Patents by Inventor Joachim Hoffmann
Joachim Hoffmann 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: 8151957Abstract: A piston plate anti-rotate mechanism in a closed piston, three passage torque converter including a cover having an inner radial surface, a drive plate comprising an annular plate, a piston plate having an axial inner crown, a front annular edge, an axial skirt, and a back annular edge, wherein the cover, drive plate, and piston plate are operatively arranged to rotate about a transverse axis of rotation, and wherein the piston plate is attached to the cover or the drive plate such that the piston plate is axially moveable and rotationally immovable relative to the cover. In some embodiment, the present invention further includes a leaf spring attaching the piston plate to the cover or the drive plate, such that the piston plate is axially moveable and rotationally immovable relative to the cover.Type: GrantFiled: December 9, 2008Date of Patent: April 10, 2012Assignee: Schaeffer Technologies AG & Co. KGInventors: Joachim Hoffmann, Thomas Heck, Ryan Cmich, Jonathan G. Jameson
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Publication number: 20110253550Abstract: A method and a device of producing a synthetic material are provided. Water (H20) is converted into hydrogen (H2) and oxygen (O2) using a high-temperature electrolysis, water vapor (H20D) being formed during the high-temperature electrolysis. Carbon dioxide (CO2) is added to the hydrogen (H2) and water vapor (H2OD). The mixture of carbon dioxide (CO2), hydrogen (H2) and water vapor (H2OD) is subjected to a catalytic reaction, wherein, through the catalytic reaction, the hydrogen (H2), the water vapor (H2OD) and the carbon dioxide (CO2) are transformed into a synthetic gas (H2/CO/CO2/H2O/CH4). Exothermic processes are executed during the transforming into the synthetic gas.Type: ApplicationFiled: October 26, 2009Publication date: October 20, 2011Inventor: Joachim Hoffmann
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Patent number: 8033896Abstract: A protective cover of a hand-held cut-off machine has a bracket that is secured on the exterior side of the protective cover. The bracket is locked in at least one locked position with at least one locking projection in at least one receptacle of the protective cover. The bracket is releasable from the locked position by a movement of the bracket in the release direction. A simple release of the bracket can be achieved in that the protective cover has means that move the locking projection upon movement of the bracket in the release direction at least partially out of the receptacle.Type: GrantFiled: July 7, 2008Date of Patent: October 11, 2011Assignee: Andreas Stihl AG & Co. KGInventors: Helmar Amend, Joachim Hoffmann, Ernst Buck
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Patent number: 7918645Abstract: The invention broadly comprises a torque converter including: a core ring; a turbine blade connected to the ring and having a perimeter with a segment facing an outer surface of the ring and disposed proximate the outer surface; and joining material fixedly connecting less than the entirety of the segment to the outer surface. The segment is fixedly connected to reduce resonance in the turbine. In some aspects, the ring includes an inner surface oppositely disposed from the outer surface and an open path between the surfaces. The present invention broadly comprises a notched turbine blade and a core ring with a discontinuity in an outer surface arranged to block capillary action for flowable joining material disposed in an interface between a turbine blade installed on the ring and the outer surface. The invention also broadly comprises a method for controlling resonance of a turbine in a torque converter.Type: GrantFiled: June 6, 2007Date of Patent: April 5, 2011Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Donald McCullick, Christopher Sidor, Joachim Hoffmann, Chad Keets, Patanjali Peri
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Patent number: 7905223Abstract: A guide cart for a hand-held power tool with a driven tool has a pivot device that is pivotable between an open position and a fixation position. A fixation elements is provided that releasably secures the power tool on the guide cart. The fixation element is secured on the pivot device. The pivot device has at least one support for supporting a tool of the power tool in the fixation position of the pivot device. The guide cart has a holder for the power tool, wherein holder is provided with a base plate and has at least one lateral guide for the power tool. The pivot device is supported on the base plate. The pivot device and the baseplate together form a C-shaped frame.Type: GrantFiled: March 12, 2008Date of Patent: March 15, 2011Assignee: Andreas Stihl AG & Co. KGInventors: Stefan von Siegroth, Joachim Hoffmann, Sebastian Friedrich, Klaus-Martin Uhl
