Patents by Inventor Robert Stephen Douglass

Robert Stephen Douglass 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).

  • HIGH VOLTAGE POWER FUSE INCLUDING FATIGUE RESISTANT FUSE ELEMENT AND METHODS OF MAKING THE SAME
    Publication number: 20170365434
    Abstract: A power fuse includes a housing, first and second conductive terminals extending from the housing, and at least one fatigue resistant fuse element assembly connected between the first and second terminals. The fuse element assembly includes at least a first conductive plate and a second conductive plate respectively connecting the first and second conductive terminals, and a plurality of separately provided wire bonded weak spots interconnecting the first conductive plate and the second conductive plate.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 21, 2017
    Inventors: Robert Stephen Douglass, Ramdev Kanapady
  • MONITORING SYSTEMS AND METHODS FOR DETECTING THERMAL-MECHANICAL STRAIN FATIGUE IN AN ELECTRICAL FUSE
    Publication number: 20170363674
    Abstract: Systems and methods for detecting thermal-mechanical strain fatigue in an electrical fuse fatigue include a controller configured to monitor at least one fuse fatigue parameter over a period of time while the fuse is connected to an energized electrical power system, and based on the monitored at least one fuse fatigue parameter, the controller is further configured to determine at least one of a consumed service life of the fuse element or a service life remaining of the fuse element.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 21, 2017
    Inventors: Robert Stephen Douglass, Ramdev Kanapady
  • In-line fuse assembly
    Patent number: 9734975
    Abstract: An embodiment of an in-line fuse holder has been disclosed. The fuse holder includes a first terminal and a second terminal configured to cooperate with the first terminal in retaining a fuse between the first terminal and the second terminal, wherein each of the first and second terminals has a sidewall that defines a fuse-receiving socket, the sidewall having a plurality of apertures circumferentially spaced about the socket.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: August 15, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: Ramdev Kanapady, Robert Stephen Douglass
  • Compact dual element fuse unit, module and fusible disconnect switch
    Patent number: 9697976
    Abstract: An embodiment of a fuse module has been disclosed. The fuse module includes a housing and a fuse element assembly contained within the housing. The fuse element assembly includes at least one fuse element unit having a plurality of trigger mechanisms and a perforated strip electrically connected to the trigger mechanisms. Increased ampacity ratings in a more compact arrangement provides for fuse modules having increased current protection capability that, in turn, provides for improved disconnect switching capabilities.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: July 4, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: Advait Madhusudan Katarki, Patrick Alexander von zur Muehlen, Robert Stephen Douglass
  • ELECTRIC FUSE CURRENT SENSING SYSTEMS AND MONITORING METHODS
    Publication number: 20170122988
    Abstract: Electrical current sensing and monitoring methods include connecting sensing a voltage across a conductor having a non-linear resistance such as a fuse element. The current flowing in the conductor is calculated based on at least a first detected state of the sensed voltage and a thermal equilibrium characterization of the conductor.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 4, 2017
    Inventors: Milind Suresh Kothekar, Santosh Kumar Sharma, Robert Stephen Douglass
  • HIGH VOLTAGE COMPACT FUSE ASSEMBLY WITH MAGNETIC ARC DEFLECTION
    Publication number: 20170103866
    Abstract: Fuse assemblies in the form of fuse blocks and fuse holders include embedded permanent magnet arc suppression features that facilitate higher voltage operation of fusible circuit protection without increasing the size of the fuse assemblies. The embedded magnets apply an external magnetic field upon an overcurrent protection fuse and produce an arc deflection force to enhance arc quenching capability of the fuse without increasing its form factor.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Inventors: Xin Zhou, Robert Stephen Douglass, Vincent John Saporita
  • High voltage compact fuse assembly with magnetic arc deflection
    Patent number: 9601297
