee: Litarion GmbHInventors: Rolf-Walter Terwonne, Witold Friedemann Rex, Matthias Pascaly, Michael Kube, Christian Hying
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Publication number: 20150126663Abstract: A resin composition [composition (C)] comprising: from 40 to 95% by volume (% v) of at least one aromatic polyimide [polymer (PI)], from 0.1 to 15% by volume (% v) of at least one compound having the general formula AnXm [compound (AnXm)], wherein each A is independently selected from a group consisting of a metal atom (M) which is selected from the group consisting of Fe, Co, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Pt, Au, Hg, Pb and Tl and a semimetal atom (SM) which is selected from the group consisting of As, Sb and Bi; wherein each X is independently selected from a group consisting of As, Sb, S, Se and Te; with the proviso that when A is As or Sb then X is different from A; and wherein n and m equal or different from each other, are independently 1, 2, 3 and 4, from 0.Type: ApplicationFiled: May 16, 2013Publication date: May 7, 2015Applicant: SOLVAY SPECIALTY POLYMERS USA, LLC.Inventors: Thomas Burkhart, Rolf Walter, Hans-Peter Feldner, Yuhong Wu, Geoffrey Scott Underwood, Brian A. Stern
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Publication number: 20150017512Abstract: The invention relates to a process for producing a separator comprising the steps of: providing a sheetlike porous substrate, a solvent, ceramic particles and an adhesion promoter; preparing a slip by mixing the solvent, the adhesion promoter and the ceramic particles; coating the substrate with the slip and thermally drying the coated substrate to obtain the separator. The problem addressed is that of specifying a process useful for producing separators having a higher ceramic content. The problem is solved when the solvent used is a mixture of water and at least one organic component; the adhesion promoter used is a mixture of silanes and at least one thermally crosslinkable acrylic polymer; the slip is admixed with a carboxylic acid preparation and also with a defoamer component free from silicone oil.Type: ApplicationFiled: January 29, 2013Publication date: January 15, 2015Applicant: Evonik Litarion GmbHInventors: Rolf-Walter Terwonne, Witold Rex, Matthias Pascaly, Michael Kube, Christian Hying
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Patent number: 8833322Abstract: A portable work apparatus has a combustion engine for driving a work tool. An air/fuel mixture is supplied to the engine via a carburetor which is provided with an electrical heating element for heating to a given temperature. The heating element is connected to a switch via which electrical energy, which is provided by a generator driven by the engine, is supplied. When a given temperature is exceeded, the switch interrupts the energy supply. To achieve an exact temperature control, the ohmic resistance value of the heating element is stored in a memory in dependence on the temperature. The current flowing through the heating element and the voltage drop at the heating element are measured and the instantaneous resistance of the heating element is calculated therefrom. This calculated value is compared to the value stored in the memory to open or close the switch in dependence on the comparison.Type: GrantFiled: November 17, 2011Date of Patent: September 16, 2014Assignee: Andreas Stihl AG & Co. KGInventors: Heinrich Leufen, Jörg Präger, David Fallscheer, Rolf Walter, Michael Link
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Publication number: 20140127546Abstract: The invention relates to a separator which has a porous coating which is not electrically conductive and is composed of oxide particles which are adhesively bonded to one another and to the substrate by means of an inorganic adhesive and comprise at least one oxide selected from among Al2O3 and SiO2 on a substrate and in the interstices of the substrate which has fibres composed of a material which is not electrically conductive, characterized in that at least one sugar is present in the ceramic coating.Type: ApplicationFiled: February 27, 2012Publication date: May 8, 2014Applicant: EVONIK LITARION GmbHInventors: Matthias Pascaly, Rolf-Walter Terwonne, Christian Hying, Henrik Hahn
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Publication number: 20120276456Abstract: Electrolyte, comprising an aprotic solvent, a lithium salt as conducting salt, and an additive, characterized in that the additive is a compound which contains a protonable nitrogen atom and is hydrolysable by water.Type: ApplicationFiled: August 27, 2010Publication date: November 1, 2012Applicant: LI-TEC BATTERY GMBHInventors: Peter Pilgram, Rolf-Walter Terwonne, Denny Thiemig, Joerg Kaiser, Andreas Gutsch
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Publication number: 20120251890Abstract: The present invention relates to a membrane comprising a flat, flexible substrate having a plurality of openings and having a porous inorganic coating situated on and in said substrate, the material of the substrate being selected from woven or non-woven, electrically non-conductive fibers, characterized in that the substrate comprises polyaramide fibers that are pure or connected to fibers of the further polymer or at least of one of these further polymers, wherein the fibers of at least one of said further polymers comprise a melting point that is lower than the decomposition point of the polyaramide fibers.Type: ApplicationFiled: June 30, 2010Publication date: October 4, 2012Applicant: EVONIK DEGUSSA GmbHInventors: Matthias Pascaly, Rolf-Walter Terwonne, Martin Schuster, Christian Hying