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Patent number: 7770707Abstract: The present invention broadly comprises a stator for a torque converter with first and second plates. The first plate is connected to a rim for the stator and includes at least one first opening. The second plate is connected to the a hub for the stator and includes at least one first protrusion lockingly engageable with the at least one first opening. The first plate is rotatable about an axis for the hub and the at least one first protrusion and the at least one first opening are lockingly engageable when the first plate is rotated in a first direction with respect to the axis. The at least one first protrusion and the at least one first opening are slidingly engageable when the first plate is rotated in a second direction opposite the first direction.Type: GrantFiled: July 3, 2006Date of Patent: August 10, 2010Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: William Brees, Jeffrey Hemphill, Joachim Hoffmann
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Publication number: 20100112625Abstract: An apparatus and a method for processing tissue samples are described. The apparatus comprises: at least one retort for accommodating tissue samples; at least one container for storing alcohol or xylene; a valve adapted to connect the at least one retort with the at least one container depending on an operating position of the valve; and at least a first sensor that is arranged in flow direction between the container and the retort for measuring a value of a parameter that represents a purity level of the alcohol or xylene; wherein the first sensor and the valve are configured to replace the alcohol or xylene depending on the value of the parameter that represents the purity level. The method comprises for the alcohol or xylene conducting between the container and the retort; automatically measuring the purity level and replacing depending on the purity level.Type: ApplicationFiled: October 27, 2009Publication date: May 6, 2010Applicant: LEICA BIOSYSTEMS NUSSLOCH GMBHInventors: Michael Erben, Nils Jakob, Claus Haberkorn, Frank Meder, Michael Rapp, Joachim Hoffmann
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Patent number: 7621122Abstract: A torque converter with torus shape that is sheared such that imagined axial sections through the torus shape, starting from the inner stator passage diameter, are shifted increasingly axially in one direction as the effective radius increases.Type: GrantFiled: April 12, 2007Date of Patent: November 24, 2009Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Bhaskar Marathe, Joachim Hoffmann
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Publication number: 20090283286Abstract: A power tool with a drive motor and a drive belt guided about a drive pulley and an output pulley has a tool driven by the drive motor through the drive belt. A tensioning device is provided that changes a spacing between the drive pulley and the output pulley and has at least one tensioning position and at least one release position. In the at least one tensioning position, the drive pulley and the output pulley have a first spacing relative to one another and in the at least one release position have a second spacing to one another that is smaller than the first spacing. The drive belt is an elast belt and the tensioning device, as a result of inherent tension of the elast belt, is secured in the at least one tensioning position.Type: ApplicationFiled: May 8, 2009Publication date: November 19, 2009Applicant: Andreas Stihl AG & Co. KGInventors: Joachim Hoffmann, Stefan von Siegroth
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Publication number: 20090152068Abstract: A piston plate anti-rotate mechanism in a closed piston, three passage torque converter including a cover having an inner radial surface, a drive plate comprising an annular plate, a piston plate having an axial inner crown, a front annular edge, an axial skirt, and a back annular edge, wherein the cover, drive plate, and piston plate are operatively arranged to rotate about a transverse axis of rotation, and wherein the piston plate is attached to the cover or the drive plate such that the piston plate is axially moveable and rotationally immovable relative to the cover. In some embodiment, the present invention further includes a leaf spring attaching the piston plate to the cover or the drive plate, such that the piston plate is axially moveable and rotationally immovable relative to the cover.Type: ApplicationFiled: December 9, 2008Publication date: June 18, 2009Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Joachim Hoffmann, Thomas Heck, Ryan Cmich, Jonathan G. Jameson
