Patents by Inventor Douglas B. Gundel

Douglas B. Gundel 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).

  • Electrical characteristics of shielded electrical cables
    Patent number: 10109396
    Abstract: A shielded electrical cable includes one or more conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable. Each conductor set has one or more conductors having a size no greater than 24 AWG and each conductor set has an insertion loss of less than about ?20 dB/meter over a frequency range of 0 to 20 GHz. First and second shielding films are disposed on opposite sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: October 23, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • Electrical characteristics of shielded electrical cables
    Patent number: 10109397
    Abstract: A shielded electrical cable includes one or more conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable. Each conductor set has one or more conductors having a size no greater than 24 AWG and each conductor set has an insertion loss of less than about ?20 dB/meter over a frequency range of 0 to 20 GHz. First and second shielding films are disposed on opposite sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: October 23, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • Shielded electrical cable
    Patent number: 10090082
    Abstract: A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 2, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • Shielded electrical cable
    Patent number: 10080319
    Abstract: A shielded electrical cable includes a conductor set and two generally parallel shielding films disposed around the conductor set. The conductor set includes one or more substantially parallel longitudinal insulated conductors. The shielding films include a parallel portion wherein the shielding films are substantially parallel. The parallel portion is configured to electrically isolate the conductor set.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: September 18, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • High density shielded electrical cable and other shielded cables, systems, and methods
    Patent number: 10056170
    Abstract: A shielded cable includes adjacent first and second conductor sets, each conductor set includes a pair of insulated conductors. At least 90% of a periphery of each conductor set is encompassed by a shielding film. The cable also includes first and second non-conductive polymeric films disposed on opposite sides of the cable. The polymeric films include cover portions and pinched portions. In transverse cross section, the cover portions of the polymeric films in combination surround the conductor sets, and the pinched portions of the polymeric films in combination form pinched portions of the cable on each side of the cable. When the cable is laid flat, a center-to-center spacing of the pair of insulated conductors for the first conductor set is ?1 and a center-to-center spacing of the first and second conductor sets is ?. ?/?1 is less than 4.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: August 21, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas B. Gundel, Rocky D. Edwards, Mark M. Lettang, Charles F. Staley
  • SHIELDED ELECTRICAL CABLE
    Publication number: 20180146580
    Abstract: A shielded electrical cable includes a conductor set and two generally parallel shielding films disposed around the conductor set. The conductor set includes one or more substantially parallel longitudinal insulated conductors. The shielding films include a parallel portion wherein the shielding films are substantially parallel. The parallel portion is configured to electrically isolate the conductor set.
    Type: Application
    Filed: January 2, 2018
    Publication date: May 24, 2018
    Inventor: Douglas B. Gundel
  • EDGE INSULATION STRUCTURE FOR ELECTRICAL CABLE
    Publication number: 20180130573
    Abstract: An edge insulated electrical cable includes an electrical cable and an edge insulation structure applied to the electrical cable at the location. An apparatus for applying edge coating to a film is also disclosed.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 10, 2018
    Inventors: Douglas B. Gundel, Rocky D. Edwards, David L. Kordecki
  • EDGE INSULATION STRUCTURE FOR ELECTRICAL CABLE
    Publication number: 20180068762
    Abstract: A cable includes one or more conductor sets, one or more dielectric unitary blocks or reservoirs, first and second conductive shielding films disposed on opposite first and second sides of the conductor sets and the dielectric blocks or reservoirs, and an adhesive layer. The shielding films include cover portions and pinched portions arranged such that, in cross-section, the cover portions of the shielding films in combination substantially surround each conductor set and each unitary block or reservoir, and the pinched portions of the shielding films in combination form pinched portions of the cable on each side of the conductor set and on at least one side of the unitary block or the reservoir. The adhesive layer bonds the first shielding film to the second shielding film in the pinched portions of the cable.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Inventors: Douglas B. Gundel, Rocky D. Edwards
  • Edge insulation structure for electrical cable
    Patent number: 9899126
    Abstract: An electrical cable includes a conductor extending lengthwise along the cable, and a reservoir extending lengthwise along the cable at a first lateral location in the cable. The reservoir contains a dielectric material that is adapted to be transferred to a different second lateral location in the cable.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: February 20, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas B. Gundel, Rocky D. Edwards, David L. Kordecki
  • High density shielded electrical cable and other shielded cables, systems, and methods
    Patent number: 9892823
    Abstract: A shielded electrical ribbon cable includes a plurality of conductor sets. Each conductor set is surrounded by a shield and includes two insulated conductors. First and second non-conductive polymeric layers are disposed on opposite sides of the cable. The polymeric layers include cover portions and pinched portions. The cover portions surround the plurality of conductor sets, and the pinched portions form pinched portions on each side of the cable. The cable includes a transition portion on each side of the cable. At least one of the polymeric layers has a radius of curvature of at least 50 microns across an entire width of the cable. For at least one of the polymeric layers, the ratio of the minimum radius of curvature in the cover portions to the minimum radius of curvature in the transition portions is from 2 to 15.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: February 13, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas B. Gundel, Rocky D. Edwards, Mark M. Lettang, Charles F. Staley
  • Shielded electrical cable
    Patent number: 9883620
