Patents by Inventor Satya Prakash Arya
Satya Prakash Arya 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: 8085507Abstract: An apparatus and method for forming an opening in a base-metal layer of an electrical lead suspension (ELS) to increase the impedance. The method provides a base-metal layer having at least one opening. A dielectric layer above the base-metal layer is also provided, the dielectric layer covering a portion of the base-metal layer and at least one of the openings in the base-metal layer. A signal conductive layer is provided above dielectric layer. The signal conductive layer carries at least one solder pad portion, wherein the solder pad portion is aligned above the portion of the dielectric layer covering at least one of the openings in the base-metal layer. By aligning the at least one solder pad portion over the opening of the base-metal layer the solder pad to base-metal layer the impedance between the at least one solder pad portion and the base-metal layer is increased.Type: GrantFiled: January 13, 2005Date of Patent: December 27, 2011Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.Inventors: Satya Prakash Arya, Xinzhi Xing
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Patent number: 7535678Abstract: A method and system for utilizing flexible members to reduce an operational disturbance between a slider and a flexure nose portion of a head gimbal assembly is disclosed. The method provides a slider coupled with a gimbal structure of the head gimbal assembly, the slider having a read/write head element with lead terminals thereon. The method further provides a flexure nose portion coupled with the gimbal structure. A gimbal window is provided in a stainless steel layer, the gimbal window located between the slider and the flexure nose portion on the gimbal structure. A flexible member is utilized at the gimbal window for coupling the slider and the gimbal structure, the flexible member for reducing an operational disturbance passed from the slider to the flexure nose portion of the gimbal structure.Type: GrantFiled: January 10, 2006Date of Patent: May 19, 2009Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventor: Satya Prakash Arya
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Patent number: 7489479Abstract: An electrical lead suspension (ELS) having partitioned air slots. The ELS includes a laminate. A first plurality of signal traces and a second plurality of traces are in a first formed layer of the laminate. The second plurality of traces may be signal traces or power traces. The laminate has a dielectric layer between the first formed layer and a second formed layer. A plurality of partitioned air slots is in the second formed layer of the laminate. The portion of the ELS having a plurality of partitioned air slots supporting the at least the first plurality of signal traces and the portion of the ELS having a second plurality of partitioned air slots or patterns supporting the second plurality of traces. The supporting of the first plurality of signal traces separate from the second plurality of traces reduces write-to-read cross talk and signal loss.Type: GrantFiled: January 18, 2005Date of Patent: February 10, 2009Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Satya Prakash Arya, John Thomas Contreras, Klaas Klaassen, Nobumasa Nishiyama
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Patent number: 7450346Abstract: An apparatus and method for reducing heat absorption around solder pads on an electrical lead suspension (ELS). The method provides a base-metal layer having at least one opening. A dielectric layer is also provided above the base-metal layer, the dielectric layer covering a portion of the base-metal layer and at least one of the openings in the base-metal layer. A signal conductive layer is provided above dielectric layer. The signal conductive layer carries at least one solder pad portion, wherein the solder pad portion is placed above the portion of the dielectric layer such that the solder pad portion does not align with the at least one opening in the base-metal layer. In so doing, the heat absorption with respect to the base-metal layer is reduced.Type: GrantFiled: January 18, 2005Date of Patent: November 11, 2008Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Satya Prakash Arya, Xinzhi Xing
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Patent number: 7433157Abstract: An apparatus and method for reducing solder pad size in an electrical lead suspension (ELS) to decrease signal path capacitive discontinuities. The method provides a base-metal layer for the ELS. A dielectric layer above the base-metal layer is also provided. A signal conductive layer is provided above dielectric layer. The signal conductive layer carries at least one solder pad portion, wherein both a size of the solder pad portion and an amount of solder applied to the solder pad portion are reduced such that the solder pad to a ground, and solder on the solder pad to adjacent solder on adjacent pads, capacitance are reduced providing low signal reflection losses and a decrease in cross-talk.Type: GrantFiled: January 13, 2005Date of Patent: October 7, 2008Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Satya Prakash Arya, Xinzhi Xing
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Patent number: 7352535Abstract: A method and apparatus for reducing crosstalk and signal loss in an electrical interconnect is disclosed. The electrical interconnect includes a laminate. A plurality of signal traces and a subsequent plurality of traces are in a first formed layer of the laminate. The subsequent plurality of traces may be signal traces or power traces. The laminate has a dielectric layer between the first formed layer and a second formed layer. A plurality of serpentine patterns are in the second formed layer of the laminate. The plurality of serpentine patterns is separated from subsequent patterns. The plurality of serpentine patterns supports the plurality of signal traces and the subsequent plurality of patterns supports the subsequent plurality of traces. The supporting of the plurality of signal traces separate from the subsequent plurality of traces reduces write-to-read crosstalk and signal loss.Type: GrantFiled: January 13, 2005Date of Patent: April 1, 2008Assignee: Hitachi Global Storage Technologies Netherlands, B.V.Inventors: Satya Prakash Arya, John Thomas Contreras, Klaas Berend Klaassen, Nobumasa Nishiyama
