Patents by Inventor Gregory Thomas Roth

Gregory Thomas Roth 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: 20190056340
    Abstract: A method of operating a particulate matter sensor having a pair of spaced apart electrodes and a heater includes accumulating particulate matter on the sensor, thereby changing resistance between the pair of spaced apart electrodes. The particulate matter sensor includes a sensing cycle that includes a deadband zone, followed by an active zone, which is followed by a regeneration zone in which the heater is operated to elevate the temperature of the particulate matter sensor to a first predetermined temperature for a first predetermined time in order to oxidize the particulate matter accumulated on the particulate matter sensor. The method also includes interrupting the sensing cycle with a modified regeneration zone which is either higher in temperature or length than the regeneration zone.
    Type: Application
    Filed: August 16, 2017
    Publication date: February 21, 2019
    Inventors: Gerard Wladyslaw Malaczynski, Gregory Thomas Roth
  • Publication number: 20180348109
    Abstract: A method of operating a particulate matter sensor includes accumulating particulate matter on the sensor, thereby changing resistance between electrodes of the sensor. The sensor provides a signal that varies based upon an amount of the particulate matter on the sensor and includes a measurement cycle that includes a deadband zone in which the resistance is greater than a first predetermined value, followed by an active zone in which the resistance is less than or equal to the first predetermined value, followed by a regeneration zone. A first bias voltage is applied across the electrodes during the deadband zone and a second bias voltage which is less than the first bias voltage is applied across the electrodes during the active zone. An output that is representative of the amount of the particulate matter is calculated after an end of the deadband zone is reached and prior to an end of the measurement cycle.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 6, 2018
    Inventors: Gregory Thomas Roth, Gerard Wladyslaw Malaczynski
  • Publication number: 20150114339
    Abstract: A method for starting a compression ignition engine having at least one cylinder with a reciprocating piston located therein, an intake valve configured to control the intake of air to an intake port of the cylinder and an exhaust valve configured to control the expulsion of gas from an exhaust port of the cylinder. The method includes the steps of: cranking the engine, conditioning intake air at the intake port of the cylinder to raise the temperature of air in the cylinder, controlling a valve timing the intake valve and/or the exhaust valve to allow the piston to compress the air within the cylinder, thereby increasing the temperature of the air within the cylinder, and injecting fuel into the cylinder when the air within the cylinder has been heated to a temperature sufficient to support compression ignition of a gasoline and air mixture within the cylinder.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: MARK C. SELLNAU, GREGORY THOMAS ROTH
  • Patent number: 6919051
    Abstract: A low-profile integrated catalytic converter with a coupling assembly comprises a catalytic converter with a coupling assembly integrated into the inlet end of the catalytic converter, which is attached to a mounting flange or exhaust pipe. The coupling assembly comprises two or more flexible bellows, joined together at their periphery, and containing a plurality of undulating ribs. The respective ends of the flexible bellows assembly are secured to the catalytic converter. A coupling travel limiter can optionally be concentrically disposed within the bellows assembly to limit the flexibility of the coupling and direct an exhaust gas stream into the catalytic converter.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: July 19, 2005
    Assignee: Delphi Technologies, Inc.
    Inventor: Gregory Thomas Roth
  • Patent number: 6824745
    Abstract: An catalytic converter is integrated with a flexible endcone to form an assembly. The assembly comprises a catalytic converter with a flexible endcone integrated connected to one end of the catalytic converter, which is optionally attached to a mounting flange or exhaust pipe. The endcone comprises a flexible bellow containing a plurality of undulating ribs. The flexible bellow is secured to an end of the catalytic converter at one or more interface points along the periphery of the flexible endcone assembly.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: November 30, 2004
    Assignee: Delphi Technologies, Inc.
    Inventor: Gregory Thomas Roth
  • Patent number: 6623704
    Abstract: An exemplary embodiment of the present invention is a method for manufacturing a catalytic converter. A plurality of catalyst substrates having a periphery, an intake area and an outlet area, and comprising a catalyst, is longitudinally aligned. A mat support material is wrapped about the periphery of the catalyst substrates to form a subassembly. The subassembly is concentrically disposed within a shell. The shell is formed to have a non-linear geometry.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: September 23, 2003
    Assignee: Delphi Technologies, Inc.
    Inventor: Gregory Thomas Roth
  • Patent number: 6553973
    Abstract: A fuel tank cover assembly for a fuel tank of a vehicle includes a cover adapted to close an opening in the fuel tank having a fuel reservoir disposed therein and a fuel filter disposed within and attached directly to the cover to filter fuel from the fuel tank to an engine of the vehicle.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: April 29, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Timothy Francis Coha, Jill Marie Coha, Gregory Thomas Roth
  • Publication number: 20020096505
    Abstract: A constant linear weld speed process provides constant linear weld speed welding on circular and non-circular weld profiles. A constant linear weld speed device includes a weld fixture for holding a part such as a catalytic converter part, to be welded along a weld profile, the weld fixture having a shape that is substantially the same as said weld profile. A device, such as a constant rpm drive motor, is employed to rotate the part in the weld fixture about the central axis of the weld fixture. A movable weld torch, held to the weld fixture and disposed at an approximately 90° angle to the weld profile surface, is adapted to travel radially in and out so as to follow the weld fixture profile and provide a constant linear weld speed as the weld fixture and the part rotate about the central axis. In an alternate embodiment, the weld torch is adapted to move radially and pivotally.
    Type: Application
    Filed: January 23, 2001
    Publication date: July 25, 2002
    Inventor: Gregory Thomas Roth
  • Publication number: 20020081244
    Abstract: An catalytic converter is integrated with a flexible endcone to form an assembly. The assembly comprises a catalytic converter with a flexible endcone integrated connected to one end of the catalytic converter, which is optionally attached to a mounting flange or exhaust pipe. The endcone comprises a flexible bellow containing a plurality of undulating ribs. The flexible bellow is secured to an end of the catalytic converter at one or more interface points along the periphery of the flexible endcone assembly.
    Type: Application
    Filed: December 21, 2000
    Publication date: June 27, 2002
    Inventor: Gregory Thomas Roth
  • Patent number: 6182693
    Abstract: A vapor canister and fuel tank assembly for a vehicle includes a fuel tank having an interior chamber and a tank opening communicating with the interior chamber. The vapor canister and fuel tank assembly also includes an insert disposed in the interior chamber and the tank opening and forming a vapor plenum chamber in the tank opening and a canister chamber therein. The vapor canister and fuel tank assembly includes a canister bed disposed in the canister chamber to absorb vapor fuel in the vapor plenum chamber. The vapor canister and fuel tank assembly further includes a coaxial line having one end for connection to an engine of the vehicle and another end connected to the vapor plenum chamber to allow liquid fuel to communicate with the interior chamber and vapor fuel to communicate with the vapor plenum chamber.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: February 6, 2001
    Assignee: Delphi Technologies, Inc.
    Inventors: Gary Francis Stack, Michael Paul Murphy, Gregory Thomas Roth