Patents by Inventor Jürgen Gräf
Jürgen Gräf 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: 8601988Abstract: Free piston assembly, comprising at least one piston accommodating device, at least one piston device having a first piston surface and a second piston surface facing away from the first piston surface, which is moveable in a linear manner in the corresponding piston accommodating device, and an expansion space which is arranged in the piston accommodating device and delimited by the first piston surface, wherein the piston device is arranged to be driven by the action of a medium which expands in the expansion space, wherein a resilience space arranged in the at least one piston accommodating device is delimited by the second piston surface, and wherein the resilience space is connected to at least one pre-compression chamber in fluidic manner.Type: GrantFiled: January 12, 2010Date of Patent: December 10, 2013Assignee: UMC Universal Motor Corporation GmbHInventor: Juergen Graef
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Patent number: 8390203Abstract: A method for producing a ceramic spiral pulse generator is provided. The method may include providing a film composite comprising at least one ceramic green film and at least one metal layer; winding the film composite to form a spirally wound winding; laminating the winding; and sintering the laminated winding so as to create a spiral pulse generator.Type: GrantFiled: May 26, 2008Date of Patent: March 5, 2013Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Juergen Graef, Steffen Walter, Andreas Kloss
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Patent number: 8074688Abstract: A machine tool, in particular a wood-working machine, with a tool for chip removal rotating in direction of rotation D and a suction hood covering the tool with a partially opened circumferential wall that has a radial spacing A from the tool and that has a suction nozzle for suctioning off chips. In the machine tool rotating air vortices directed in the opposite direction based on the direction of rotation D of the tool can be generated in the suction hood in the area of the suction nozzle during the chip removal.Type: GrantFiled: June 13, 2007Date of Patent: December 13, 2011Assignee: Leitz GmbH & Co. KGInventors: Markus Johannes Ernesto Beyeler, Andreas Kisselbach, Juergen Graef
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Publication number: 20100176727Abstract: A method for producing a ceramic spiral pulse generator is provided. The method may include providing a film composite comprising at least one ceramic green film and at least one metal layer; winding the film composite to form a spirally wound winding; laminating the winding; and sintering the laminated winding so as to create a spiral pulse generator.Type: ApplicationFiled: May 26, 2008Publication date: July 15, 2010Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNGInventors: Juergen Graef, Steffen Walter, Andreas Kloss
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Publication number: 20100162998Abstract: Free piston assembly, comprising at least one piston accommodating device, at least one piston device having a first piston surface and a second piston surface facing away from the first piston surface, which is moveable in a linear manner in the corresponding piston accommodating device, and an expansion space which is arranged in the piston accommodating device and delimited by the first piston surface, wherein the piston device is arranged to be driven by the action of a medium which expands in the expansion space, wherein a resilience space arranged in the at least one piston accommodating device is delimited by the second piston surface, and wherein the resilience space is connected to at least one pre-compression chamber in fluidic manner.Type: ApplicationFiled: January 12, 2010Publication date: July 1, 2010Applicant: UMC UNIVERSAL MOTOR CORPORATION GMBHInventor: Juergen Graef
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Patent number: 7612503Abstract: The elongate inner bulb (1) defines a longitudinal axis (A) and is sealed at mutually opposing ends by sealing parts (6; 32), an outer bulb being placed, with an adjoining tube piece, over the inner bulb and being fixed to the sealing part by means of an annular beading formed there, the end of the tube piece being radially attached to the beading, the maximum inner diameter of the beading being larger than the outer diameter of the sealing part in the region of the beading.Type: GrantFiled: November 21, 2005Date of Patent: November 3, 2009Assignee: Osram Gesellschaft mit beschraenkter HaftungInventors: Thomas Bittmann, Thomas Deutscher, Jürgen Gräf, Richard Semba, Marcel Vuc
