Patents by Inventor Edwin James Harris

Edwin James Harris 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).

  • Patent number: 7843308
    Abstract: A first voltage variable material (“VVM”) includes an insulative binder, first conductive particles with a core and a shell held in the insulating binder and second conductive particles without a shell held in the insulating binder; a second VVM includes an insulating binder, first conductive particles with a core and a shell held in the insulating binder, second conductive particles without a shell held in the insulating binder, and semiconductive particles with a core and a shell held in the insulating binder; a third VVM includes only first conductive particles with a core and a shell held in the insulating binder.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: November 30, 2010
    Assignee: Littlefuse, Inc.
    Inventors: Timothy Pachla, Edwin James Harris, Tushar Vyas
  • Patent number: 7609141
    Abstract: A first voltage variable material (“VVM”) includes an insulative binder, first conductive particles with a core and a shell held in the insulating binder and second conductive particles without a shell held in the insulating binder; a second VVM includes an insulating binder, first conductive particles with a core and a shell held in the insulating binder, second conductive particles without a shell held in the insulating binder, and semiconductive particles with a core and a shell held in the insulating binder; a third VVM includes only first conductive particles with a core and a shell held in the insulating binder.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: October 27, 2009
    Assignee: Littelfuse, Inc.
    Inventors: Edwin James Harris, Timothy Pachla, Tushar Vyas
  • Patent number: 7233474
    Abstract: An electrical protection device is provided. The device can be removably attached to or mounted inside of a power source, such as a vehicle, e.g., automobile, battery and can employ a replaceable fuse element. The device includes an overcurrent protection element, such as a fuse element, and provides any one or more of the following types of electrical protection: (i) overcurrent protection; (ii) accident or catastrophic event power cutout protection; and (iii) load dump protection. The system is configurable to protect certain vehicle electrical components from an overcurrent and allow others to operate independent of the overcurrent protection. Systems and methods employing the protection device are also illustrated and discussed.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 19, 2007
    Assignee: Littelfuse, Inc.
    Inventors: William P. Brown, Edwin James Harris, Jeffrey John Ribordy
  • Patent number: 7202770
    Abstract: The present invention provides overvoltage circuit protection. Specifically, the present invention provides a voltage variable material (“VVM”) that includes an insulative binder that is formulated to intrinsically adhere to conductive and nonconductive surfaces. The binder and thus the VVM is self-curable and may be applied to an application in the form of an ink, which dries in a final form for use. The binder eliminates the need to place the VVM in a separate device or for separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: April 10, 2007
    Assignee: Littelfuse, Inc.
    Inventors: Edwin James Harris, Scott Davidson, David Perry, Steven J. Whitney
  • Patent number: 7183891
    Abstract: A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM is self-curable and applicable in a spreadable form that dries before use. The binder eliminates the need to place the VVM in a separate device or to provide separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid FR-4 laminate, a polyimide, a polymer or a multilayer PCB via a process such as screen or stencil printing. In one embodiment, the VVM includes two types of conductive particles, one with a core and one without a core. The VVM can also have core-shell type semiconductive particles.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: February 27, 2007
    Assignee: Littelfuse, Inc.
    Inventors: Edwin James Harris, Tushar Vyas, Timothy Pachla, James A. Colby
  • Patent number: 7132922
    Abstract: A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM is self-curable and applicable in a spreadable form that dries before use. The binder eliminates the need to place the VVM in a separate device or to provide separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device. In one embodiment, the VVM includes doped semiconductive particles having a core, such which can be silicon, and an inert coating, which can be an oxide. The particles are mixed in the binder with conductive particles.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: November 7, 2006
    Assignee: Littelfuse, Inc.
    Inventors: Edwin James Harris, Tushar Vyas, Stephen J. Whitney
  • Publication number: 20040201941
    Abstract: A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM is self-curable and applicable in a spreadable form that dries before use. The binder eliminates the need to place the VVM in a separate device or to provide separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device. In one embodiment, the VVM includes doped semiconductive particles having a core, such which can be silicon, and an inert coating, which can be an oxide. The particles are mixed in the binder with conductive particles.
    Type: Application
    Filed: December 23, 2003
    Publication date: October 14, 2004
    Inventors: Edwin James Harris, Tushar Vyas, Stephen J. Whitney
  • Publication number: 20030218851
    Abstract: The present invention provides overvoltage circuit protection. Specifically, the present invention provides a voltage variable material (“VVM”) that includes an insulative binder that is formulated to intrinsically adhere to conductive and nonconductive surfaces. The binder and thus the VVM is self-curable and may be applied to an application in the form of an ink, which dries in a final form for use. The binder eliminates the need to place the VVM in a separate device or for separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device.
    Type: Application
    Filed: April 8, 2003
    Publication date: November 27, 2003
    Inventors: Edwin James Harris, Scott Davidson, David Perry, Stephen J. Whitney
  • Publication number: 20030071245
    Abstract: The present invention provides an improved voltage variable material (“VVM”). More specifically, the present invention provides an improved printed circuit board substrate, an improved device having circuit protection an improved data communications cable having circuit protection and a method for mass producing devices employing the VVM substrate of the present invention. The VVM substrate eliminates the need for an intermediate daughter or carrier board by impregnating conductive particles and possibly semiconductive and/or insulative particles associated with known volatage variable materials into the varnish or epoxy resin associated with known printed circuit board substrates.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 17, 2003
    Inventor: Edwin James Harris
  • Publication number: 20030013344
    Abstract: An apparatus and method for incorporating surface mount components into connectors. In an embodiment, an apparatus that houses a printed circuit board having a surface mount component is provided. The apparatus includes a body. A plurality of leads are fixed to the body so that an external electrical device is enabled to electrically communicate with the leads. A clip extends from each lead and receives an end of a printed circuit board.
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventor: Edwin James Harris