    Abstract: Fuse assemblies in the form of fuse blocks and fuse holders include embedded permanent magnet arc suppression features that facilitate higher voltage operation of fusible circuit protection without increasing the size of the fuse assemblies. The embedded magnets apply an external magnetic field upon an overcurrent protection fuse and produce an arc deflection force to enhance arc quenching capability of the fuse without increasing its form factor.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: March 21, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: Xin Zhou, Robert Stephen Douglass, Vincent John Saporita
  • HIGH VOLTAGE COMPACT FUSIBLE DISCONNECT SWITCH DEVICE WITH MAGNETIC ARC DEFLECTION ASSEMBLY
    Publication number: 20170047189
    Abstract: A compact fusible disconnect switch device includes a magnetic arc deflection assembly including at least a pair of magnets disposed about a switch contact assembly. The magnetic arc deflection assembly facilitates reliable connection and disconnection of DC voltage circuitry well above 125 VDC with reduced arcing intensity and duration. Multiple pairs of magnets may apply magnetic fields in directions opposing one another to deflect electrical arcs in different directions at more than one location in the switch contact assembly to facilitate high voltage DC operation.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 16, 2017
    Inventor: Robert Stephen Douglass
  • ELECTRIC FUSE CURRENT SENSING SYSTEMS AND MONITORING METHODS
    Publication number: 20170023618
    Abstract: Electrical current sensing and monitoring methods include connecting a compensation circuit across a conductor having a non-linear resistance such as a fuse element. The compensation circuit injects a current or voltage to the conductor that allows the resistance of the conductor to be determined. The current flowing in the conductor can be calculated based on a sensed voltage across the conductor once the resistance of the conductor has been determined.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 26, 2017
    Inventors: Robert Stephen Douglass, Santosh Kumar Sharma, Ameer Khan, Hrushikesh Arun Barve
  • High voltage compact fusible disconnect switch device with magnetic arc deflection assembly
    Patent number: 9552951
    Abstract: A compact fusible disconnect switch device includes a magnetic arc deflection assembly including at least a pair of magnets disposed about a switch contact assembly. The magnetic arc deflection assembly facilitates reliable connection and disconnection of DC voltage circuitry well above 125 VDC with reduced arcing intensity and duration. Multiple pairs of magnets may apply magnetic fields in directions opposing one another to deflect electrical arcs in different directions at more than one location in the switch contact assembly to facilitate high voltage DC operation.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 24, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventor: Robert Stephen Douglass
  • POWER FUSE AND FABRICATION METHODS WITH ENHANCED ARC MITIGATION AND THERMAL MANAGEMENT
    Publication number: 20160343531
    Abstract: Power fuses having filler material including hydrated zeolite material facilitates increasing power density of electrical fuses in reduced package sizes. The hydrated zeolite material releases water to cool and suppress electrical arcing conditions experienced in higher power circuitry.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 24, 2016
    Inventors: Robert Stephen Douglass, Sidharta Wiryana, Duren Huang, Dacheng Feng, Calvin Yang
  • COMPACT DUAL ELEMENT FUSE UNIT, MODULE AND FUSIBLE DISCONNECT SWITCH
    Publication number: 20160336137
    Abstract: An embodiment of a fuse module has been disclosed. The fuse module includes a housing and a fuse element assembly contained within the housing. The fuse element assembly includes at least one fuse element unit having a plurality of trigger mechanisms and a perforated strip electrically connected to the trigger mechanisms. Increased ampacity ratings in a more compact arrangement provides for fuse modules having increased current protection capability that, in turn, provides for improved disconnect switching capabilities.
    Type: Application
    Filed: July 28, 2016
    Publication date: November 17, 2016
    Inventors: Advait Madhusudan Katarki, Patrick Alexander von zur Muehlen, Robert Stephen Douglass
  • HIGH VOLTAGE COMPACT FUSE ASSEMBLY WITH MAGNETIC ARC DEFLECTION
    Publication number: 20160284501
    Abstract: Fuse assemblies in the form of fuse blocks and fuse holders include embedded permanent magnet arc suppression features that facilitated higher voltage operation of fusible circuit protection without increasing the size of the fuse assemblies. The embedded magnets apply an external magnetic field upon an overcurrent protection fuse and produce an arc deflection force to enhance arc quenching capability of the fuse without increasing its form factor.
