Patents by Inventor Andrew D. White
Andrew D. White 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: 7564649Abstract: A head assembly having a sensor element on the head assembly. Embodiments of the sensor element are configured to detect non-contact induced head-media interface instability, “onset of contact” or low level interference. The non-contact head-media instability or interference is detected based upon sensor feedback relating to excitation of the air bearing resonance modes of the slider body. In embodiments of the present invention, the sensor head assembly includes a microactuator which is energizable to microactuate the head or transducer elements on the head assembly.Type: GrantFiled: April 27, 2005Date of Patent: July 21, 2009Assignee: Seagate Technology LLCInventors: Jorge Vicente Hanchi, Dian Song, John Stuart Wright, Andrew D. White
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Patent number: 7466520Abstract: A suspension comprises a load beam having a leading portion and a trailing portion, a gimbal sheet mounted to the leading portion and forming a first pad, a second pad, and a displacement lever assembly including at least a first lever arm having a first end adjacent and connected to the first pad and a second end opposite the first end and connected to the second pad. The displacement lever assembly is configured to translate a linear displacement of the first pad to a differing displacement of the second pad. The suspension comprises a piezoelectric element attached to the first pad and extending across the second pad.Type: GrantFiled: October 7, 2004Date of Patent: December 16, 2008Assignee: Seagate Technology LLCInventors: Andrew D. White, Wayne A. Bonin, Zine-Eddine Boutaghou
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Publication number: 20080174899Abstract: A device comprises a recordable disc, a substrate adjacent to the recordable disc, and an actuation mechanism fixed to the substrate. The recordable disc includes a base layer and a recordable layer on the base layer. Additional electrodes or magnetic components may be placed on the base layer to provide electromagnetic or electrostatic forces to rotate the recordable disc when acted on by the actuation mechanism. As an example, the invention may utilize MEMS techniques in order to integrate a disc and motor of a disc drive as a common component.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Roger L. Hipwell, Nurul Amin, John R. Pendray, Andrew D. White, Bradley J. Ver Meer, Hans L. Leuthold, Menachem Rafaelof, Wayne A. Bonin
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Publication number: 20080174907Abstract: A micro-electromechanical systems (MEMS) disc drive includes high-precision and integrated components to allow for increased functionality, robustness and reduced size as compared to currently produced disc drives. Integrating multiple subcomponents of the disc drive using batch processing provides low manufacturing costs. Furthermore, using MEMS techniques, new features can be added to disc drives. For example, an environmental control component, an accelerometer and/or a thermometer may be integrated into the housing of the disc drive.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Alan B. Johnston, Roger L. Hipwell, Hans L. Leuthold, Song Sheng Xue, Nurul Amin, Andrew D. White, Patrick Joseph Ryan, Bradley J. Ver Meer, John R. Pendray, Steven A. Kalderson, Wayne A. Bonin, Jeffery Kenneth Berkowitz
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Publication number: 20080174919Abstract: A disc drive head actuator includes a suspension structure and a slider integrated with the suspension structure. The actuator is one of at least two actuator assemblies batch-fabricated on a common substrate. The head actuator may be fabricated using mircofabrication techniques. The head actuator may have a reduced size, including package height relative to conventionally manufactured disc drives. Using mircofabrication and/or batch fabrication techniques provides reduced tolerances, which allows for increased actuation forces and/or reduced power consumption. Some embodiments include four-bar linkage actuators, which increase lateral stiffness of the actuator, allowing for a precise motion of the head relative to a media surface.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Andrew D. White, Joel D. Limmer, Roger L. Hipwell
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Publication number: 20080174906Abstract: In general, the invention is directed to techniques for integrated interconnects with a set of disc drives. The interconnects allow for a set of disc drives to be positioned in an array; for example, as set of disc drives may be stacked to communicate with a device through a single interface of the device. The interconnects may be formed as vias within the housing of the disc drives. Vias may produced using MEMS techniques, e.g., electroplating, as part of the manufacturing processes of the disc drive itself.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Alan B. Johnston, Roger L. Hipwell, Bradley J. Ver Meer, John R. Pendray, Steven A. Kalderon, Wayne A. Bonin, Jeffery Kenneth Berkowitz, Hans L. Leuthold, Song Sheng Xue, Nurul Amin, Andrew D. White, Patrick Joseph Ryan