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Patent number: 7283330Abstract: A method of manufacturing a suspension member designed to carry a slider and read/write head elements in a magnetic data storage device. The method includes forming the suspension member into a desired length and width configuration with a nominal thickness dimension. One or more pockets are formed in one or both surfaces of the suspension member. The pockets are treated by way of punch-coining or roll-coining to minimize pocket depth tolerances and introduce hardness and strength into surface areas of said pockets.Type: GrantFiled: April 25, 2002Date of Patent: October 16, 2007Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventor: Satya Prakash Arya
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Patent number: 7088553Abstract: A suspension load beam for carrying a slider and read/write head elements in a magnetic data storage device is formed from a composite laminate material sheet that includes first and second primary layers respectively comprising first and second structural load bearing material sheets sandwiching an intermediate secondary layer comprising a third structural load bearing material sheet. The secondary layer is made of a different material than either of the first and second primary layers. One or more areas of reduced thickness are etched into one or both of the primary layers down to the secondary layer at one or more locations on the laminate material sheet.Type: GrantFiled: April 25, 2002Date of Patent: August 8, 2006Inventors: Satya Prakash Arya, Tzong-Shii Pan
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Patent number: 7072144Abstract: The invention discloses an apparatus and method for passive damping of slider modes in a storage device. An exemplary apparatus comprises a cradle for supporting a slider and comprising two side members and a center member, where each of the side members are disposed at opposite ends of the center member, and a viscoelastic layer lining two side members and the center member of the cradle.Type: GrantFiled: May 7, 2002Date of Patent: July 4, 2006Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventor: Satya Prakash Arya
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Patent number: 6785094Abstract: A suspension assembly is designed to carry a slider and read/write head elements in a magnetic data storage device. The suspension assembly is formed from a composite laminate structure that includes first, second, third, fourth and fifth material layers. The layers are arranged such that the second layer is disposed between the first and third layers, and the fourth layer is disposed between the third and fifth layers. The laminate structure is configured using a suitable removal process, such as partial chemical etching, to define a mount plate, a hinge, a load beam functional end, and an electrical lead system. The laminate structure may be further formed with a flexure gimbal system that comprises the third, fourth and fifth layers.Type: GrantFiled: April 24, 2002Date of Patent: August 31, 2004Assignee: Hitachi Global Storage TechnologiesInventors: Satya Prakash Arya, Tzong-Shii Pan, Surya Pattanaik, Victor Wing Chun Shum
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Patent number: 6765761Abstract: A milliactuated disk drive suspension assembly includes a mount plate, a functional end for supporting a transducer-carrying slider, a hinge disposed between the mount plate and the functional end, and a sway compliant region on the mount plate adapted to facilitate displacement of the functional end in a trackwise sway direction relative to the mount plate. A pair of milliactuators can be mounted to span the compliant region in a closely spaced arrangement to develop maximum mechanical advantage between a milliactuator actuating stroke and a transducer sway stroke. The mount plate is free of swage mounting features and is mounted to a disk drive actuator arm using a swageless interconnection that allows the milliactuators to be closely spaced so as to improve their mechanical advantage.Type: GrantFiled: April 24, 2002Date of Patent: July 20, 2004Assignee: International Business Machines Corp.Inventor: Satya Prakash Arya
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Patent number: 6731466Abstract: A suspension member is designed to carry a slider and read/write head elements in a magnetic data storage device. The suspension member is formed from a composite laminate structure that includes first and second primary layers sandwiching an intermediate damping layer that lies between the primary layers. One or more integral constrained layer damping elements are disposed on the laminate structure. The configuration and location of the integral damping elements can be chosen to selectively reduce the gain of one or more dynamic frequencies (modes). Each integral damping element includes a constraining layer portion provided by an area in which one or both of the primary layers are reduced in thickness, preferably by way of a partial etching process. Each integral damping element also includes a constrained damping layer portion provided by an area of the damping layer that lies in interfacial engagement with the reduced thickness area providing the constraining layer portion.Type: GrantFiled: April 25, 2002Date of Patent: May 4, 2004Assignee: International Business Machines, Inc.Inventor: Satya Prakash Arya
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Publication number: 20030210499Abstract: The invention discloses an apparatus and method for passive damping of slider modes in a storage device. An exemplary apparatus comprises a cradle for supporting a slider and comprising two side members and a center member, where each of the side members are disposed at opposite ends of the center member, and a viscoelastic layer lining two side members and the center member of the cradle.Type: ApplicationFiled: May 7, 2002Publication date: November 13, 2003Applicant: International Business Machines CorporationInventor: Satya Prakash Arya