    Type: Application
    Filed: March 23, 2015
    Publication date: September 29, 2016
    Inventors: Xin Zhou, Robert Stephen Douglass, Vincent John Saporita
  • COMPACT DUAL ELEMENT FUSE UNIT, MODULE AND FUSIBLE DISCONNECT SWITCH
    Publication number: 20160276123
    Abstract: An embodiment of a fuse module has been disclosed. The fuse module includes a housing and a fuse element assembly contained within the housing. The fuse element assembly includes at least one fuse element unit having a plurality of trigger mechanisms and a perforated strip electrically connected to the trigger mechanisms. Increased ampacity ratings in a more compact arrangement provides for fuse modules having increased current protection capability that, in turn, provides for improved disconnect switching capabilities.
    Type: Application
    Filed: March 20, 2015
    Publication date: September 22, 2016
    Inventors: Advait Madhusudan Katarki, Patrick Alexander von zur Muehlen, Robert Stephen Douglass
  • IN-LINE FUSE ASSEMBLY
    Publication number: 20160268091
    Abstract: An embodiment of an in-line fuse holder has been disclosed. The fuse holder includes a first terminal and a second terminal configured to cooperate with the first terminal in retaining a fuse between the first terminal and the second terminal, wherein each of the first and second terminals has a sidewall that defines a fuse-receiving socket, the sidewall having a plurality of apertures circumferentially spaced about the socket.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 15, 2016
    Inventors: Ramdev Kanapady, Robert Stephen Douglass
  • HIGH VOLTAGE COMPACT FUSIBLE DISCONNECT SWITCH DEVICE WITH MAGNETIC ARC DEFLECTION ASSEMBLY
    Publication number: 20160260571
    Abstract: A compact fusible disconnect switch device includes a magnetic arc deflection assembly including at least a pair of magnets disposed about a switch contact assembly. The magnetic arc deflection assembly facilitates reliable connection and disconnection of DC voltage circuitry well above 125 VDC with reduced arcing intensity and duration. Multiple pairs of magnets may apply magnetic fields in directions opposing one another to deflect magnetic arcs in different directions at more than one location in the switch contact assembly to facilitate high voltage DC operation.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 8, 2016
    Inventor: Robert Stephen Douglass
  • Arcless fusible switch disconnect device for DC circuits
    Patent number: 9312081
    Abstract: A fusible switch disconnect includes a fuse, a primary switch connected in series with the fuse. and a semiconductor switch device connected in parallel with the fuse. The semiconductor device is configured to resist current flow through the fuse and the primary fuse to facilitate arcless operation of the primary switch when connected to energized, DC circuitry.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: April 12, 2016
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventor: Robert Stephen Douglass
  • COMPACT HIGH VOLTAGE POWER FUSE AND METHODS OF MANUFACTURE
    Publication number: 20150348731
    Abstract: A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, arc barrier materials and single piece terminal fabrications. Methods of manufacture are also disclosed.
    Type: Application
    Filed: July 1, 2014
    Publication date: December 3, 2015
    Inventors: Robert Stephen Douglass, John Michael Fink
  • COMPACT HIGH VOLTAGE POWER FUSE AND METHODS OF MANUFACTURE
    Publication number: 20150348732
    Abstract: A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, and arc barrier materials. Methods of manufacture are also disclosed.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 3, 2015
    Applicant: COOPER TECHNOLOGIES COMPANY
    Inventors: Robert Stephen Douglass, John Michael Fink
  • Electric fuse with torque restricting terminals
    Patent number: 9196445
    Abstract: Electrical fuses include slip fit terminal elements coupled to the ends of a fuse element. The terminal elements may rotate relative to the fuse element ends as the fuses are bolted to circuit conductors and protect the fuse element from being damaged.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: November 24, 2015
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventor: Robert Stephen Douglass