Patents by Inventor Richard L. Bradshaw
Richard L. Bradshaw 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: 10529370Abstract: A product, according to one embodiment, includes: a tape spool having: a first flange, a second flange, and a circular hub sandwiched between the first and second flanges. The tape spool also includes a cylindrical compliance layer which encircles the hub. The compliance layer is configured to dampen radial stress exerted on the hub by a tape wound around the hub. A product, according to another embodiment, includes: a tape cartridge having: an outer housing, and a tape spool positioned within the outer housing. The tape spool further includes: a first flange, a circular hub coupled to the first flange, and a cylindrical compliance layer which encircles the hub. A magnetic tape is also wrapped around the compliance layer and the hub. Moreover, the compliance layer is configured to dampen radial stress exerted on inner wraps of the magnetic tape.Type: GrantFiled: June 25, 2018Date of Patent: January 7, 2020Assignee: International Business Machines CorporationInventors: Nhan X. Bui, Ernest S. Gale, Kevin B. Judd, Richard A. West, Richard L. Bradshaw
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Publication number: 20190392864Abstract: A product, according to one embodiment, includes: a tape spool having: a first flange, a second flange, and a circular hub sandwiched between the first and second flanges. The tape spool also includes a cylindrical compliance layer which encircles the hub. The compliance layer is configured to dampen radial stress exerted on the hub by a tape wound around the hub. A product, according to another embodiment, includes: a tape cartridge having: an outer housing, and a tape spool positioned within the outer housing. The tape spool further includes: a first flange, a circular hub coupled to the first flange, and a cylindrical compliance layer which encircles the hub. A magnetic tape is also wrapped around the compliance layer and the hub. Moreover, the compliance layer is configured to dampen radial stress exerted on inner wraps of the magnetic tape.Type: ApplicationFiled: June 25, 2018Publication date: December 26, 2019Inventors: Nhan X. Bui, Ernest S. Gale, Kevin B. Judd, Richard A. West, Richard L. Bradshaw
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Patent number: 9324343Abstract: A magnetic storage system according to one embodiment includes a magnetic head having a removable organic coating thereon in an amount sufficient for reducing exposure of the head to oxidation promoting materials. A kit according to one embodiment includes a drive having a magnetic head, and a tape having an applicator portion for applying an organic coating to the magnetic head for reducing exposure of the head to oxidation promoting materials.Type: GrantFiled: December 18, 2014Date of Patent: April 26, 2016Assignee: International Business Machines CorporationInventors: Richard L. Bradshaw, Icko Eric Timothy Iben, Wayne A. McKinley, Lee C. Randall
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Patent number: 9159341Abstract: A product according to one embodiment includes a tape having an applicator portion for applying an organic coating to a magnetic head for reducing exposure of the head to oxidation promoting materials; the organic coating on the applicator portion of the tape; and a lubricant on a data portion of the tape. A product according to another embodiment includes a tape having a data portion along a portion of a length thereof, and a cleaning portion along another portion of the length of the tape, the cleaning portion being for removing an organic coating from a magnetic head. A magnetic storage system according to one embodiment includes a magnetic head having a removable organic coating thereon in an amount sufficient for reducing exposure of the head to oxidation promoting materials.Type: GrantFiled: October 8, 2012Date of Patent: October 13, 2015Assignee: International Business Machines CorporationInventors: Richard L. Bradshaw, Icko Eric Timothy Iben, Wayne A. McKinley, Lee C. Randall
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Publication number: 20150103441Abstract: A magnetic storage system according to one embodiment includes a magnetic head having a removable organic coating thereon in an amount sufficient for reducing exposure of the head to oxidation promoting materials. A kit according to one embodiment includes a drive having a magnetic head, and a tape having an applicator portion for applying an organic coating to the magnetic head for reducing exposure of the head to oxidation promoting materials.Type: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Inventors: Richard L. Bradshaw, Icko Eric Timothy Iben, Wayne A. McKinley, Lee C. Randall
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Publication number: 20130277600Abstract: Encapsulated particles and methods for manufacturing encapsulated particles and structures are described. Such particles may have a length no greater than 40 nm, and include at least one material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials. A polymeric encapsulant surrounds the particle, the polymeric encapsulant including a phase-separated block copolymer including a glassy first phase and a rubbery second phase, the glassy first phase positioned between the particle and the second rubbery phase. The glassy first phase includes a hydrophobic copolymer having a glass transition temperature of at least 50° C. The rubbery second phase includes a polymer having at least one of (i) a glass transition temperature of no greater than 30° C., and (ii) a tan delta peak maximum of no greater than 30° C. Other embodiments are described and claimed.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: Richard L. Bradshaw, Dong-Chul Pyun
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Publication number: 20110051277Abstract: A method is provided for securely erasing residual data on a magnetic tape formatted with a plurality of servo patterns providing boundaries between a plurality of data bands containing data that is recorded thereon during normal write operations, the data being written on many adjacent data tracks that run parallel to an edge of the magnetic tape. The method includes identifying a first edge of each of the plurality of servo patterns and erasing a portion (for example, a first half) of each of the plurality of data bands during a first pass of a tape head as it moves in a first direction. The method further includes the step of indexing the tape head to identify an opposite second edge of each of the plurality of servo patterns and erasing a different portion (for example, an opposite second half) of each of the plurality of data bands during a second pass of the tape head as the tape head moves in a second direction opposite the first direction.Type: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Inventor: Richard L. Bradshaw
