Patents by Inventor Bruce Harper

Bruce Harper 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).

  • Publication number: 20080093760
    Abstract: Isothermal imprint embossing system. In one embodiment, the system includes a heater to pre-heat a disk substrate to an embossing temperature, a die assembly with an embossing foil to imprint the embossable film disposed on the disk substrate, and a heat tunnel disposed between the heater and the die assembly to maintain the embossing temperature.
    Type: Application
    Filed: December 14, 2007
    Publication date: April 24, 2008
    Inventors: Bruce Harper, Toshiyuki Saito, Christopher Bajorek
  • Publication number: 20070194473
    Abstract: A die press is described. In one embodiment, the die press includes an alignment mechanism having one or more flexure members coupled to a die to maintain coupling with the die during a pressing operation.
    Type: Application
    Filed: April 18, 2007
    Publication date: August 23, 2007
    Inventor: Bruce Harper
  • Publication number: 20060216371
    Abstract: A die for a press system. The die may include a stamper and a housing, having a cavity disposed therein, coupled to the stamper. The die may also include a gasket disposed within the cavity. The gasket may be coupled to the stamper at a position above a workpiece to be imprinted by the stamper.
    Type: Application
    Filed: March 28, 2005
    Publication date: September 28, 2006
    Inventors: Andrew Homola, Bruce Harper, Christopher Bajorek
  • Publication number: 20050236738
    Abstract: A method for aligning a disk with an imprinting surface is described. In one embodiment, the method includes passively aligning an imprinting surface with the disk and imprinting the disk with the imprinting surface. A first air-bearing mandrel freely guides a first centerline of the disk into coincident alignment with a second centerline of the imprinting surface.
    Type: Application
    Filed: June 10, 2005
    Publication date: October 27, 2005
    Inventor: Bruce Harper
  • Publication number: 20050212157
    Abstract: A die press is described. In one embodiment, the die press includes an alignment mechanism having one or more flexure members coupled to a die to maintain coupling with the die during a pressing operation.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 29, 2005
    Inventor: Bruce Harper
  • Publication number: 20050158163
    Abstract: An imprint embossing alignment system. In one embodiment, the system includes a die having a bottom surface, an embossing foil positioned above the bottom surface, and a mandrel, to receive the substrate, having a rod portion that extends through a central portion of the die. The system also includes a ball bushing positioned around the rod portion and a ring portion positioned between the ball bushing and the embossing foil to hold a precise alignment of a centerline of the rod portion and a centerline of the embossing foil.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 21, 2005
    Inventors: Bruce Harper, Toshiyuki Saito
  • Publication number: 20050156342
    Abstract: Isothermal imprint embossing system. In one embodiment, the system includes a heater to pre-heat a disk substrate to an embossing temperature, a die assembly with an embossing foil to imprint the embossable film disposed on the disk substrate, and a heat tunnel disposed between the heater and the die assembly to maintain the embossing temperature.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 21, 2005
    Inventors: Bruce Harper, Toshiyuki Max Saito, Christopher Bajorek
  • Publication number: 20050150862
    Abstract: A workpiece alignment assembly. The assembly may include an embossing foil, a nest having a gas-bearing surface to receive a substrate, and piezo actuators disposed near the gas-bearing nest. In one embodiment, the piezo actuators center the substrate relative to the embossing foil.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 14, 2005
    Inventors: Bruce Harper, Christopher Bajorek
  • Publication number: 20050151300
    Abstract: Workpiece isothermal imprinting. One method involves imprinting a stamper into an embossable film at an imprinting temperature, with the embossable film disposed over a base structure. The stamper may then be separated from the embossable film at approximately the imprinting temperature.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 14, 2005
    Inventors: Bruce Harper, Christopher Bajorek
  • Publication number: 20050151282
    Abstract: A workpiece handler and alignment assembly. The assembly may include a first port coupled to a disk substrate manifold, a one or more gas jets disposed near a center portion defined by an inner diameter of the disk substrate manifold, and a second port attached to a plurality of jets. The gas jets blow gas into the center portion of a disk substrate.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 14, 2005
    Inventors: Bruce Harper, Christopher Bajorek
  • Publication number: 20050046056
    Abstract: A method of molding a disk having improved physical and/or mechanical properties, such as physical stability is described. The method is useful in the molding of disks and disk substrates for data storage media.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Jiawen Dong, Christopher Goewey, Bruce Harper, Eugene Herrmann, Robert Hossan, Matt Niemeyer
  • Patent number: 4733519
    Abstract: A method and system are provided for forming floppy disk envelopes. Envelope blanks are manipulated while attached to a continuous web of envelope material to facilitate handling and alignment of the blanks. Initially, fold lines are impressed into the envelope blanks to define the precise dimensions of the envelope. Envelope flaps are then partially folded to define a receptacle into which the disk media is then inserted. The remaining flaps are then folded and sealed, and lastly the folded envelope is detached from the continuous web. A particular apparatus for impressing the envelope blanks includes a male die, female die cavity, and mechanism for reciprocating the dies. The preferred score profile includes a pair of radii joined by a hinge section.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: March 29, 1988
    Assignee: Xidex Corporation
    Inventors: Bruce Harper, Horace N. Kemp
  • Patent number: 4630427
    Abstract: A method and system are provided for folding floppy disk envelopes. Envelope blanks are manipulated while attached to a continuous web of envelope material to facilitate handling and alignment of the blanks. Initially, fold lines are prescored into the envelope blanks to define the precise dimensions of the envelope. Envelope flaps are then partially folded to define a receptacle into which the disk media is then inserted. The remaining flaps are then folded and sealed, and lastly the folded envelope is detached from the continuous web.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: December 23, 1986
    Assignee: Xidex Corporation
    Inventors: Bruce Harper, Horace N. Kemp