Patents by Inventor David Butterfield

David Butterfield 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: 20240072383
    Abstract: A battery interconnect may include a desired current capacity, integrated fusible links, and be manufacturable using cost effective techniques. In some embodiments, a battery interconnect includes a busbar and relatively thinner links. A busbar carries larger currents and accordingly its cross-sectional areas are relatively larger to reduce ohmic losses. A link carries a much smaller current, and a fusible link is configured to break the circuit when the current is above a threshold, thus requiring a relatively small cross-sectional area. These sometime disparate length scales are addressed using several techniques such as layering a busbar and a foil sheet and pressing portions of a busbar to form the links. The links can be affixed to a plurality of battery cells to connect the cells in parallel or series.
    Type: Application
    Filed: July 17, 2023
    Publication date: February 29, 2024
    Inventors: Nathaniel Christopher Wynn, Kyle William Butterfield, Tyler David Collins, Charles Ed Chang
  • Publication number: 20220080164
    Abstract: An exoskeleton device is capable of being positioned over an expandable instrument, such as a balloon catheter. The exoskeleton device may include an expandable section that receives an expander of the expandable instrument. Expansion of the expander may cause the expandable section of the exoskeleton device to expand and force the expandable section of the exoskeleton device against a surface to be treated. The expandable section may be capable of scoring the surface against which it is forced.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Inventors: Shawn P. Fojtik, Gregory Gabay, David Butterfield
  • Patent number: 11179549
    Abstract: An exoskeleton device is capable of being positioned over an expandable instrument, such as a balloon catheter. The exoskeleton device may include an expandable section that receives an expander of the expandable instrument. Expansion of the expander may cause the expandable section of the exoskeleton device to expand and force the expandable section of the exoskeleton device against a surface to be treated. The expandable section may be capable of scoring the surface against which it is forced.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 23, 2021
    Assignee: Transit Scientific, LLC
    Inventors: Shawn P. Fojtik, Gregory Gabay, David Butterfield
  • Publication number: 20190126011
    Abstract: An exoskeleton device is capable of being positioned over an expandable instrument, such as a balloon catheter. The exoskeleton device may include an expandable section that receives an expander of the expandable instrument. Expansion of the expander may cause the expandable section of the exoskeleton device to expand and force the expandable section of the exoskeleton device against a surface to be treated. The expandable section may be capable of scoring the surface against which it is forced.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Inventors: Shawn P. Fojtik, Gregory Gabay, David Butterfield
  • Patent number: 7925872
    Abstract: One embodiment of the present invention provides a system that uses a directory service to facilitate centralized device naming. The system operates by receiving a registration of a device at a computer system. Next, the system determines if the device has been registered with the directory service. If so, the system retrieves a name of the device from the directory service. If not, the system generates a device name for the device, and registers the device name with the directory service.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: April 12, 2011
    Assignee: Oracle America, Inc.
    Inventors: Yonghong Lai, Shudong Zhou, David A. Butterfield
  • Publication number: 20080043973
    Abstract: One embodiment of the present invention provides a system that uses a directory service to facilitate centralized device naming. The system operates by receiving a registration of a device at a computer system. Next, the system determines if the device has been registered with the directory service. If so, the system retrieves a name of the device from the directory service. If not, the system generates a device name for the device, and registers the device name with the directory service.
    Type: Application
    Filed: August 7, 2006
    Publication date: February 21, 2008
    Inventors: Yonghong Lai, Shudong Zhou, David A. Butterfield
  • Patent number: 7203774
    Abstract: A kernel device file system publication system for dynamically enumerating and configuring an instance of a device in the kernel device tree upon request by a user level application. The kernel device file system logically arranges system level devices in a hierarchical tree-like topology defining devices as nodes of a device tree to allow for a top-down access. The top-down access allows devices connecting to the computer system to be configured based on the physical path of the device. This process starts at a bus nexus and drives device configuration down the device tree. The bus configuration interfaces permit each nexus in the device tree hierarchy to participate in the device lookup and readdirs operations performed by the device file system. The device file system path operations are performed as an iterative sequence of bus configure operations, whereby each nexus controls the enumeration and configuration of that nexus' children.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: April 10, 2007
    Assignee: Sun Microsystems, Inc.
    Inventors: Shudong Zhou, John Danielson, Jerry A. Gilliam, David A. Butterfield
  • Patent number: 6942061
    Abstract: A performance muffler suitable for installation into an exhaust system for an internal combustion engine wherein either end of the muffler may be designated as the entrance end for the receipt of exhaust gases into the muffler without materially altering the functionality of the muffler. A method is disclosed.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: September 13, 2005
    Assignee: Jones Exhaust Systems, Inc.