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Publication number: 20120118254Abstract: A portable work apparatus has a combustion engine for driving a work tool. An air/fuel mixture is supplied to the engine via a carburetor which is provided with an electrical heating element for heating to a given temperature. The heating element is connected to a switch via which electrical energy, which is provided by a generator driven by the engine, is supplied. When a given temperature is exceeded, the switch interrupts the energy supply. To achieve an exact temperature control, the ohmic resistance value of the heating element is stored in a memory in dependence on the temperature. The current flowing through the heating element and the voltage drop at the heating element are measured and the instantaneous resistance of the heating element is calculated therefrom. This calculated value is compared to the value stored in the memory to open or close the switch in dependence on the comparison.Type: ApplicationFiled: November 17, 2011Publication date: May 17, 2012Inventors: Heinrich Leufen, Jörg Präger, David Fallscheer, Rolf Walter, Michael Link
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Patent number: 8177586Abstract: A connector system (1) includes a plurality of connectors (39 to 45) which each have a plug and a counter plug. Each plug has a plurality of receptacles (29, 30) for contacts and each counter plug has a plurality of receptacles (29, 30) for counter contacts. In at least one receptacle (29, 30) of each plug, a contact is arranged and in at least one allocated receptacle (29, 30) of each counter plug, an allocated counter contact is arranged. In at least one of the connectors (39 to 45), at least one receptacle of a plug does not have a contact. In the allocated receptacle (29, 30) of the counter plug, a coding element is arranged which prevents the insertion of a contact into this receptacle (29, 30) of the counter plug.Type: GrantFiled: July 2, 2010Date of Patent: May 15, 2012Assignee: Andreas Stihl AG & Co. KGInventors: Heiko Däschner, Rolf Walter, Michael Schneider
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Patent number: 8009085Abstract: A level verification system for a radar level gauge utilizes a remotely positionable target. The target is positioned inside of a tank that is subject to level measurement, and stowed at a first position and selectively positionable to a second position to reflect emitted electromagnetic radiation in an amount indicative of a predetermined material level. The verification system can verify a high level alarm will be triggered when the material reaches a high level corresponding to the level of the target, by remotely positioning the target in front of the emitter of the radar gauge. The target reflects electromagnetic energy to the detector at approximately the same intensity that the material reaching the high level would reflect so as to provide an accurate verification.Type: GrantFiled: February 17, 2009Date of Patent: August 30, 2011Assignee: GK Tech Star LLCInventors: Kyle Rolf Walter Kuhlow, Craig Lee Longcor
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Publication number: 20110003516Abstract: A connector system (1) includes a plurality of connectors (39 to 45) which each have a plug and a counter plug. Each plug has a plurality of receptacles (29, 30) for contacts and each counter plug has a plurality of receptacles (29, 30) for counter contacts. In at least one receptacle (29, 30) of each plug, a contact is arranged and in at least one allocated receptacle (29, 30) of each counter plug, an allocated counter contact is arranged. In at least one of the connectors (39 to 45), at least one receptacle of a plug does not have a contact. In the allocated receptacle (29, 30) of the counter plug, a coding element is arranged which prevents the insertion of a contact into this receptacle (29, 30) of the counter plug.Type: ApplicationFiled: July 2, 2010Publication date: January 6, 2011Inventors: Heiko Däschner, Rolf Walter, Michael Schneider
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Patent number: 7816796Abstract: A hand-held power tool has a drive motor driving a tool and a generator. One or more heating devices having one or more heating elements are provided. The generator supplies the one or more heating devices with energy. A control device controls a power supplied to the one or more heating elements as a function of at least one operating parameter of the drive motor.Type: GrantFiled: August 9, 2007Date of Patent: October 19, 2010Assignee: Andreas Stihl AG & Co. KGInventors: Heinrich Leufen, Rolf Walter, Fried Berkenkamp
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Publication number: 20100224466Abstract: A portable handheld work apparatus has an internal combustion engine (7) which includes an ignition system. An operating-mode position selector (55) is provided which closes a first switch (76) in a first position and closes a second switch (77) in a second position. The first switch (76) includes a first contact (39) and the second switch (77) includes a second contact (40). A simple and robust configuration is provided when the first contact (39) and the second contact (40) are formed on the operating-mode position selector (55).Type: ApplicationFiled: March 3, 2010Publication date: September 9, 2010Inventors: Klaus Leinmüller, Lukas Zürcher, Rolf Walter