Patents by Inventor Keith Hampton

Keith Hampton 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: 20190256070
    Abstract: A Venturi device for producing vacuum from fluids in an engine system has a body defining a Venturi gap separating apart an outlet end of a converging motive section and an inlet end of a diverging discharge section by a lineal distance, and a suction port in fluid communication with the Venturi gap. The converging motive section and the diverging discharge section both gradually, continuously taper toward the Venturi gap, the converging motive section defines a circular-shaped motive inlet and an elliptical- or polygonal-shaped motive outlet, the diverging discharge section defines an elliptical- or polygonal-shaped discharge inlet, and an inner passageway of the converging motive section transitions as a hyperbolic function from the motive inlet to the elliptical- or polygonal-shaped motive outlet.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 22, 2019
    Applicant: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert
  • Publication number: 20190234430
    Abstract: An evacuator for supplying vacuum to a device in a boosted engine air system is disclosed. The evacuator defines a body comprising a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. A lineal distance is measured between the outlet end and the inlet end. The lineal distance is decreased in length if higher suction vacuum at a specific set of operating conditions is required and the lineal distances is increased in length if higher suction flow rate at the specific set of operating conditions is required.
    Type: Application
    Filed: April 3, 2019
    Publication date: August 1, 2019
    Applicant: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Matthew C. Gilmer, Keith Hampton, Andrew D. Niedert, Denis Vashuk
  • Patent number: 10336305
    Abstract: A Venturi device for producing vacuum from fluids in an engine system has a body defining a Venturi gap separating apart an outlet end of a converging motive section and an inlet end of a diverging discharge section by a lineal distance, and a suction port in fluid communication with the Venturi gap. The converging motive section and the diverging discharge section both gradually, continuously taper toward the Venturi gap, the converging motive section defines a circular-shaped motive inlet and an elliptical- or polygonal-shaped motive outlet, the diverging discharge section defines an elliptical- or polygonal-shaped discharge inlet, and an inner passageway of the converging motive section transitions as a hyperbolic function from the motive inlet to the elliptical- or polygonal-shaped motive outlet.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 2, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: Dave Fletcher, Brian Graichen, Keith Hampton, Matt Gilmer, Andrew Niedert
  • Patent number: 10316864
    Abstract: Devices for producing vacuum using the Venturi effect have a housing defining a suction chamber, a motive passageway converging toward the suction chamber, a discharge passageway diverging away from the suction chamber, and a suction passageway in fluid communication with the suction chamber. A solenoid valve is positioned in the suction passageway and has an elongate sealing member received inside a coil, a first seal seat at a first end of the coil, and a second seal seat at the second end of the coil. The elongate sealing member is translatable within the coil between the first seal seat and the second seal seat, which define an open position and a closed position. Within the suction chamber, a motive exit of the motive passageway is generally aligned with and spaced apart from a discharge entrance of the discharge passageway to define a Venturi gap.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 11, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Keith Hampton
  • Patent number: 10273978
    Abstract: An evacuator for supplying vacuum to a device in a boosted engine air system is disclosed. The evacuator defines a body comprising a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. A lineal distance is measured between the outlet end and the inlet end. The lineal distance is decreased in length if higher suction vacuum at a specific set of operating conditions is required and the lineal distances is increased in length if higher suction flow rate at the specific set of operating conditions is required.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 30, 2019
    Assignee: Dayco IP, Holdings LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Matthew C. Gilmer, Keith Hampton, Andrew D. Niedert, Denis Vashuk
  • Patent number: 10239187
    Abstract: Methods for post-mold processing a Venturi device for generating vacuum are disclosed that improve the evacuation time thereof. The methods include providing a molded Venturi device having a body defining a Venturi gap between an outlet end of a converging motive passageway and an inlet end of a diverging discharge passageway, where the outlet end defines a motive exit having flash extending radially inward and the inlet end defines a discharge inlet having flash extending radially inward. Then, the method includes positioning the molded Venturi device with an inlet end of the converging motive passageway facing a blasting nozzle or with an outlet end of a diverging discharge passageway facing a blasting nozzle, and propelling blasting media into the motive inlet or the discharge exit of the Venturi device to remove the flash in the motive exit and in the discharge inlet, or vice versa.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: March 26, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Matthew C. Gilmer, Keith Hampton, Andrew D. Niedert
  • Publication number: 20190085835
    Abstract: Start-stop engine systems for a turbocharged engine have a bypass with fluid flow from upstream of the compressor or downstream of the compressor to a position between the throttle and the engine, or from between the compressor and throttle to a position upstream of the compressor with a Venturi device in the bypass. A device requiring vacuum is in fluid communication with a suction port of the Venturi device. An electronic vacuum pump is added that is in fluid communication with the device requiring vacuum or with the Venturi device. The electronic vacuum pump is operated during a stop condition of the start-stop engine to replace the vacuum generated by the Venturi device or to provide a pressure drop across the Venturi device so the Venturi device continues to generate vacuum for the device requiring vacuum.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 21, 2019
    Applicant: Dayco IP Holdings, LLC
    Inventors: Keith Hampton, David E. Fletcher, Brian M. Graichen, James H Miller
  • Patent number: 10221867