    Inventors: David A. Butterfield, Jerry E. Myers
  • Publication number: 20050133301
    Abstract: A performance muffler suitable for installation into an exhaust system for an internal combustion engine wherein either end of the muffler may be designated as the entrance end for the receipt of exhaust gases into the muffler without materially altering the functionality of the muffler. A method is disclosed.
    Type: Application
    Filed: December 17, 2003
    Publication date: June 23, 2005
    Applicant: Jones Exhaust Systems, Inc.
    Inventors: David Butterfield, Jerry Myers
  • Patent number: 6687767
    Abstract: The invention provides efficient apparatus and methods for using direct memory access (DMA) to store and retrieve data and associated check information in fixed-size blocks on a data storage device. A DMA controller of the invention obtains check information from computer main memory rather than computing the check information internally. In accordance with some embodiments of the invention, the DMA controller implements additional registers to specify, for example, the location of check information in computer main memory. The DMA controller itself carries out interleaving of data with its associated check information as it transfers information between main memory and the storage device. In accordance with some aspects of the invention, scatter/gather capability is supported.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: February 3, 2004
    Assignee: Sun Microsystems, Inc.
    Inventor: David A. Butterfield
  • Publication number: 20030084212
    Abstract: The invention provides efficient apparatus and methods for using direct memory access (DMA) to store and retrieve data and associated check information in fixed-size blocks on a data storage device. A DMA controller of the invention obtains check information from computer main memory rather than computing the check information internally. In accordance with some embodiments of the invention, the DMA controller implements additional registers to specify, for example, the location of check information in computer main memory. The DMA controller itself carries out interleaving of data with its associated check information as it transfers information between main memory and the storage device. In accordance with some aspects of the invention, scatter/gather capability is supported.
    Type: Application
    Filed: October 25, 2001
    Publication date: May 1, 2003
    Applicant: Sun Microsystems, Inc.
    Inventor: David A. Butterfield
  • Patent number: 4747040
    Abstract: The UNIX.RTM. and MS-DOS.RTM. operating systems are supported in a multi-tasking computer. At the heart of the computer is a microprocessor having protected and non-protected modes. The computer includes special-purpose hardware which prevents the MS-DOS system and its applications, which execute in the non-protected mode, from interfering with the UNIX system and its applications, which execute in the protected mode. In particular, this hardware monitors addresses generated by the computer and, by selectively inhibiting the associated control pulses, prevents the MS-DOS system from, for example, writing in UNIX-system-allocated memory, or accessing I/O devices that the UNIX system is currently using. In addition, a context switching feature is provided whereby the user can select, via a keyboard operation, to have displayed on the computer video monitor at any given time the image generated from the current UNIX system screen data or the image generated from the current MS-DOS system screen data.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: May 24, 1988
    Assignees: American Telephone & Telegraph Company, AT&T Information Systems, Inc., Locus Computing Corporation
    Inventors: David R. Blanset, David A. Butterfield, Kenneth M. Keverian, Charles S. Kline, Gerald J. Popek
  • Patent number: 4744048
    Abstract: The UNIX.RTM. and $MS-DOS sup R $ operating systems are supported in a multi-tasking computer. At the heart of the computer is a microprocessor having protected and non-protected modes. The computer includes special-purpose hardware which prevents the MS-DOS system and its applications, which execute in the non-protected mode, from interfering with the UNIX system and its applications, which execute in the protected mode. In particular, this hardware monitors addresses generated by the computer and, by selectively inhibiting the associated control pulses, prevents the MS-DOS system from, for example, writing in UNIX-system-allocated memory, or accessing I/O devices that the UNIX system is currently using. In addition, a context switching feature is provided whereby the user can select, via a keyboard operation, to have displayed on the computer video monitor at any given time the image generated from the current UNIX system screen data or the image generated from the current MS-DOS system screen data.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: May 10, 1988
    Assignees: American Telephone and Telegraph Company, AT&T Information Systems Inc., Locus Computing Corporation
    Inventors: David R. Blanset, David A. Butterfield, Kenneth M. Keverian, Charles S. Kline, Gerald J. Popek
  • Patent number: D492634
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: July 6, 2004
    Assignee: Jones Exhaust Systems
    Inventors: David A. Butterfield, Jerry E. Myers
  • Patent number: D855800
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: August 6, 2019
    Assignee: Transit Scientific, LLC
    Inventors: Gregory Gabay, David Butterfield, Shawn P. Fojtik, David Blossom
  • Patent number: D894384
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: August 25, 2020
    Assignee: Transit Scientific, LLC
    Inventors: Gregory Gabay, David Butterfield, David Blossom, Shawn P. Fojtik