Patents by Inventor Martin Engesser
Martin Engesser 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: 9033580Abstract: The fluid dynamic bearing system has at, least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.Type: GrantFiled: December 3, 2013Date of Patent: May 19, 2015Assignee: MINEBEA CO., LTD.Inventors: Thomas Fuss, Martin Engesser, Atsushi Yanagawa, Werner Schmid, Carsten Etling
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Publication number: 20140093197Abstract: The fluid dynamic bearing system has at, least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.Type: ApplicationFiled: December 3, 2013Publication date: April 3, 2014Applicant: MINEBEA CO., LTD.Inventors: Thomas FUSS, Martin ENGESSER, Atsushi YANAGAWA, Werner SCHMID, Carsten ETLING
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Patent number: 8613552Abstract: The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.Type: GrantFiled: November 17, 2009Date of Patent: December 24, 2013Assignee: Minebea Co., Ltd.Inventors: Thomas Fuss, Martin Engesser, Atsushi Yanagawa, Werner Schmid, Carsten Etling
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Patent number: 8353632Abstract: The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.Type: GrantFiled: November 17, 2009Date of Patent: January 15, 2013Assignee: Minebea Co., Ltd.Inventors: Thomas Fuss, Martin Engesser, Atsushi Yanagawa, Werner Schmid, Carsten Etling
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Patent number: 8240917Abstract: The invention relates to a fluid dynamic bearing pattern that is disposed on at least one bearing surface of the two bearing parts of a fluid dynamic bearing that are moveable with respect to each other along a direction of movement. The bearing pattern comprises two related grooved sections, each section extending at an acute angle with respect to the direction of movement and exerting a defined pumping effect on the bearing fluid found in the bearing when the bearing parts move with respect to each other. According to the invention, the first section is disposed at an angle ? and the second section at an angle ? with respect to the direction of movement, the two angles varying in size.Type: GrantFiled: September 8, 2008Date of Patent: August 14, 2012Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 8182154Abstract: The invention relates to a fluid dynamic bearing system that comprises at least one stationary part that has a shaft and two bearing plates disposed on the shaft at a mutual spacing, and at least one rotating part that is supported so as to rotate about a rotational axis with respect to the stationary part, and comprises a bearing bush and a sleeve enclosing the bearing bush. A bearing gap filled with bearing fluid is provided between the parts and at least one sealing gap for sealing the bearing gap that extends concentric to the rotational axis. The bearing comprises at least one fluid dynamic radial bearing and two fluid dynamic axial bearings and at least one recirculation channel that connects the two axial bearing regions to each other.Type: GrantFiled: April 3, 2008Date of Patent: May 22, 2012Assignee: Minebea Co., Ltd.Inventors: Martin Bauer, Jurgen Fleig, Stefan Schwamberger, Martin Engesser, Igor Ross, Thilo Rehm
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Patent number: 8007177Abstract: A fluid dynamic bearing system that has a first bearing part and a second bearing part that is rotatable with respect to the first bearing part, both of which form a bearing gap filled with a bearing fluid between opposing bearing surfaces.Type: GrantFiled: April 17, 2008Date of Patent: August 30, 2011Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 7982349Abstract: The invention relates to a spindle motor having a fluid dynamic bearing system comprising axial and radial bearings that contains a rotor component (14) which encloses a stationary shaft (12), which in turn is connected at both its ends to axially aligned bearing parts (16; 18) that are fashioned such that they form capillary sealing gaps (32; 34), a recirculation channel (28) filled with bearing fluid that connects the remote regions of the bearing to each other, and an electromagnetic drive system (42, 44) for driving the rotor component.Type: GrantFiled: November 25, 2008Date of Patent: July 19, 2011Assignee: Minebea Co., Ltd.Inventors: Vladimir V. Popov, Jurgen Fleig, Martin Bauer, Guido Schmid, Olaf Winterhalter, Mathias Wildpreth, Thomas Fuss, Martin Engesser, Stefan Schwamberger
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Publication number: 20100124387Abstract: The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system comprises at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. Moreover, sealing means for sealing the open ends of the bearing gap are provided. According to the invention, one of the sealing means comprises an annular sealing gap that has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.Type: ApplicationFiled: November 17, 2009Publication date: May 20, 2010Inventors: Thomas Fuss, Martin Engesser, Atsushi Yanagawa, Werner Schmid, Carsten Etling
