Patents by Inventor Erwin Kroulik

Erwin Kroulik 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: 11310948
    Abstract: A bus bar assembly is provided that includes an electrical conductor with a rectangular cross-section. A first insulation layer surrounds the electrical conductor. A shielding layer surrounds the first insulation layer. The shielding layer is formed from an embossed conductive foil wrapped around the first insulation layer with overlapping sections. A method of making the bus bar assembly is provided that includes an electrical conductor being surrounded with a first insulating layer. The first insulating layer is then wrapped with a shielding layer formed from a conductive foil wrapped around the first insulation layer.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 19, 2022
    Assignee: Flex-Cable
    Inventor: Erwin Kroulik
  • Publication number: 20200296867
    Abstract: A bus bar assembly is provided that includes an electrical conductor with a rectangular cross-section. A first insulation layer surrounds the electrical conductor. A shielding layer surrounds the first insulation layer. The shielding layer is formed from an embossed conductive foil wrapped around the first insulation layer with overlapping sections. A method of making the bus bar assembly is provided that includes an electrical conductor being surrounded with a first insulating layer. The first insulating layer is then wrapped with a shielding layer formed from a conductive foil wrapped around the first insulation layer.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 17, 2020
    Inventor: Erwin Kroulik
  • Patent number: 10460853
    Abstract: An electrical cable is provided with a rounded insulated electrical conductor that transitions to a flattened section to fit into areas where the rounded portion does not fit. A round electrical conductor transitions to a flattened section for electrical conduction routing via the undercarriage of a vehicle, for routing under the carpeting of the passenger compartment, or other confined spaces. The electrical cable may illustratively be used in an electric car application where distribution of electrical current from the battery compartment to the motor requires additional wiring in the vehicle not found in combustion based engines. The reduced vertical profile of the flattened section provides for additional clearance between the vehicle undercarriage and the road, or between the undercarriage frame and the interior passenger compartment carpet.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 29, 2019
    Assignee: Flex-Cable
    Inventors: Tim Jones, Robert W. Christie, Jan Christiansen, Erwin Kroulik
  • Patent number: 9865372
    Abstract: An electrical conductor is provided that includes at least one strip of conductive material defining a length and having a first end with a first cutout and a second end having a second cutout. The cutouts engage electrical terminals. The at least two deflections are orthogonal to the length of the strip. The deflections are located between the first cutout and the second cutout and are in plane or out of plane of the cutouts. The electrical conductor is particularly well suited for interconnection of batteries associated with a vehicle power system.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: January 9, 2018
    Assignee: FLEX-CABLE
    Inventors: Erwin Kroulik, Timothy J. Jones
  • Publication number: 20170345526
    Abstract: An electrical cable is provided with a rounded insulated electrical conductor that transitions to a flattened section to fit into areas where the rounded portion does not fit. A round electrical conductor transitions to a flattened section for electrical conduction routing via the undercarriage of a vehicle, for routing under the carpeting of the passenger compartment, or other confined spaces. The electrical cable may illustratively be used in an electric car application where distribution of electrical current from the battery compartment to the motor requires additional wiring in the vehicle not found in combustion based engines. The reduced vertical profile of the flattened section provides for additional clearance between the vehicle undercarriage and the road, or between the undercarriage frame and the interior passenger compartment carpet.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventors: TIM JONES, ROBERT W. CHRISTIE, JAN CHRISTIANSEN, ERWIN KROULIK
  • Publication number: 20170194071
    Abstract: An electrical conductor is provided that includes at least one strip of conductive material defining a length and having a first end with a first cutout and a second end having a second cutout. The cutouts engage electrical terminals. The at least two deflections are orthogonal to the length of the strip. The deflections are located between the first cutout and the second cutout and are in plane or out of plane of the cutouts. The electrical conductor is particularly well suited for interconnection of batteries associated with a vehicle power system.
