Patents by Inventor David J. Butler

David J. Butler 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: 20220181978
    Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 9, 2022
    Inventors: David N. Long, Nicholas J. Piela, David J. Butler
  • Patent number: 11258366
    Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: February 22, 2022
    Assignee: Galvion Soldier Power, LLC
    Inventors: David N. Long, Nicholas J. Piela, David J. Butler
  • Publication number: 20210075326
    Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
    Type: Application
    Filed: October 27, 2020
    Publication date: March 11, 2021
    Applicant: Galvion Soldier Power, LLC
    Inventors: David N. Long, Nicholas J. Piela, David J. Butler
  • Patent number: 10848067
    Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: November 24, 2020
    Assignee: Galvion Soldier Power, LLC
    Inventors: David N. Long, Nicholas J. Piela, David J. Butler
  • Patent number: 10684601
    Abstract: A machine control and data logging station, intended for use with a saw or other machine tool, features a processor which monitors a number of input lines, a real time clock and time stamp function. Any change of input signals from the machine tool will be recorded in flash memory. Both wired and wireless outputs may read the memory at any given time. Optionally, hardware or software data communication encryption may be employed to provide increased confidentiality and security. The station continually monitors sensor inputs and can react automatically to emergency-stop the machine tool upon sensing a dangerous condition.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: June 16, 2020
    Inventor: David J Butler
  • Publication number: 20190296646
    Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 26, 2019
    Applicant: Revision Military Ltd.
    Inventors: David N. Long, Nicholas J. Piela, David J. Butler
  • Publication number: 20190011895
    Abstract: A machine control and data logging station, intended for use with a saw or other machine tool, features a processor which monitors a number of input lines, a real time clock and time stamp function. Any change of input signals from the machine tool will be recorded in flash memory. Both wired and wireless outputs may read the memory at any given time. Optionally, hardware or software data communication encryption may be employed to provide increased confidentiality and security. The station continually monitors sensor inputs and can react automatically to emergency-stop the machine tool upon sensing a dangerous condition.
    Type: Application
    Filed: January 8, 2018
    Publication date: January 10, 2019
    Inventor: David J. Butler
  • Publication number: 20160191188
    Abstract: A local interconnection carries one or more local interconnect optical channels between optical nodes at a site. The optical nodes include reconfigurable optical add-drop multiplexers (ROADMs). The local interconnect optical channels are switched by the ROADMs in the optical nodes for transmission over the local interconnection. In addition, modules within an optical node are operable to communicate using an LI optical channel that is switched over a local interconnection by a ROADM of the optical node.
    Type: Application
    Filed: December 31, 2014
    Publication date: June 30, 2016
    Applicant: ALCATEL-LUCENT USA INC.
    Inventor: David J. Butler
  • Publication number: 20160182152
    Abstract: A method includes determining a first subset of a set of optical channels, wherein each channel of the first subset has a bit error ratio (BER) greater than each channel of a remaining subset of the channels. A second subset of the set of optical channels is determined, wherein each channel of the second subset has a BER less than each channel of the remaining subset of the channels. Input power level (P) and/or dispersion compensation (D) of one or more of the channels of the first subset is adjusted, thereby reducing an aggregate BER of the first subset. P and/or D of one or more of the channels of the second subset is adjusted, thereby increasing an aggregate BER of the second subset. A reduction of an aggregate BER of the set of optical channels results from the adjusting of the first and second subsets.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 23, 2016
    Inventors: Lev Sofman, David J. Butler
  • Publication number: 20150212512
    Abstract: A machine control and data logging station, intended for use with a saw or other machine tool, features a processor which monitors a number of input lines, a real time clock and time stamp function. Any change of input signals from the machine tool will be recorded in flash memory. Both wired and wireless outputs may read the memory at any given time. Optionally, hardware or software data communication encryption may be employed to provide increased confidentiality and security. The station continually monitors sensor inputs and can react automatically to emergency-stop the machine tool upon sensing a dangerous condition.
    Type: Application
    Filed: April 8, 2015
    Publication date: July 30, 2015
    Inventor: DAVID J. BUTLER
  • Patent number: 8474087
    Abstract: A first base layer includes capability to attach the sandpaper cleaner to an appendage of the user, either elastic memory in the first embodiment, a pocket allowing the device to be worn on the hand as a mitt or, alternatively, belt-receiving slots or a protrudable flap for insertion into a user's pocket. A second layer is bonded to the upper surface of the first and features a material such as flocked foam for clearing accumulated particulate from the grit of the abrasive of the sandpaper.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: July 2, 2013
    Assignee: D3VDesign LLC
    Inventor: David J Butler
  • Patent number: 8336432
    Abstract: A safety system for a rotary saw or other dangerous machine tools features a flesh-sensing circuit (14, 19), located on a safety guard (16) surrounding a dangerous machine part, which generates an electronic signal to trigger emergency stopping of the machine before the operator can contact the dangerous machine part. The stopping means preferably employs DC injection, winding current direction reversal and/or electromagnetic motor braking, in the event of detection of operator contact with the safety guarding device. The system is adapted to be used both with newly-manufactured machine tools and by retrofitting onto previously-manufactured machine tools, by in-the-field modifications.
