Patents by Inventor Lothar Schaefer
Lothar 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).
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Publication number: 20180136369Abstract: A coated object and a method for producing a coated object are disclosed. In an embodiment, the coated object includes a substrate and an optical coating disposed on the substrate, wherein the optical coating includes a reflection-reducing layer sequence, which includes a covering layer with a refractive index nA and at least one diamond layer with a refractive index nD1>nA, wherein the diamond layer is disposed between the covering layer and the substrate and includes diamond crystals, and wherein the diamond layer has a layer thickness of less than 500 nm.Type: ApplicationFiled: April 13, 2016Publication date: May 17, 2018Inventors: Michael Vergöhl, Stefan Bruns, Hans-Ulrich Kricheldorf, Lothar Schäfer, Markus Höfer, Markus Armgardt
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Patent number: 9010762Abstract: The present invention refers to a seal ring for a mechanical seal, comprising: a base body (2) with a diamond layer (3) which is applied to the base body (2) and configured as a sliding surface, wherein the diamond layer (3) has a thickness (D) which is less than or equal to 4 ?m, particularly less than or equal to 3 ?m, particularly less than or equal to 2 ?m, particularly preferably about 1 ?m, and wherein the base body (2) is without fissures or only comprises fissures that have a maximum longitudinal extension (L) on a surface of the base body (2) or in the base body (2) that is less than or equal to 5 ?m.Type: GrantFiled: October 4, 2011Date of Patent: April 21, 2015Assignee: EagleBurgmann Germany GmbH & Co. KGInventors: Joachim Otschik, Andreas Schrüfer, Dieter Ziegenbein, Rudolf Kollinger, Lothar Schäfer, Markus Höfer, Markus Armgardt
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Patent number: 8986452Abstract: A coating installation containing at least one recipient which can be evacuated and which is adapted to accommodate a substrate, at least one gas supply device which is used to introduce at least one gaseous precursor into the recipient and at least one heatable activation element which has a definable longitudinal extension and which is fastened by means of at least one associated mechanical fastening device to be virtually immobile relative to the recipient. In a corresponding method, an electric current can be supplied to the activation element via at least two contact elements and at least one of the contact elements is designed to contact the activation element in alternating contact points.Type: GrantFiled: May 13, 2010Date of Patent: March 24, 2015Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Tino Harig, Markus Höfer, Artur Laukart, Lothar Schäfer, Markus Armgardt
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Patent number: 8940367Abstract: A coating installation includes at least one recipient which can be evacuated and which is provided to receive a substrate, at least one gas supply device which can introduce at least one gaseous precursor into the recipient, and at least one activation device which contains at least one heatable activation element, the end thereof being secured to a securing point on a support element. A shielding element which can protect at least the securing point at least partially against the effect of the gaseous precursor is provided. The shielding element has a longitudinal extension having a first side and a second side, the first side being arranged on the support element and a locking element being arranged on the second side of the shielding element, the locking element having at least one outlet. At least one separation wall is arranged inside the shielding element, the wall separating the inner volume of the shielding element into a first partial volume and into a second partial volume.Type: GrantFiled: May 13, 2010Date of Patent: January 27, 2015Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Tino Harig, Markus Höfer, Artur Laukart, Lothar Schäfer, Markus Armgardt
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Publication number: 20130313785Abstract: The present invention refers to a seal ring for a mechanical seal, comprising: a base body (2) with a diamond layer (3) which is applied to the base body (2) and configured as a sliding surface, wherein the diamond layer (3) has a thickness (D) which is less than or equal to 4 ?m, particularly less than or equal to 3 ?m, particularly less than or equal to 2 ?m, particularly preferably about 1 ?m, and wherein the base body (2) is without fissures or only comprises fissures that have a maximum longitudinal extension (L) on a surface of the base body (2) or in the base body (2) that is less than or equal to 5 ?m.Type: ApplicationFiled: October 4, 2011Publication date: November 28, 2013Applicant: EAGLEBURGMANN GERMANY GMBH & CO. KGInventors: Joachim Otschik, Andreas Schrüfer, Dieter Ziegenbein, Rudolf Kollinger, Lothar Schäfer, Markus Höfer, Markus Armgardt
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Publication number: 20130168928Abstract: The present invention refers to a seal ring comprising: a base region (20), a diamond coating (21) applied to the base region (20), and a lubricant coating (22) applied to the diamond coating (21), which adheres to the diamond coating and fills recesses (23) of the diamond coating (21). Furthermore, the present invention refers to a mechanical seal comprising at least one seal ring according to the invention.Type: ApplicationFiled: March 22, 2011Publication date: July 4, 2013Applicant: EagleBurgmann Germany GmbH & Co. KGInventors: Andreas Schrüfer, Jörg Thelke, Michael Riedl, Lothar Schäfer, Markus Armgardt, Markus Höfer