    Abstract: A shielded electrical cable includes a conductor set and two generally parallel shielding films disposed around the conductor set. The conductor set includes one or more substantially parallel longitudinal insulated conductors. The shielding films include a parallel portion wherein the shielding films are substantially parallel. The parallel portion is configured to electrically isolate the conductor set.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: January 30, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • HIGH SPEED TRANSMISSION CABLE
    Publication number: 20180025805
    Abstract: The present invention relates to a high speed transmission cable that includes a first conductor set, a dielectric film at least partially concentrically disposed around the first conductor set and a pinched portion forming an insulating envelope around the first conductor set. The dielectric film includes a base layer having a plurality of first protrusions formed on a first major surface of the base layer, wherein the dielectric film is disposed such that the base layer is partially concentric with the conductor set and wherein a portion of the first protrusions is disposed between the first conductor set and the base layer in a region where the base layer is concentric with the first conductor set.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 25, 2018
    Inventor: Douglas B. Gundel
  • Shielded electrical cable
    Patent number: 9865378
    Abstract: A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: January 9, 2018
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • RIBBED HIGH DENSITY ELECTRICAL CABLE
    Publication number: 20180005729
    Abstract: An electrical ribbon cable includes an insulated conductor extending along a longitudinal axis of the cable. The cable also includes a shielding film that carries the insulated conductor. The shielding film has a variable thickness defining a thickened rib portion and a thinned connecting portion, these portions being electrically conductive and extending along the longitudinal axis. The insulated conductor is disposed proximate the rib portion. The insulated conductor may be one of multiple insulated conductors that are organized into multiple conductor sets including at least a first and second conductor set, each conductor set including one or more of the insulated conductors, and the rib portion may be disposed between the first and second conductor sets.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 4, 2018
    Inventor: Douglas B. Gundel
  • Edge insulation structure for electrical cable
    Patent number: 9852828
    Abstract: A cable (2100) includes one or more conductor sets, one or more dielectric unitary blocks (2102) or reservoirs, first and second conductive shielding films (2108) disposed on opposite first and second sides of the conductor sets and the dielectric blocks (2102) or reservoirs, and an adhesive layer (2140). The shielding films (2108) include cover portions and pinched portions arranged such that, in cross-section, the cover portions of the shielding films in combination substantially surround each conductor set and each unitary block (2102) or reservoir, and the pinched portions of the shielding films in combination form pinched portions of the cable on each side of the conductor set and on at least one side of the unitary block (2102) or the reservoir. The adhesive layer (2140) bonds the first shielding film to the second shielding film in the pinched portions of the cable.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 26, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Douglas B. Gundel, Rocky D. Edwards
  • ELECTRICAL CHARACTERISTICS OF SHIELDED ELECTRICAL CABLES
    Publication number: 20170352450
    Abstract: A shielded electrical cable includes one or more conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable. Each conductor set has one or more conductors having a size no greater than 24 AWG and each conductor set has an insertion loss of less than about -20 dB/meter over a frequency range of 0 to 20 GHz. First and second shielding films are disposed on opposite sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor.
    Type: Application
    Filed: August 18, 2017
    Publication date: December 7, 2017
    Inventor: Douglas B. Gundel
  • Nested shielded ribbon cables
    Patent number: 9837189
    Abstract: The disclosure generally relates to nested shielded ribbon cables that form an electrical cable assembly. The electrical cable assembly includes features that can facilitate bending and movement of the cable.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 5, 2017
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel
  • DIELECTRIC COUPLING LENS USING DIELECTRIC RESONATORS OF HIGH PERMITTIVITY
    Publication number: 20170346190
    Abstract: Techniques are described for a lens containing high dielectric resonators. In one example, a lens comprises a substrate for propagating an electromagnetic wave and a plurality of resonators dispersed throughout the substrate. Each of the plurality of resonators has a diameter selected based at least in part on a wavelength of the electromagnetic wave and is formed of a dielectric material having a resonance frequency selected based at least in part on a frequency of the electromagnetic wave. Each of the plurality of resonators also has a relative permittivity that is greater than a relative permittivity of the substrate. At least two of the plurality of resonators are spaced within the substrate according to a lattice constant that defines a distance between a center of a first one of the resonators and a center of a neighboring second one of the resonators.
    Type: Application
    Filed: January 13, 2015
    Publication date: November 30, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jaewon Kim, Douglas B. Gundel, Ronald D. Jesme, Justin M. Johnson
  • Connector providing solderless contact
    Patent number: 9825389
    Abstract: Connectors providing solderless contact between conductors and a plurality of contact pads disposed on a substrate are disclosed. Connectors accommodating cables including pairs of insulated conductors are disclosed. Connector assemblies including frames for reversibly mounting the connectors with substrates having a plurality of contact pads are also disclosed.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: November 21, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Dennis L. Doye, Alexander W. Barr, Douglas B. Gundel, Charles F. Staley
  • High speed transmission cable
    Patent number: 9799425
    Abstract: The present invention relates to a high speed transmission cable that includes a first conductor set, a dielectric film at least partially concentrically disposed around the first conductor set and a pinched portion forming an insulating envelope around the first conductor set. The dielectric film includes a base layer having a plurality of first protrusions formed on a first major surface of the base layer, wherein the dielectric film is disposed such that the base layer is partially concentric with the conductor set and wherein a portion of the first protrusions is disposed between the first conductor set and the base layer in a region where the base layer is concentric with the first conductor set.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: October 24, 2017
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas B. Gundel