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Publication number: 20080174915Abstract: A device comprises a fluid bearing including a textured fluid bearing surface and a second surface and a recordable disc. The recordable disc includes a substrate, a recordable media layer on the substrate, and at least one of the textured fluid bearing surface and the second surface. The device may be manufactured using MEMS techniques. MEMS techniques provide the high precision necessary to create the textured fluid bearing surface. MEMS techniques also allow the recordable disc to be batch-fabricated with one or more additional recordable discs.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Roger L. Hipwell, Nurul Amin, John R. Pendray, Andrew D. White, Bradley J. Ver Meer, Hans L. Leuthold, Menachem Rafaelof, Wayne A. Bonin
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Patent number: 6778350Abstract: A method is used for moving a transducing head between tracks of a disc in a dual-stage actuation assembly. The dual-stage actuation assembly has a main actuator for coarse positioning of the transducing head and a microactuator for fine positioning of the transducing head. The method comprises accelerating the main actuator during coarse positioning of the transducing head and applying control pulses to the microactuator during coarse positioning by the main actuator to eliminate oscillation of the microactuator during and after coarse positioning.Type: GrantFiled: June 8, 2001Date of Patent: August 17, 2004Assignee: Seagate Technology LLCInventors: Wayne A. Bonin, Zine-Eddine Boutaghou, Joel Limmer, Andrew D. White
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Patent number: 6771454Abstract: A method and data storage device are provided that reduce off-track motion due to resonant modes in the storage device. The off-track motion is reduced by sensing movement with a sensor located on a suspension assembly of the storage device. Based on this sensed movement, the sensor generates a signal that is used to drive a control system to minimize the off-track motion.Type: GrantFiled: September 4, 2001Date of Patent: August 3, 2004Assignee: Seagate Technology LLCInventors: Andrew D. White, Joel D. Limmer, Wayne A. Bonin, Zine-Eddine Boutaghou
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Publication number: 20020063989Abstract: A method and data storage device are provided that reduce off-track motion due to resonant modes in the storage device. The off-track motion is reduced by sensing movement with a sensor located on a suspension assembly of the storage device. Based on this sensed movement, the sensor generates a signal that is used to drive a control system to minimize the off-track motion.Type: ApplicationFiled: September 4, 2001Publication date: May 30, 2002Inventors: Andrew D. White, Joel D. Limmer, Wayne A. Bonin, Zine-Eddine Boutaghou
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Publication number: 20020041462Abstract: A method is used for moving a transducing head between tracks of a disc in a dual-stage actuation assembly. The dual-stage actuation assembly has a main actuator for coarse positioning of the transducing head and a microactuator for fine positioning of the transducing head. The method comprises accelerating the main actuator during coarse positioning of the transducing head and applying control pulses to the microactuator during coarse positioning by the main actuator to eliminate oscillation of the microactuator during and after coarse positioning.Type: ApplicationFiled: June 8, 2001Publication date: April 11, 2002Inventors: Wayne A. Bonin, Zine-Eddine Boutaghou, Joel Limmer, Andrew D. White
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Patent number: 6297247Abstract: Sulfonamide compounds are described which are inhibitors of matrix metalloproteinases, particularly stromelysin-1 and gelatinase A (72 kD gelatinase). Also described are methods for the treatment of multiple sclerosis, atherosclerotic plaque rupture, aortic aneurism, heart failure, restenosis, periodontal disease, corneal ulceration, burns, decubital ulcers, chronic ulcers or wounds, cancer metastasis, tumor angiogenesis, arthritis, or other autoimmune or inflammatory disorders dependent upon tissue invasion by leukocytes using the compounds.Type: GrantFiled: June 22, 2000Date of Patent: October 2, 2001Assignee: Warner-Lambert CompanyInventors: Daniel F. Ortwine, Claude F. Purchase, Jr., Andrew D. White
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Patent number: 6153612Abstract: Sulfonamide compounds are described which are inhibitors of matrix metalloproteinases, particularly stromelysin-1 and gelatinase A (72 kD gelatinase). Also described are methods for the treatment of multiple sclerosis, atherosclerotic plaque rupture, aortic aneurism, heart failure, restenosis, periodontal disease, corneal ulceration, burns, decubital ulcers, chronic ulcers or wounds, cancer metastasis, tumor angiogenesis, arthritis, or other autoimmune or inflammatory disorders dependent upon tissue invasion by leukocytes using the compounds.Type: GrantFiled: October 5, 1999Date of Patent: November 28, 2000Assignee: Warner-Lambert CompanyInventors: Daniel F. Ortwine, Claude F. Purchase, Jr., Andrew D. White
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Patent number: 5977141Abstract: Sulfonamide compounds are described which are inhibitors of matrix metalloproteinases, particularly stromelysin-1 and gelatinase A (72 kD gelatinase). Also described are methods for the treatment of multiple sclerosis, atherosclerotic plaque rupture, aortic aneurism, heart failure, restenosis, periodontal disease, corneal ulceration, burns, decubital ulcers, chronic ulcers or wounds, cancer metastasis, tumor angiogenesis, arthritis, or other autoimmune or inflammatory disorders dependent upon tissue invasion by leukocytes using the compounds.Type: GrantFiled: May 13, 1998Date of Patent: November 2, 1999Assignee: Warner-Lambert CompanyInventors: Daniel F. Ortwine, Claude F. Purchase, Jr., Andrew D. White