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Patent number: 7849731Abstract: The present invention provides a novel method for determining the mechanical properties of the surfaces of materials including thin films. Generally, the method is comprised of laterally scanning the surface of the film with an array of cantilever tips varying temperature, load and time to obtain a measurement of mechanical properties, such as hardness and glass transition temperature. The method can be used to obtain mechanical properties of films that would otherwise be unobtainable using standard methods.Type: GrantFiled: October 14, 2008Date of Patent: December 14, 2010Assignee: International Business Machines CorporationInventors: Richard L. Bradshaw, Bernd W. Gotsmann, Urs T. Duerig
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Publication number: 20090120172Abstract: The present invention provides a novel method for determining the mechanical properties of the surfaces of materials including thin films. Generally, the method is comprised of laterally scanning the surface of the film with an array of cantilever tips varying temperature, load and time to obtain a measurement of mechanical properties, such as hardness and glass transition temperature. The method can be used to obtain mechanical properties of films that would otherwise be unobtainable using standard methods.Type: ApplicationFiled: October 14, 2008Publication date: May 14, 2009Applicant: IBM CorporationInventors: Richard L. Bradshaw, Urs T. Duerig, Bernd W. Gotsmann
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Patent number: 7451636Abstract: The present invention provides a novel method for determining the mechanical properties of the surfaces of materials including thin films. Generally, the method is comprised of laterally scanning the surface of the film with an array of cantilever tips varying temperature, load and time to obtain a measurement of mechanical properties, such as hardness and glass transition temperature. The method can be used to obtain mechanical properties of films that would otherwise be unobtainable using standard methods.Type: GrantFiled: February 21, 2006Date of Patent: November 18, 2008Assignee: International Business Machines CorporationInventors: Richard L. Bradshaw, Urs T. Duerig, Bernd W. Gotsmann
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Patent number: 5634857Abstract: The proximal and distal parts of a golf club shaft that has been cut into two parts are pivotally interconnected to one another and are releasably lockable into any one of a plurality of different positions of angular adjustment by a device having a proximal end and a distal end that are interlockable to one another. The proximal end of the device includes a sleeve that nonreleasably receives the proximal end of the golf club shaft and the distal end of the device includes a sleeve that nonreleasably receives the distal end of the shaft. The device includes a middle part having a first face plate formed by the proximal end of the device and a second face plate formed by the distal end of the device.Type: GrantFiled: May 13, 1996Date of Patent: June 3, 1997Inventors: Richard L. Bradshaw, Robert M. Bryan, John Thorniley
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Patent number: 5622535Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: May 4, 1995Date of Patent: April 22, 1997Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5594064Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: May 3, 1995Date of Patent: January 14, 1997Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5534345Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: April 17, 1995Date of Patent: July 9, 1996Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5446085Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.Type: GrantFiled: June 15, 1993Date of Patent: August 29, 1995Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 5080825Abstract: A water based cleaning composition suitable for use in tape drives including very small quantities of a surfactant, preferably a tridecyl alcohol ether of polyoxyethylene, and an ionic salt of ammonia is disclosed. The quantity of surfactant is such that it is totally water soluble and furthermore does not exist as a free solvent susceptible to evaporation into the environment. The combination of the surfactant and an ionic salt of ammonia, preferably ammonium carbonate, enhances detergency and the suspension of debris without leaving a residue. In addition, the ionic salt of ammonia is provided in a quantity which maintains a neutral pH, thereby minimizing the corrosiveness of the cleaning composition and eliminating static.Type: GrantFiled: October 30, 1989Date of Patent: January 14, 1992Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 4568611Abstract: A composition containing CrO.sub.2 and a polyester-polyurethane wherein the chain extender contains a mixture of 1,4-butanediol and 1,6-hexanediol; and use thereof, especially in magnetic recording media.Type: GrantFiled: April 3, 1985Date of Patent: February 4, 1986Assignees: Morton Thiokol, Inc., International Business Machines CorporationInventors: Charles J. Amirsakis, Richard L. Bradshaw
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Patent number: 4525424Abstract: Flexible magnetic recording media having chromium dioxide magnetic particles dispersed in a polyester-polyurethane binder which is a reaction product of (A) a hydroxyl-terminated polyester which itself is a reaction product of a hydrolytically stable difunction alcohol (preferably 1,4-cyclohexanedimethanol), (B) a chain extender (preferably 1,4-butanediol), and (C) an aromatic diisocyanate [preferably 4,4'-methylenebis (1,4-phenylene) diisocyanate (MDI)]. The proportions of (A), (B) and (C) are selected to produce a polyester polyurethane having a hard segment content in the range of 37 to 40 percent by weight, of a molecular weight above 60,000, with the soft segment molecular weight (M.sub.n) being in the range of about 500 to 1500.Type: GrantFiled: December 30, 1983Date of Patent: June 25, 1985Assignee: International Business Machines CorporationInventor: Richard L. Bradshaw
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Patent number: 4454282Abstract: A stable, non-agglomerating, magnetic recording coating ink, for use in coating a flexible non-magnetic substrate, is made by a two-step process which first mixes finely divided chromium dioxide particles with water and a polymeric surfactant/dispersant agent which has as its major functionality in a side chain, carboxylic acid, as a free acid, ester or amide thereof, and of a relatively low number average molecular weight in the range 500 to 20,000. Only after the particles are dispersed in this slurry is water-based polyurethane binder added to the slurry, as the second step in the process, to form the final ink.Type: GrantFiled: March 21, 1983Date of Patent: June 12, 1984Assignee: International Business Machines CorporationInventors: Richard L. Bradshaw, Samuel J. Falcone, Alexander Simonetti