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Patent number: 8453532Abstract: The invention relates to a method for setting the tooth face position of a gear wheel (2), which is non-positively connected to a double-skewed pinion shaft (1). A hydraulic press fit (4, 4a) is formed between the gear wheel (2) and pinion shaft (1) for relieving a non-positive connection of the gear wheel (2) shrink-fitted onto the pinion shaft (1). The setting is carried out by determining a tooth face apex point (A) of the double-skew of the pinion shaft (1). A radial plane (E) with a predetermined axial offset (AV) from the tooth face apex point (A) and a radial offset (RV) with respect to the tooth face apex point (A) are defined. The intersecting point (S) of a tooth face (11) of the gear wheel (2) must be located with the predetermined radial offset (RV) in the radial plane (E).Type: GrantFiled: December 18, 2008Date of Patent: June 4, 2013Assignee: Jahnel-Kestermann Getriebewerke GmbH & Co. KGInventors: Lothar Schäfer, Horst Wawro
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Publication number: 20120135144Abstract: A coating installation includes at least one recipient which can be evacuated and which is provided to receive a substrate, at least one gas supply device which can introduce at least one gaseous precursor into the recipient, and at least one activation device which contains at least one heatable activation element, the end thereof being secured to a securing point on a support element. A shielding element which can protect at least the securing point at least partially against the effect of the gaseous precursor is provided. The shielding element has a longitudinal extension having a first side and a second side, the first side being arranged on the support element and a locking element being arranged on the second side of the shielding element, the locking element having at least one outlet. At least one separation wall is arranged inside the shielding element, the wall separating the inner volume of the shielding element into a first partial volume and into a second partial volume.Type: ApplicationFiled: May 13, 2010Publication date: May 31, 2012Inventors: Tino Harig, Markus Höfer, Artur Laukart, Lothar Schäfer, Markus Armgardt
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Publication number: 20120114855Abstract: A coating method can use a coating device containing at least one recipient which can be evacuated and which is adapted to accommodate a substrate, at least one gas supply device which is used to introduce at least one gaseous precursor into the recipient and at least one heatable activation element which has a definable longitudinal extension and which is fastened by means of at least one associated mechanical fastening device. Electric current can be supplied to the activation element via at least two contact elements and the contact elements are fastened so as to be virtually immobile relative to the recipient. The activation element is arranged so as to be mobile relative to the recipient.Type: ApplicationFiled: May 17, 2010Publication date: May 10, 2012Inventors: Tino Harig, Markus Höfer, Artur Laukart, Lothar Schäfer, Markus Armgardt
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Publication number: 20120107501Abstract: A coating installation containing at least one recipient which can be evacuated and which is provided to receive a substrate, at least one gas supply device which can introduce at least one gaseous precursor into the recipient, and at least one activation device which contains at least one heatable activation element, the end thereof being secured to a securing point on a support element. In the related method, the activation element can be heated by at least one first heating device and at least one second heating device, the first heating device enabling energy to be input in a uniform manner over the longitudinal extension of the activation element and the second heating device enabling energy to be input in a changeable manner over the longitudinal extension of the activation element such that the temperature of the activation element, in at least one longitudinal section, can be brought to over 1300° C. due to the effect of the second heating element.Type: ApplicationFiled: May 13, 2010Publication date: May 3, 2012Inventors: Tino Harig, Markus Höfer, Artur Laukart, Lothar Schäfer, Markus Armgardt
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Publication number: 20110318490Abstract: A coating apparatus and method for depositing a coating that contains at least one first element on a substrate by an activated vapor deposition, wherein the substrate is introduced into a gas atmosphere that contains at least the first element, and the gas atmosphere is activated by a heated activation element, wherein the first element is selected from among silicon, germanium, carbon, boron, or nitrogen, and the material of the activation element contains at least one metal and at least one second element, wherein the second element is selected from among silicon, boron, germanium, carbon, and/or nitrogen and is different from the first element.Type: ApplicationFiled: March 1, 2010Publication date: December 29, 2011Applicant: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Lothar Schäfer, Markus Höfer, Tino Harig, Artur Laukart