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Patent number: 5673870Abstract: A reel apparatus for reeling a traveling web produced on a papermaking machine comprises a rotatable support drum which is fixedly mounted in a frame. A pair of parallel, horizontally disposed rails are mounted to the frame with the tops of the rails above the apex of the support drum. New reel spools are brought into supporting engagement on the rails at a location downstream of the apex of the support drum and intermediate the apex of the support drum and a jumbo-sized wound web roll which is being wound while being powered by a centerwind assist drive, as well as nipping engagement with the support drum. Each reel spool is supported in a pair of carriages which are mounted to travel over the rails.Type: GrantFiled: December 19, 1995Date of Patent: October 7, 1997Assignee: Beloit Technologies, Inc.Inventors: Andrew Fielding, Andrew D. White
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Patent number: 5451921Abstract: An electrical assembly in which electrical connection is made to a device having two laminar electrodes and a laminar element between the electrodes, preferably a circuit protection device in which a PTC conductive polymer element is sandwiched between two metal foil electrodes. Connection is made to at least one of the electrodes by a resiliently deformed clip having an active arm which contacts one of the electrodes, and a passive arm which is not in conductive contact with the other electrode. Preferably there is an auxiliary member between the active and passive arms of the clip. The auxiliary member can be an insulator, or a conductive member which is spaced apart from the other electrode but secured to the same face of the PTC element as the other electrode.Type: GrantFiled: October 4, 1993Date of Patent: September 19, 1995Assignee: Raychem CorporationInventors: Tracy Crawford, Jim D. Beckham, Andrew D. White
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Patent number: 5441975Abstract: Pharmaceutically useful compounds having ACAT inhibitory activity of the formula ##STR1## wherein n is 0, 1, or 2, for X other than tetrazole and n=2 then R.sub.2 =R.sub.3 =H; R.sub.1 is phenyl, substituted phenyl, naphthyl, substituted naphthyl, a heteroaromatic group or a hydrocarbon group having from one to 18 carbon atoms; R.sub.2 and R.sub.3 are hydrogen, halo, hydroxy, alkyl, alkenyl, cycloalkyl, phenyl, substituted phenyl, a heteroaryl, or form a spiroalkyl group; X is a heteromonocyclic 5-membered ring containing one to four heteroatoms, said heteroatoms being nitrogen, oxygen or sulfur, and combination thereof; and R.sub.4 is a hydrocarbon group having from one to 20 carbon atoms are described as well as methods of their manufacture.Type: GrantFiled: July 12, 1994Date of Patent: August 15, 1995Assignee: Warner-Lambert CompanyInventors: Helen T. Lee, Patrick M. O'Brien, Joseph A. Picard, Claude F. Purchase, Jr., Bruce D. Roth, Drago R. Sliskovic, Andrew D. White
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Patent number: 5366987Abstract: Pharmaceutically useful compounds having ACAT inhibitory activity of the formula ##STR1## wherein n is 0, 1, or 2, for X other than tetrazole and n=2 then R.sub.2 =R.sub.3 =H; R.sub.1 is phenyl, substituted phenyl, naphthyl, substituted naphthyl, a heteroaromatic group or a hydrocarbon group having from one to 18 carbon atoms; R.sub.2 and R.sub.3 are hydrogen, halo, hydroxy, alkyl, alkenyl, cycloalkyl, phenyl, substituted phenyl, a heteroaryl, or form a spiroalkyl group; X is a heteromonocyclic 5-membered ring containing one to four heteroatoms, said heteroatoms being nitrogen, oxygen or sulfur, and combination thereof; and R.sub.4 is a hydrocarbon group having from one to 20 carbon atoms are described as well as methods of their manufacture.Type: GrantFiled: February 18, 1993Date of Patent: November 22, 1994Assignee: Warner-Lambert CompanyInventors: Helen T. Lee, Patrick M. O'Brien, Joseph A. Picard, Claude F. Purchase, Jr., Bruce D. Roth, Drago R. Sliskovic, Andrew D. White
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Patent number: 5362744Abstract: Novel ACAT inhibitors useful in the treatment of atherosclerosis which are tetrazole-substituted ureas,Type: GrantFiled: November 22, 1993Date of Patent: November 8, 1994Assignee: Warner-Lambert CompanyInventors: Claude Forsey Purchase, Jr., Andrew D. White
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Patent number: 5185358Abstract: Compounds useful in treating hypercholesterolemia and atherosclerosis having the formula ##STR1## wherein X is oxygen or sulfur, Het is a monocyclic heterocyclic group having three hetero atoms selected from nitrogen, oxygen and sulfur, and R.sub.1, R.sub.2 and R.sub.3 are hydrogen, flourine, chlorine, bromine, a straight or branched alkyl group having from 1 to 6 carbon atoms, a straight or branched alkoxy group having from 1 to 6 carbon atoms, substituted or unsubstituted benzoyl, substituted or unsubstituted benzoyl, substituted or unsubstituted phenyl, amino or substituted amino or a carboxy group.Type: GrantFiled: June 24, 1991Date of Patent: February 9, 1993Assignee: Warner-Lambert Co.Inventors: Mark W. Creswell, Andrew D. White