Patents by Inventor Dieter Elsasser
Dieter Elsasser 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: 5173814Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: February 8, 1991Date of Patent: December 22, 1992Assignee: Papst-Motoren GmbH & Co. KGInventors: Dieter Elsasser, Johann von der Heide, Heinrich Cap
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Patent number: 5040085Abstract: A disk storage drive is provided with a brushless drive motor having a stator with a winding. An external rotor coaxially surrounds the stator and is spaced therefrom by a substantially cylindrical air gap. The rotor includes a permanent magnet and a soft magnetic yoke. A hub is provided that is concentric to the yoke and is connected to the rotor for rotation therewith. The hub has a disk mounting portion on its outer peripheral surface that can be passed through the central opening of a standardized storage disk for mounting the storage disks for rotation therewith. At least half of the axial longitudinal dimension of the stator winding and the rotor magnet interacting therewith is housed within the disk mounting portion of the hub. The hub is made from a non-ferromagnetic material that is suitable for storage drive clean chamber use after dimensional finishing of the hub.Type: GrantFiled: January 12, 1990Date of Patent: August 13, 1991Assignee: Papst-Motoren GmbH & Co. KGInventors: Dieter Elsasser, Johann von der Heide
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Patent number: 5006943Abstract: A disk storage drive is provided with a brushless drive motor having a stator with a winding. An external rotor coaxially surrounds the stator and is spaced therefrom by a substantially cylindrical air gap. The rotor includes a permanent magnet and a soft magnetic yoke. A hub is provided that is concentric to the yoke and is connected to the rotor for rotation therewith. The hub has a disk mounting portion on its outer peripheral surface that can be passed through the central opening of a standardized storage disk for mounting the storage disks for rotation therewith. At least half of the axial longitudinal dimension of the stator winding and the rotor magnet interacting therewith is housed within the disk mounting portion of the hub. The hub is made from a non-ferromagnetic material that is suitable for storage drive clean chamber use after dimensional finishing of the hub.Type: GrantFiled: October 18, 1988Date of Patent: April 9, 1991Assignee: Papst-Motoren GmbH & Co., KGInventors: Dieter Elsasser, Johann von der Heide
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Patent number: 5001581Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: September 5, 1989Date of Patent: March 19, 1991Assignee: Papst Motoren GmbH & CO. KGInventors: Dieter Elsasser, Johann von der Heide, Heinrich Cap
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Patent number: 4894738Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: June 2, 1988Date of Patent: January 16, 1990Assignee: Papst-Motoren GmbH & Co. KGInventors: Dieter Elsasser, Johann von der Heide, Heinrich Cap
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Patent number: 4843500Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clean chamber, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial extension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: April 14, 1989Date of Patent: June 27, 1989Assignee: Papst-Motoren GmbH & Co. KGInventors: Dieter Elsasser, Johann von Der Heide
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Patent number: 4658312Abstract: Disk storage drive for receiving at least one storage disk provided with a central opening. The disk drive is provided with an outer rotor type driving motor having a rotor casing mounted by means of a shaft in a bearing system so as to rotate relative to a stator and receive the storage disk. The stator includes magnetically active parts. At least that part of the rotor casing receiving the storage disk is made from a non-ferromagnetic material and carries the shaft either directly or by means of a hub. A shield made from a ferromagnetic material is provided as an inner part of the rotor casing. The shield envelopes the circumference and one end of the magnetically active parts of the driving motor. The outer diameter of the rotor casing is smaller than the central opening of the storage disk.Type: GrantFiled: August 21, 1985Date of Patent: April 14, 1987Assignee: Papst-Motoren GmbH & Co. K.G.Inventors: Dieter Elsasser, Bernhard Schuh
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Patent number: 4604665Abstract: A driving mechanism for magnetic hard disc memories includes an isolated space for maximum cleanness from the remainder of the apparatus, a driving motor mounted within the apparatus and having a stator and a rotor, the motor when energized having parts producing magnetic flux, a hub extending into the space of maximum cleanness for receiving therein at least one magnetic hard memory disc, a connection between the motor and the hub for driving the hub, and a magnetic flux shield located between the parts producing the magnetic flux and the space of maximum cleanness.Type: GrantFiled: November 10, 1982Date of Patent: August 5, 1986Assignee: Papst-Motoren GmbH & Co. KGInventors: Rolf Muller, Dieter Elsasser, Johann von der Heide, Georg Papst
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Patent number: RE37058Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: March 4, 1997Date of Patent: February 20, 2001Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsasser, Johann von der Heide, Heinrich Cap
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Patent number: RE38772Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: November 17, 1999Date of Patent: August 9, 2005Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsässer, Johann von der Heide, Rolf Müller
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Patent number: RE38178Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: June 18, 1999Date of Patent: July 8, 2003Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsässer, Johann von der Heide, Rolf Müller
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Patent number: RE38179Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: June 18, 1999Date of Patent: July 8, 2003Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsässer, Johann von der Heide, Rolf Müller
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Patent number: RE38601Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: June 18, 1999Date of Patent: September 28, 2004Assignee: Papst Licensing, GmbH & Co. KGInventors: Dieter Elsässer, Johann von der Heide, Rolf Müller
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Patent number: RE38662Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub. The first and second races of the motor's first and second bearings are affixed to a cylindrical surface of a bearing tube and an outer surface of the motor shaft, respectively.Type: GrantFiled: June 18, 1999Date of Patent: November 30, 2004Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsasser, Johann von der Heide
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Patent number: RE38673Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coaxially encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: June 18, 1999Date of Patent: December 21, 2004Assignee: Papst Licensing GmbH & Co. KGInventors: Dieter Elsässer, Johann von der Heide
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Patent number: RE35792Abstract: A disk memory drive includes a brushless drive outer rotor motor having an internal space and a stator with windings. The outer rotor coolly encircles the stator and a substantially cylindrical air gap is defined between the stator and the rotor. The rotor includes permanent magnets and a hub fixedly connected with the magnet. A disk mounting section is provided on the hub for accommodating at least one storage disk positioned in a clear space, the mounting section being adapted to extend through a central aperture of the storage disk. The windings and the magnets interacting with the windings are disposed for at least half of the axial longitudinal dimension thereof within a space surrounded by the disk mounting section of the hub. Bearings rotatably mount the rotor and the hub.Type: GrantFiled: April 1, 1997Date of Patent: May 12, 1998Assignee: Papst Licensing, GmbHInventors: Dieter Elsasser, Johann von der Heide, Heinrich Cap