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Patent number: 7520799Abstract: A protective cover of a hand-held cut-off machine has a cover member having an interior. At least two injection nozzles for spraying a cooling liquid into the interior are arranged on the cover member. A supply line for supplying the cooling liquid to the at least two injection nozzles is provided. A bow is arranged outside of the cover member. The supply line has a line section that extends from a first injection nozzle to a second injection nozzle through the bow.Type: GrantFiled: October 26, 2005Date of Patent: April 21, 2009Assignee: Andreas Stihl AG & Co. KGInventors: Christina Wedel, Maximilian Eberhardt, Klaus-Martin Uhl, Joachim Hoffmann, Jurgen Erath
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Publication number: 20090013541Abstract: A protective cover of a hand-held cut-off machine has a bracket that is secured on the exterior side of the protective cover. The bracket is locked in at least one locked position with at least one locking projection in at least one receptacle of the protective cover. The bracket is releasable from the locked position by a movement of the bracket in the release direction. A simple release of the bracket can be achieved in that the protective cover has means that move the locking projection upon movement of the bracket in the release direction at least partially out of the receptacle.Type: ApplicationFiled: July 7, 2008Publication date: January 15, 2009Applicant: ANDREAS STIHL AG & CO. KGInventors: Helmar Amend, Joachim Hoffmann, Ernst Buck
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Torque converter with cooling fluid flow arrangement and arrangement for torque transfer to a damper
Publication number: 20080277223Abstract: A torque converter including: a membrane forming a portion of a release chamber for the clutch; a friction plate for a torque converter clutch, the plate rotationally connected to a turbine hub and disposed within the release chamber; and a damper element rotationally connected to the turbine hub and to the torque converter clutch. In lock-up mode for the converter, the plate is arranged to transmit torque to the turbine hub. The torque converter includes cooling fluid and a torus and the clutch further comprises friction material and in some aspects, during the lock-up mode, the release chamber is sealed except for a flow of the cooling fluid from the release chamber through the friction material to the torus. The plate includes oppositely disposed first and second radial surfaces and during a torque converter mode for the torque converter, respective pressures on the first and second surfaces are substantially equal.Type: ApplicationFiled: May 1, 2008Publication date: November 13, 2008Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Yang LIANG, Michael G. Swank, Jonathan G. JAMESON, Kevin PARKS, Steven OLSEN, Joachim HOFFMANN -
Publication number: 20080233847Abstract: A guide cart for a hand-held power tool with a driven tool has a pivot device that is pivotable between an open position and a fixation position. A fixation elements is provided that releasably secures the power tool on the guide cart. The fixation element is secured on the pivot device. The pivot device has at least one support for supporting a tool of the power tool in the fixation position of the pivot device. The guide cart has a holder for the power tool, wherein holder is provided with a base plate and has at least one lateral guide for the power tool. The pivot device is supported on the base plate. The pivot device and the baseplate together form a C-shaped frame.Type: ApplicationFiled: March 12, 2008Publication date: September 25, 2008Applicant: ANDREAS STIHL AG & CO. KGInventors: Stefan von Siegroth, Joachim Hoffmann, Sebastian Friedrich, Klaus-Martin Uhl
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Patent number: 7350509Abstract: The invention relates to a delivery unit (2) comprising a swirl pot (5), a fuel pump (6) placed therein, and a filter, which is placed on the bottom (7) of the swirl pot (5) and which is radially flowed against. This filter is formed by shaped elements axially protruding from the bottom (7) of the swirl pot (5) whereby forming an axially extending gap (11, 11a, 11b) between every two adjacent shaped elements (10), and the filter surrounds an inlet opening (13) located in the bottom (7) of the swirl pot (5). At least one flow-through area (12) is situated perpendicular to the gaps (11, 11a, 11b) and perpendicular to the flow-through direction, this at least one area (12) connecting at least two adjacent gaps (11, 11a, 11b).Type: GrantFiled: January 27, 2005Date of Patent: April 1, 2008Assignee: Siemens AktiengesellschaftInventors: Torsten Barz, Joachim Hoffmann