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Patent number: 7699529Abstract: A fluid dynamic bearing system having pressure-generating asymmetric surface patterns, having at least two bearing parts that are rotatable with respect to each other and form a bearing gap filled with a bearing fluid between associated bearing surfaces. The surface patterns are disposed on at least one bearing surface so that hydrodynamic pressure is generated within the bearing gap when the bearing parts rotate with respect to each other. Each surface pattern comprises at least three sections, each section generating a pumping action in a defined direction, and the pumping actions of adjacent sections being substantially aligned in opposite directions. Due to the special geometry of the surface patterns, tolerances in the geometry of the bearing gap have a less significant effect on the pre-defined pumping direction.Type: GrantFiled: December 2, 2005Date of Patent: April 20, 2010Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 7602582Abstract: The bearing system according to the invention comprises a sleeve-shaped first bearing disk having a bore concentric to a rotational axis, a cylindrical shaft disposed in the bore and connected to the first bearing disk, the shaft having a second bearing disk disposed at one end that is arranged at a spacing to the first bearing disk such that an annular disk-shaped space is formed between the first and the second bearing disk. A third annular bearing disk is provided that is disposed in the annular disk-shaped space and is rotatable about the rotational axis, the opposing surfaces of the first, the second and the third bearing disk as well as the shaft being separated from one another by a bearing gap filled with bearing fluid. A radial bearing is provided between the outside circumference of the shaft and the inside circumference of the third bearing disk and marked by the hydrodynamic bearing patterns associated with the circumferential surfaces.Type: GrantFiled: July 26, 2006Date of Patent: October 13, 2009Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 7570456Abstract: The invention relates to a spindle motor having a fluid dynamic bearing system and comprises a rotor having a cylindrical shaft, a first bearing disk disposed at one end of the shaft and a second bearing disk that is disposed on the shaft at a spacing to the first bearing disk in such a way that an annular disk-shaped space is formed between the two bearing disks. A stator is provided that has an annular disk-shaped component which is disposed in the annular disk-shaped space formed by the rotor, the respective opposing bearing surfaces of the stator and of the rotor being separated from one another by a bearing gap filled with a fluid medium.Type: GrantFiled: January 4, 2006Date of Patent: August 4, 2009Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 7517153Abstract: The invention relates to a fluid dynamic bearing system that has a stationary sleeve, a stationary shaft disposed in the sleeve and bearing disks disposed on the sleeve and shaft which form an annular disk-shaped space between each other in which an annular disk-shaped component is disposed. A bearing gap filled with a bearing fluid is formed between the stationary and the rotating bearing construction.Type: GrantFiled: April 28, 2006Date of Patent: April 14, 2009Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Publication number: 20090074336Abstract: The invention relates to a fluid dynamic bearing pattern that is disposed on at least one bearing surface of the two bearing parts of a fluid dynamic bearing that are moveable with respect to each other along a direction of movement. The bearing pattern comprises two related grooved sections, each section extending at an acute angle with respect to the direction of movement and exerting a defined pumping effect on the bearing fluid found in the bearing when the bearing parts move with respect to each other. According to the invention, the first section is disposed at an angle ? and the second section at an angle ? with respect to the direction of movement, the two angles varying in size.Type: ApplicationFiled: September 8, 2008Publication date: March 19, 2009Inventors: Martin Engesser, Stefan Schwamberger