    Type: Grant
    Filed: September 24, 2011
    Date of Patent: December 25, 2012
    Inventor: David J Butler
  • Publication number: 20120090439
    Abstract: An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust.
    Type: Application
    Filed: December 26, 2011
    Publication date: April 19, 2012
    Inventor: David J. BUTLER
  • Patent number: 8082825
    Abstract: An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: December 27, 2011
    Inventor: David J. Butler
  • Publication number: 20100307308
    Abstract: A below-table blade enclosure for a table saw protects the health and safety of the person operating the saw, by enclosing the saw blade, and thereby protecting the operator from exposure to hazardous and potentially carcinogenic saw dust. The blade enclosure contains and collects the saw dust, which is removed from the blade enclosure by an external dust collecting system, for example via a vacuum hose.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 9, 2010
    Inventor: DAVID J. BUTLER
  • Publication number: 20100307307
    Abstract: An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 9, 2010
    Inventor: DAVID J. BUTLER
  • Patent number: 7221869
    Abstract: A system for identifying transmission rates of an optical signal transmitted in an optical communication network includes a signal converter for converting a sample of the optical signal to an electrical signal. A frequency analyzer analyzes the electrical signal to determine energy levels of the signal at predetermined frequencies. The detected energy levels are stored in a first memory device. A second memory device stores known energy levels at predetermined frequencies for a plurality of known optical transmission standards. A comparator receives the detected energy levels stored in the first memory device and compares this information to the known transmission standards stored in the second memory device in order to identify the data transmission standard of the optical signal.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: May 22, 2007
    Assignee: Alcatel Lucent
    Inventors: Robert Burford, David J. Butler, Kurt Schuder
  • Patent number: 7162164
    Abstract: An optical vestigial sideband transmitter includes first and second intensity-modulated light sources and a pair of optical splitters. A first and second wavelength combiner receives a portion of the outputs of the first and second intensity-modulated light sources. The first wavelength combiner filters the two modulated signals to generate two vestigial sideband signals and multiplexes them onto a single waveguide such as an optical fiber for output to an optical transmission medium. The second wavelength combiner operates in conjunction with the first wavelength combiner to automatically and precisely regulate the optical wavelengths of the light sources, such that the passband of the first wavelength combiner substantially suppresses the redundant sideband from each modulated signal. After transmission, a vestigial sideband receiver including a wavelength splitter and optical-to-electrical receivers extracts the multiplicity of vestigial sideband signals placing them on separate optical waveguides.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: January 9, 2007
    Assignee: Alcatel
    Inventors: Carlton D. Brown, David J. Butler
  • Publication number: 20030231889
    Abstract: An optical vestigial sideband transmitter includes first and second intensity-modulated light sources and a pair of optical splitters. A first and second wavelength combiner receives a portion of the outputs of the first and second intensity-modulated light sources. The first wavelength combiner filters the two modulated signals to generate two vestigial sideband signals and multiplexes them onto a single waveguide such as an optical fiber for output to an optical transmission medium. The second wavelength combiner operates in conjunction with the first wavelength combiner to automatically and precisely regulate the optical wavelengths of the light sources, such that the passband of the first wavelength combiner substantially suppresses the redundant sideband from each modulated signal. After transmission, a vestigial sideband receiver including a wavelength splitter and optical-to-electrical receivers extracts the multiplicity of vestigial sideband signals placing them on separate optical waveguides.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Inventors: Carlton D. Brown, David J. Butler
  • Patent number: 4033499
    Abstract: A tool for driving staples or nails and simultaneously providing reinforcement therefore. The tool is particularly useful in installing roofing material, although it has equal utility in attaching labels, tags and the like to shipping cases, and siding to buildings, and other purposes.In a preferred embodiment, the tool is provided with a handle which is long enough that a workman may operate the tool without bending over any material amount. The staple or nail driving mechanism may be of the hand-driven type or may be air, electric or spring operated. Connected to the housing of the driving mechanism is a magazine containing a considerable number of fastener reinforcing elements, such as thin metal discs, through which the staple or nail is driven in the same stroke used to drive such fastener into the object to be fastened.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: July 5, 1977
    Inventor: David J. Butler