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Publication number: 20080044285Abstract: The invention broadly comprises a torque converter including: a core ring; a turbine blade connected to the ring and having a perimeter with a segment facing an outer surface of the ring and disposed proximate the outer surface; and joining material fixedly connecting less than the entirety of the segment to the outer surface. The segment is fixedly connected to reduce resonance in the turbine. In some aspects, the ring includes an inner surface oppositely disposed from the outer surface and an open path between the surfaces. The present invention broadly comprises a notched turbine blade and a core ring with a discontinuity in an outer surface arranged to block capillary action for flowable joining material disposed in an interface between a turbine blade installed on the ring and the outer surface. The invention also broadly comprises a method for controlling resonance of a turbine in a torque converter.Type: ApplicationFiled: June 6, 2007Publication date: February 21, 2008Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Donald McCullick, Christopher Sidor, Joachim Hoffmann, Chad Keets, Pantanjali Peri
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Publication number: 20070240412Abstract: A torque converter with torus shape that is sheared such that imagined axial sections through the torus shape, starting from the inner stator passage diameter, are shifted increasingly axially in one direction as the effective radius increases.Type: ApplicationFiled: April 12, 2007Publication date: October 18, 2007Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Bhaskar Marathe, Joachim Hoffmann
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Publication number: 20070215537Abstract: The invention relates to a delivery unit (2) comprising a swirl pot (5), a fuel pump (6) placed therein, and a filter, which is placed on the bottom (7) of the swirl pot (5) and which is radially flowed against. This filter is formed by shaped elements axially protruding from the bottom (7) of the swirl pot (5) whereby forming an axially extending gap (11, 11a, 11b) between every two adjacent shaped elements (10), and the filter surrounds an inlet opening (13) located in the bottom (7) of the swirl pot (5). At least one flow-through area (12) is situated perpendicular to the gaps (11, 11a, 11b) and perpendicular to the flow-through direction, this at least one area (12) connecting at least two adjacent gaps (11, 11a, 11b).Type: ApplicationFiled: January 27, 2005Publication date: September 20, 2007Applicant: Siemens AktiengesellschaftInventors: Torsten Barz, Joachim Hoffmann
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Patent number: 7261624Abstract: A protective cover for a cutting wheel of a hand-held cut-off machine driven by an internal combustion engine has a circumferential wall and two opposed sidewalls adjoining the circumferential wall. The circumferential wall and the two sidewalls are a monolithic component made of cast light metal. The circumferential wall in a circumferential direction has at least over sections thereof a first integral thicker portion. The two sidewalls are thinner than the first integral thicker portion. Preferably, the protective cover is made of diecast magnesium.Type: GrantFiled: October 26, 2005Date of Patent: August 28, 2007Assignee: Andreas Stihl AG & Co. KGInventors: Christina Wedel, Klaus-Martin Uhl, Maximilian Eberhardt, Jurgen Erath, Joachim Hoffmann, Rolf Ademes
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Publication number: 20070048082Abstract: An assembly for improving a connection between splined assemblies generally includes first and second assemblies each having at least one spline thereon, an integral fastening assembly for axially fastening the first assembly with respect to the second assembly, and a biasing assembly for asserting a force to oppositely rotationally dispose the first and second assemblies with respect to one another. In an embodiment, the first and second assemblies are annular plates. A method for improving a connection between splined assemblies generally includes asserting a bias upon first and second assemblies such that are oppositely rotationally disposed with respect to one another. In the above method, the first assembly and the second assembly each have at least one spline, an integral fastening assembly for axially securing the first and second assemblies, and a biasing assembly. In an embodiment of the above method, the first and second assemblies are annular plates.Type: ApplicationFiled: August 24, 2006Publication date: March 1, 2007Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Joachim Hoffmann, Todd Sturgin, Jean-Francois Heller