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Publication number: 20090167180Abstract: The invention relates to a novel lamp which comprises a pinched base (10) that interacts with a screw cap. A pump hole (21) is integrated into the pinched base.Type: ApplicationFiled: March 13, 2007Publication date: July 2, 2009Applicant: OSRAM GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNGInventors: Jürgen Gräf, Peter Husslein
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Patent number: 7514873Abstract: The elongate bulb (1) of the lamp, which defines a longitudinal axis (A), is sealed at mutually opposing ends by sealing parts (6; 32), to which an outer bulb is fixed, the ratio between the total length of the outer bulb LAKO and the inner length of the inner volume LEG being between 1.3 and 4, preferably 1.5 and 3.Type: GrantFiled: May 1, 2006Date of Patent: April 7, 2009Assignee: Osram Gesellschaft mit beschraenkter HaftungInventors: Andreas Genz, Leon Grabinski, Jürgen Gräf
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Patent number: 7439662Abstract: Electric lamp with a base at one end, having an inner vessel surrounded by an outer jacket, a base with electric connections supporting the inner vessel and the outer jacket, having the following features: a) the base has a base insulator with a central opening with a surrounding collar in which the inner vessel is held without cement; b) the base insulator has a circular, radially projecting segment with an associated upper and lower plateau with reference to the base; c) the outer jacket has a circular opening on the base side with a radially projecting edge that has an upper and lower contact surface with reference to the base, the lower contact surface of the edge being compatible with the upper plateau of the circular, radially projecting segment at the base insulator; and d) the outer jacket is fastened on the base by a cementless mechanical holding mechanism.Type: GrantFiled: July 30, 2004Date of Patent: October 21, 2008Assignee: Patent - Trewhand - Gesellschaft für elektrische Glühlampen mbHInventors: Joachim Arndt, Uwe Fidler, Jürgen Gräf, Markus Herb, Anton Schlögl, Jürgen Waldmann, Bernhard Zöllner
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Patent number: 7358673Abstract: The bulb of the lamp is closed at opposite ends by sealing parts (6), with in each case one cap (8) being fitted at one end, the cap having an electrical contact element (13) which is connected in an electrically conductive manner to a supply conductor (15) leading to a luminous means, the contact element being accommodated in a tubular extension (11) of the sealing part. The cap part (8) has an adjustment part (14; 24), which is directed inward with respect to the interior of the lamp and is in contact with the sleeve (11) via a bracket.Type: GrantFiled: July 14, 2005Date of Patent: April 15, 2008Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Lambert Frye, Jürgen Gräf, Karl Röder, Bernhard Ulbrich
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Publication number: 20080006344Abstract: A machine tool, in particular a wood-working machine, with a tool for chip removal rotating in direction of rotation D and a suction hood covering the tool with a partially opened circumferential wall that has a radial spacing A from the tool and that has a suction nozzle for suctioning off chips. In the machine tool rotating air vortices directed in the opposite direction based on the direction of rotation D of the tool can be generated in the suction hood in the area of the suction nozzle during the chip removal.Type: ApplicationFiled: June 13, 2007Publication date: January 10, 2008Applicant: LEITZ GMBH & CO. KGInventors: Markus Beyeler, Andreas Kisselbach, Juergen Graef
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Patent number: 7288894Abstract: An electric lamp has a discharge vessel which is sealed in a vacuum-tight manner and is made from glass, the discharge vessel being surrounded in particular by an envelope part, the discharge vessel being essentially cylindrical, and defining a longitudinal axis L, and containing two electrodes at a predetermined distance from one another as well as a filling, an electrically insulated insert part also being fitted in the discharge vessel over a central part of the axial length. The electrically insulated insert part extends at least over the distance between the electrodes EA, it is fitted in the discharge vessel without the use of a retaining device, and it surrounds the electrodes in essentially tubular fashion such that it is spaced apart from them.Type: GrantFiled: September 1, 2005Date of Patent: October 30, 2007Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventor: Jürgen Gräf