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Publication number: 20110017004Abstract: The invention relates to a method for setting the tooth face position of a gear wheel (2), which is non-positively connected to a double-skewed pinion shaft (1). A hydraulic press fit (4, 4a) is formed between the gear wheel (2) and pinion shaft (1) for relieving a non-positive connection of the gear wheel (2) shrink-fitted onto the pinion shaft (1). The setting is carried out by determining a tooth face apex point (A) of the double-skew of the pinion shaft (1). A radial plane (E) with a predetermined axial offset (AV) from the tooth face apex point (A) and a radial offset (RV) with respect to the tooth face apex point (A) are defined. The intersecting point (S) of a tooth face (11) of the gear wheel (2) must be located with the predetermined radial offset (RV) in the radial plane (E).Type: ApplicationFiled: December 18, 2008Publication date: January 27, 2011Applicant: JAHNEL-KESTERMANN GETRIEBEWERKE GMBH & CO. KGInventors: Lothar Schäefer, Horst Wawro
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Patent number: 6794014Abstract: A gemstone is provided and has a large surface-area, plate-shaped support having a surface with least one pyramid-shaped depression. A thin vapor phase deposit layer comprises a thin, surface-shaped precious synthetic gemstone layer disposed on the large surface-area, plate-shaped support and has an upper surface facing away from the plate-shaped support and an underside having at least one pyramid-shaped projection disposed in and coinciding with the pyramid-shaped depression of the support. Side faces of the pyramid-shaped projections of the underside of the vapor phase deposit layer upon the plate-shaped support impart decorative, diamond-light-reflective qualities to the synthetic gemstone layer.Type: GrantFiled: July 29, 1999Date of Patent: September 21, 2004Assignee: Winter CVD Tecknik GmbHInventors: Ernst Michael Winter, Lothar Schäfer, Thorsten Matthee
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Patent number: 6558380Abstract: An instrument for surgical purposes, especially for coagulation, is proposed. This instrument has at least one arm, the tips of the arms having electrical contact regions which can be electrically connected to a control unit for touching a tissue for the purpose of coagulation. The contact regions are formed from doped diamond to produce the electrical conductivity.Type: GrantFiled: December 8, 2000Date of Patent: May 6, 2003Assignee: GFD Gesellschaft fur Diamantprodukte mbHInventors: Christian Lingenfelder, Stephan Ertl, Stefan Strobel, Rudolf Rösch, Siegfried Förster, Matthias Fryda, Lothar Schäfer, Inga Tröster, Dennie Herrmann
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Patent number: 6533916Abstract: An electrode consisting of a substrate and a diamond layer applied to the substrate, in which the applied diamond layer is pore-free, and a process for producing a diamond-coated electrode, in which the process comprises at least the following steps: a) cleaning the surface of the substrate; b) seeding the surface of the substrate with a high diamond nucleation density; c) coating the surface of the substrate with diamond.Type: GrantFiled: March 13, 2000Date of Patent: March 18, 2003Assignees: BASF Aktiengesellschaft, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Hermann Puetter, Andreas Weiper-Idelmann, Claudia Merk, Matthias Fryda, Claus-Peter Klages, Lothar Schaefer, Alexander Hampel
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Patent number: 6487986Abstract: In an apparatus for depositing polycrystalline diamond by plasma technology onto substrates (5) of large area, having a process chamber (1) with airlock (6a), a plurality of microwave plasma sources (9, 9′, . . . ) arranged in a common plane above the substrates (5) and extending transversely across the direction of substrate advancement, and gas inlet and gas outlet tubes (10, 10′, . . . , 11, 11′, . . . , 12, 12′, . . . , 13, 13′, . . . , 13a, . . . ) leading into the process chamber (1) are provided, a plurality of gas inlet and gas outlet tubes distributed over the length of the source are associated with each of the linear sources (9, 9′, . . . ), and the outlet openings of the gas inlet tubes being situated each directly above the linear source (9, 9′, . . . ), and the openings of the gas outlet tubes (13, 13′, . . . ) each in the area between two linear sources (9, 9′, . . .Type: GrantFiled: December 13, 2000Date of Patent: December 3, 2002Assignees: Unaxis Deutschland Holding GmbH, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Michael Liehr, Lothar Schäfer
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Patent number: 5318282Abstract: In a vibration damper, a load-attachment unit carried by a spring member has an axially supported fixing screw with a threaded section pointing upwards, the head of the fixing screw being accessible by way of openings in a fastening part supporting the fixing screw, the spring member and a base plate from the underside of the vibration damper, so that the vibration damper may be located on those machine parts in which there is no possibility of access to the support point from above.Type: GrantFiled: June 8, 1992Date of Patent: June 7, 1994Assignee: Stop-Choc Schwingungstechnik GmbH & Co.Inventor: Lothar Schaefer
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Patent number: 5289853Abstract: For producing an all-metal spring cushion, a knitted piece knitted from spring wire is wound in a winding sleeve (14). In the winding sleeve (14), the end of the knitted piece is fixed to the knitted roll (76) by micro-welding. In a pressing station (22), the winding sleeve (14) is flush and aligned in front of a pressing sleeve (148) of the same inner diameter. The knitted roll is pushed into the pressing sleeve (148) by a press die (162) and compressed therein to form a spring cushion. Then, the spring cushion is ejected from the pressing sleeve.Type: GrantFiled: September 23, 1992Date of Patent: March 1, 1994Assignee: Stop-choc Schwingungstechnik GmbH & Co KGInventor: Lothar Schaefer