    Abstract: An aspirator for creating vacuum is disclosed that includes a housing defining a fluid passageway with a first tapering portion and a second tapering portion. Each tapering portion has a larger internal opening and a smaller internal opening, the smaller openings facing one another. The aspirator includes a gate positioned between and in fluid communication with the first and second tapering portions, the gate having a first Venturi tube with a Venturi opening creating vacuum when fluid flows in a direction and a second Venturi tube with a Venturi opening that creates vacuum when fluid flows in the opposite direction. The Venturi openings are in fluid communication with a suction port, and the first and second Venturi tubes may provide different mass flow rates through the aspirator. An engine system having an aspirator with a gate having a first bore and a second bore and an actuator is also disclosed.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: March 5, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: Keith Hampton, David Fletcher, Brian M. Graichen, Rex Bravo, James H. Miller, Matt Gilmer, Andrew Niedert
  • Patent number: 10190549
    Abstract: Check valves, Venturi devices and engines having such check valves, define an internal cavity having a first port and a second port, a first seat and a second seat, and a translatable seal disk. The check valves have an outlet conduit extending from the second port and/or the first seat has a first annular seal bead and a second annular seal bead disposed radially inward of the first annular seal bead with a plurality of ribs extending between the first annular seal bead and the second annular seal bead within the fluid flow path of the first port. The outlet conduit defines an outlet passageway having a restrictor profile that is circular in a transverse profile, and the ribs decrease the flow area of the fluid flow path of the first port by about 10% to about 60%.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 29, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, Matthew C. Gilmer, Andrew D. Niedert, James H. Miller, Keith Hampton
  • Patent number: 10190455
    Abstract: A device for producing vacuum using the Venturi effect, systems utilizing the device, and methods of making the device are disclosed. The device has a housing defining a Venturi gap, a motive passageway converging toward the Venturi gap and in fluid communication therewith, a discharge passageway diverging away from the Venturi gap and in fluid communication therewith, and a suction passageway in fluid communication with the Venturi gap. The suction passageway has an interior surface with a surface topography that renders the interior surface hydrophobic and has an oleophobic coating applied to the interior surface while maintaining the surface topography.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: January 29, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: Keith Hampton, David E. Fletcher, Brian M. Graichen, James H. Miller, Andrew D. Niedert
  • Patent number: 10170895
    Abstract: A power amplifier circuit for a corona ignition system is provided. The circuit includes an inductor and capacitor connected to one end of a secondary winding of an RF transformer. The other end of the secondary winding is connected to a current sensor which is connected to ground. The transformer also has a primary winding with one end connected to a voltage supply and the other end attached to a pair of switches. The windings are wound around a core. Current flowing from the DC voltage supply to the switches causes a magnetic flux in the core. A voltage is generated on the secondary winding by the current that flows through the igniter. This voltage is fed back to the switches, controlling on and off timing. Voltage is provided to the corona igniter or pulled from the igniter when the current traveling into or from the igniter is at zero.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: January 1, 2019
    Assignee: Tenneco Inc.
    Inventors: Keith Hampton, Alfred Permuy, John Antony Burrows
  • Patent number: 10167971
    Abstract: Engine systems have an air induction system, a turbocharger in fluid communication with an intake manifold, an evacuator defining a Venturi gap with a suction port in fluid communication therewith, a relief valve enclosing a piston and defining an inlet and an outlet in selective fluid communication with one another, and a storage tank of high pressure air in fluid communication with the evacuator. The relief valve has a valve element connected to the piston, and the piston divides the housing into a pressurized chamber in fluid communication with the suction port of the evacuator and a bypass portion in fluid communication with the inlet, which is in fluid communication with the compressed air from the turbocharger, and the outlet, which is in fluid communication with the air induction system or atmosphere. A discharge cone of the evacuator is in fluid communication with atmosphere or the air induction system.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 1, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Keith Hampton, Matthew C. Gilmer
  • Patent number: 10151283
    Abstract: An evacuator is disclosed, and includes a body defining a central axis, a converging motive section, a diverging discharge section, at least one suction port, and at least one Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The evacuator also includes a fin positioned within the motive section of the body. The fin extends in the direction of the central axis.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: December 11, 2018
    Assignee: Dayco IP Holdings, LLC
    Inventors: Brian M. Graichen, Keith Hampton
  • Patent number: 10132424
    Abstract: A variable flow valve assembly is disclosed, and includes a main body, a piston, a position sensor, a controller, a solenoid, and a cover. The main body defines a chamber, an inlet port, an outlet port, and a wall located between the inlet port and the outlet port. The wall defines a metering orifice for selectively allowing a medium to flow from the inlet port to the outlet port. The chamber of the main body includes a pressurized chamber. The piston is moveable within the chamber of the main body in a plurality of partially open positions to vary the amount of medium flowing through the modulation orifice. The piston separates the pressurized chamber from the inlet port. The position sensor determines the position of the piston within the chamber of the main body, and the controller is in signal communication with the position sensor.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: November 20, 2018
    Assignee: Dayco IP Holdings, LLC
    Inventors: Brian M. Graichen, David E. Fletcher, James H. Miller, Keith Hampton
  • Patent number: D840920
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 19, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis
  • Patent number: D840921
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 19, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis
  • Patent number: D840922
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 19, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis
  • Patent number: D840923
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 19, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis
  • Patent number: D843315
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: March 19, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis
  • Patent number: D844550
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: April 2, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventors: David E. Fletcher, Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer, Andrew D. Niedert, Nicole Lavis