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Patent number: 7253562Abstract: The elongate bulb (1) of the lamp, which defines a longitudinal axis (A), is closed at opposite ends by sealing parts (6; 32), with in each case one cap being fitted at one end, the cap having an electrical contact element (13; 25) which is connected in an electrically conductive manner to a supply conductor (15; 21) leading to a luminous means, the contact element being accommodated in a tubular extension (11; 22) of the sealing part; the contact element (13; 25) has an attachment part (14; 24) which is directed inward toward the lamp interior and is equipped with at least two barbs (20; 26) which are in contact with the tubular extension (11; 21).Type: GrantFiled: May 28, 2004Date of Patent: August 7, 2007Assignee: Patent-Treuhand-Gesellschaft fur electrische Glühlampen mbHInventors: Jürgen Gräf, Andreas Hohlfeld, Michael Hülsemann, Anton Schlögl, Karen Twesten
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Patent number: 7221098Abstract: The lamp comprises a discharge vessel (2) which is closed off in a vacuum-tight manner and is arranged in an outer bulb (12), a getter material being held on a support body inside the outer bulb (12). The support body is a support strip (31) to which the getter material is applied, the support strip being bent in such a way that it is automatically held in the outer bulb (12) without the need for any auxiliary means.Type: GrantFiled: June 2, 2004Date of Patent: May 22, 2007Assignee: Patent-Treuhand-Gesellschaft für elektrische Glülampen mbHInventors: Jürgen Gräf, Andreas Hohlfeld, Michael Hülsemann, Anton Schlögl, Karen Twesten
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Patent number: 7112116Abstract: The process comprises the provision of a discharge vessel (2) which is closed off on one side, fitting a second tube over part of the discharge vessel and evacuating and filling the volume of the outer bulb via a pumping hole, which remains open in the second extension part within the second tube. This pumping hole is only closed at the end by means of an operation which closes it by rolling.Type: GrantFiled: June 2, 2004Date of Patent: September 26, 2006Assignee: Patent-Treuhand-Gesellschaft für elektrisch Glühlampen mbHInventors: Jürgen Gräf, Andreas Hohlfeld, Michael Hülsemann, Anton Schlögl, Karen Twesten
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Patent number: 7082909Abstract: To provide a universally usable free-piston device with electric linear drive, comprising at least one piston receptacle with at least one piston device arranged for linear displacement in the piston receptacle, the piston device comprising a traveller device, and a stator device being arranged on the piston receptacle, and the at least one piston device being drivable under the action of a medium which expands in an expansion space, it is proposed that the piston stroke be variably adjustable via the linear drive such that the dead centers of the displacement of the piston device are definable.Type: GrantFiled: October 22, 2004Date of Patent: August 1, 2006Assignee: Deutsches Zentrum fur Luft- und Raumfahrt e.V.Inventors: Markus Gräf, Martin Nedele, Jürgen Gräf
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Publication number: 20030000363Abstract: In a sawing tool for a hand circular power saw with two coaxial saw blades (11, 12), which can be driven to counter-rotate in relation to each other, which each have an outer set of teeth (13, 14) that represents a main cutter, in order to improve the cutting result even with continuing wear on the cutting edge and in order to reduce damage to the teeth (13, 14) when the saw blades (11, 12) are imperfectly balanced, a trimmer (10) is disposed between the two saw blades (11, 12), which serves to cut away a piece of material possibly remaining in the kerf between the saw blades (11, 12) and which is non-rotatably attached to one of the saw blades (11, 12) and shares an axial overlap with the main cutters (FIG. 3).Type: ApplicationFiled: July 31, 2002Publication date: January 2, 2003Inventors: Albrecht Hofmann, Harald Krondorfer, Thomas Schomisch, Juergen Graef, Helmut Hammer, Andreas Kisselbach
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Patent number: D634455Type: GrantFiled: December 13, 2007Date of Patent: March 15, 2011Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Jürgen Gräf, Thomas Noll