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Publication number: 20080267544Abstract: The invention relates to a fluid dynamic bearing system that has a first bearing part and a second bearing part that is rotatable with respect to the first bearing part, both of which form a bearing gap filled with a bearing fluid between opposing bearing surfaces. The bearing gap has two open ends that are each sealed against the environment by means of sealing zones. Bearing patterns used to generate hydrodynamic pressure within the bearing gap are provided on at least two spatially separated bearing surfaces. According to the invention, the bearing system is designed as a segment step bearing suited for changed directions of rotation, the ends of the sealing zones open to the environment being disposed on a smaller radial diameter than the bearing gap. The bearing fluid is thus kept in the bearing gap by means of a centrifugal force since on rotation of the bearing, the bearing fluid is pressed towards the outside and not towards the openings in the bearing gap or the sealing zones respectively.Type: ApplicationFiled: April 17, 2008Publication date: October 30, 2008Inventors: Martin Engesser, Stefan Schwamberger
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Publication number: 20080260310Abstract: The invention relates to a fluid dynamic bearing system that comprises at least one stationary part that has a shaft and two bearing plates disposed on the shaft at a mutual spacing, and at least one rotating part that is supported so as to rotate about a rotational axis with respect to the stationary part, and comprises a bearing bush and a sleeve enclosing the bearing bush. A bearing gap filled with bearing fluid is provided between the parts and at least one sealing gap for sealing the bearing gap that extends concentric to the rotational axis. The bearing comprises at least one fluid dynamic radial bearing and two fluid dynamic axial bearings and at least one recirculation channel that connects the two axial bearing regions to each other.Type: ApplicationFiled: April 3, 2008Publication date: October 23, 2008Inventors: Martin Bauer, Jurgen Fleig, Stefan Schwamberger, Martin Engesser, Igor Ross, Thilo Rehm
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Patent number: 7417342Abstract: The invention relates to a holder for the winding wires for stators of electric motors consisting of a component to be disposed on the stator having means for holding and guiding the winding wires that run between the individual stator windings. According to the invention, the holder is designed as a part of a circuit board for connecting the phase windings.Type: GrantFiled: September 12, 2006Date of Patent: August 26, 2008Assignee: Minebea Co., Ltd.Inventors: Martin Engesser, Stefan Schwamberger
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Patent number: 7413348Abstract: The invention relates to a fluid dynamic air bearing system to rotatably support a motor. The bearing system comprises a stationary shaft, a bearing bush partially enclosing the shaft and connected to the shaft, a bearing plate partially enclosing the shaft and connected to the shaft, the shaft, the bearing bush and the bearing plate between them forming a cavity that is rotationally symmetric with respect to a rotational axis. A component partially enclosing the shaft and having a sleeve-shaped section and at least one disk-shaped section is rotatably accommodated in the cavity, a bearing gap filled with air or a gas separating the surface of the rotatable component from the surfaces facing the rotatable component of the shaft, the bearing bush and the bearing plate.Type: GrantFiled: February 6, 2006Date of Patent: August 19, 2008Assignee: Minebea Co., Ltd.Inventors: Stefan Schwamberger, Martin Engesser
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Patent number: RE45387Abstract: The invention relates to a spindle motor having a fluid dynamic bearing system comprising axial and radial bearings that contains a rotor component (14) which encloses a stationary shaft (12), which in turn is connected at both its ends to axially aligned bearing parts (16; 18) that are fashioned such that they form capillary sealing gaps (32; 34), a recirculation channel (28) filled with bearing fluid that connects the remote regions of the bearing to each other, and an electromagnetic drive system (42, 44) for driving the rotor component.Type: GrantFiled: July 18, 2013Date of Patent: February 24, 2015Assignee: Minebea Co., Ltd.Inventors: Vladimir V. Popov, Jürgen Fleig, Martin Bauer, Guido Schmid, Olaf Winterhalter, Matthias Wildpreth, Thomas Fuss, Martin Engesser, Stefan Schwamberger
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Patent number: RE46300Abstract: The invention relates to a spindle motor having a fluid dynamic bearing system comprising axial and radial bearings that contains a rotor component (14) which encloses a stationary shaft (12), which in turn is connected at both its ends to axially aligned bearing parts (16; 18) that are fashioned such that they form capillary sealing gaps (32; 34), a recirculation channel (28) filled with bearing fluid that connects the remote regions of the bearing to each other, and an electromagnetic drive system (42, 44) for driving the rotor component.Type: GrantFiled: July 19, 2013Date of Patent: February 7, 2017Assignee: MINEBEA CO., LTD.Inventors: Vladimir V. Popov, Jürgen Fleig, Martin Bauer, Guido Schmid, Olaf Winterhalter, Matthias Wildpreth, Thomas Fuss, Martin Engesser, Stefan Schwamberger