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Publication number: 20030202284Abstract: A suspension member is designed to carry a slider and read/write head elements in a magnetic data storage device. The suspension member is formed from a composite laminate structure that includes first and second primary layers sandwiching an intermediate damping layer that lies between the primary layers. One or more integral constrained layer damping elements are disposed on the laminate structure. The configuration and location of the integral damping elements can be chosen to selectively reduce the gain of one or more dynamic frequencies (modes). Each integral damping element includes a constraining layer portion provided by an area in which one or both of the primary layers are reduced in thickness, preferably by way of a partial etching process. Each integral damping element also includes a constrained damping layer portion provided by an area of the damping layer that lies in interfacial engagement with the reduced thickness area providing the constraining layer portion.Type: ApplicationFiled: April 25, 2002Publication date: October 30, 2003Applicant: International Business Machines CorporationInventor: Satya Prakash Arya
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Publication number: 20030202282Abstract: A method of manufacturing a suspension member designed to carry a slider and read/write head elements in a magnetic data storage device. The method includes forming the suspension member into a desired length and width configuration with a nominal thickness dimension. One or more pockets are formed in one or both surfaces of the suspension member. The pockets are treated by way of punch-coining or roll-coining to minimize pocket depth tolerances and introduce hardness and strength into surface areas of said pockets.Type: ApplicationFiled: April 25, 2002Publication date: October 30, 2003Applicant: International Business Machines CorporationInventor: Satya Prakash Arya
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Publication number: 20030202285Abstract: A suspension load beam for carrying a slider and read/write head elements in a magnetic data storage device is formed from a composite laminate material sheet that includes first and second primary layers respectively comprising first and second structural load bearing material sheets sandwiching an intermediate secondary layer comprising a third structural load bearing material sheet. The secondary layer is made of a different material than either of the first and second primary layers. One or more areas of reduced thickness are etched into one or both of the primary layers down to the secondary layer at one or more locations on the laminate material sheet.Type: ApplicationFiled: April 25, 2002Publication date: October 30, 2003Applicant: International Business Machines CorporationInventors: Satya Prakash Arya, Tzong-Shii Pan
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Publication number: 20030202283Abstract: A suspension assembly is designed to carry a slider and read/write head elements in a magnetic data storage device. The suspension assembly is formed from a composite laminate structure that includes first, second, third, fourth and fifth material layers. The layers are arranged such that the second layer is disposed between the first and third layers, and the fourth layer is disposed between the third and fifth layers. The laminate structure is configured using a suitable removal process, such as partial chemical etching, to define a mount plate, a hinge, a load beam functional end, and an electrical lead system. The laminate structure may be further formed with a flexure gimbal system that comprises the third, fourth and fifth layers.Type: ApplicationFiled: April 24, 2002Publication date: October 30, 2003Applicant: International Business Machines CorporationInventors: Satya Prakash Arya, Tzong-Shii Pan, Surya Pattanaik, Victor Wing Chun Shum
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Publication number: 20030202286Abstract: A milliactuated disk drive suspension assembly includes a mount plate, a functional end for supporting a transducer-carrying slider, a hinge disposed between the mount plate and the functional end, and a sway compliant region on the mount plate adapted to facilitate displacement of the functional end in a trackwise sway direction relative to the mount plate. A pair of milliactuators can be mounted to span the compliant region in a closely spaced arrangement to develop maximum mechanical advantage between a milliactuator actuating stroke and a transducer sway stroke. The mount plate is free of swage mounting features and is mounted to a disk drive actuator arm using a swageless interconnection that allows the milliactuators to be closely spaced so as to improve their mechanical advantage.Type: ApplicationFiled: April 24, 2002Publication date: October 30, 2003Applicant: International Business Machines CorporationInventor: Satya Prakash Arya
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Patent number: 6442828Abstract: A method for making a suspension system comprising a multiple layer flexure, a load beam and an arm. The load beam extends from the tip of the suspension all the way back to the rear of the arm. Datum holes are located in the load beam such that during assembly all reference points are made from the single load beam piece.Type: GrantFiled: February 18, 2000Date of Patent: September 3, 2002Assignee: International Business Machines CorporationInventors: David W. Albrecht, Thomas R. Albrecht, Satya Prakash Arya, Tzong-Shii Pan, Surya Pattanaik, Victor Wing Chun Shum
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Patent number: 6433967Abstract: A suspension system comprises a first rigid beam section having a first portion for connection to an actuator arm. The first rigid beam section having at least one stamped ridge which extends past the edge of an actuator arm and along the length of the first rigid section. A flexible spring section is connected to the first rigid section and a second rigid section is connected to the spring section, the second rigid section having a transducer assembly receiving portion for receiving a transducer assembly.Type: GrantFiled: March 28, 1997Date of Patent: August 13, 2002Assignee: International Business Machines CorporationInventor: Satya Prakash Arya