    Type: Application
    Filed: February 6, 2015
    Publication date: July 6, 2017
    Inventors: Erwin Kroulik, Timothy J. Jones
  • Publication number: 20160233004
    Abstract: An electrical conductor is provided that includes at least one strip of conductive material defining a length and having a first end with a first cutout and a second end having a second cutout. The cutouts engage electrical terminals. The at least two deflections are orthogonal to the length of the strip. The deflections are located between the first cutout and the second cutout and are in plane or out of plane of the cutouts. The electrical conductor is particularly well suited for interconnection of batteries associated with a vehicle power system.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 11, 2016
    Inventors: Erwin Kroulik, Timothy J. Jones
  • Patent number: 9293240
    Abstract: An electrical transmission cable is provided with low inductance properties capable of carrying high current loads with a more uniform heating or loss profile. The low inductance properties of the cable lead to lower current losses resulting in a cooler and more efficient operation of the cable even at higher alternating current (AC) frequencies. Higher current loads are accommodated by a plurality of conductor bundles configured as braided wire strands that are separated and joined into like conductors prior to termination. Equal lengths of the insulated wire strands within the conductor bundles contribute to uniform heating along the length of the inventive cable embodiments. Uniform operating temperature is manifest as more uniform current transmission across the various strands of an inventive cable. In addition, the more equal weave position for all the wire strands making up each braided wire bundle tends to induce cancellation of inductive effects.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 22, 2016
    Assignee: FLEX-CABLE
    Inventor: Erwin Kroulik
  • Patent number: 8952565
    Abstract: An electrical conductor is provided that includes at least one strip of conductive material defining a length and having a first end with a first cutout and a second end having a second cutout. The cutouts engage electrical terminals. The at least two deflections are orthogonal to the length of the strip. The deflections are located between the first cutout and the second cutout and are in plane or out of plane of the cutouts. The electrical conductor is particularly well suited for interconnection of batteries associated with a vehicle power system.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: February 10, 2015
    Assignee: Flex-Cable
    Inventors: Erwin Kroulik, Timothy J. Jones
  • Publication number: 20140069718
    Abstract: An electrical transmission cable is provided with low inductance properties capable of carrying high current loads with a more uniform heating or loss profile. The low inductance properties of the cable lead to lower current losses resulting in a cooler and more efficient operation of the cable even at higher alternating current (AC) frequencies. Higher current loads are accommodated by a plurality of conductor bundles configured as braided wire strands that are separated and joined into like conductors prior to termination. Equal lengths of the insulated wire strands within the conductor bundles contribute to uniform heating along the length of the inventive cable embodiments. Uniform operating temperature is manifest as more uniform current transmission across the various strands of an inventive cable. In addition, the more equal weave position for all the wire strands making up each braided wire bundle tends to induce cancellation of inductive effects.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 13, 2014
    Applicant: FLEX-CABLE
    Inventor: Erwin Kroulik
  • Publication number: 20120112527
    Abstract: An electrical conductor is provided that includes at least one strip of conductive material defining a length and having a first end with a first cutout and a second end having a second cutout. The cutouts engage electrical terminals. The at least two deflections are orthogonal to the length of the strip. The deflections are located between the first cutout and the second cutout and are in plane or out of plane of the cutouts. The electrical conductor is particularly well suited for interconnection of batteries associated with a vehicle power system.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 10, 2012
    Applicant: Flex-Cable
    Inventors: Erwin Kroulik, Timothy J. Jones
  • Patent number: 7976333
    Abstract: A laminar electrical connector is provided that is formed from multiple superimposed strips of conductive material that form a stack having at least two ends. A second conductive material is used to join adjacent superimposed strips. The resultant connector has ends that are adapted to engage electrical terminals and provide an electrical communication therebetween. The resultant connector lacks a sheath on the ends or a grommet extending through the stack. Such a sheath or grommet limits the operative lifetime of the resulting connector and also creates current focusing that diminishes overall connector efficiency. A connector having a continuous layer of the second conductive material joining adjacent strips along the entire interface between the adjacent strips is also provided and improves connector performance in ways that are especially beneficial to applications associated with an electric vehicle or a hybrid vehicle.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: July 12, 2011
    Assignee: Flex-Cable
    Inventor: Erwin Kroulik
  • Publication number: 20110076861
    Abstract: A laminar electrical connector is provided that is formed from multiple superimposed strips of conductive material that form a stack having at least two ends. A second conductive material is used to join adjacent superimposed strips. The resultant connector has ends that are adapted to engage electrical terminals and provide an electrical communication therebetween. The resultant connector lacks a sheath on the ends or a grommet extending through the stack. Such a sheath or grommet limits the operative lifetime of the resulting connector and also creates current focusing that diminishes overall connector efficiency. A connector having a continuous layer of the second conductive material joining adjacent strips along the entire interface between the adjacent strips is also provided and improves connector performance in ways that are especially beneficial to applications associated with an electric vehicle or a hybrid vehicle.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventor: Erwin Kroulik
  • Patent number: 5780770
    Abstract: The invention is directed to a fluid cooled electrical conductor assembly. The fluid cooled electrical conductor assembly includes a terminal having an open end and a fluid passage in communication with the open end. A sleeve is at least partially received within the open end of the terminal. The sleeve is metallurgically bonded to the terminal, such as by solder. The sleeve has a flared end disposed around an electrical conductor and a distal end disposed adjacent to an end of the conductor. The sleeve has a longitudinally extending groove which is in communication with the fluid passage in the terminal. A casing is connected to the terminal and surrounds the conductor to thereby define a fluid passageway at a periphery of the conductor. During manufacture, a single sleeve is swedged onto an electrical conductor and subsequently cut in half to define two substantially identical sleeves which may be inserted into respective terminals.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: July 14, 1998
    Assignee: Flex-Cable, Inc.
    Inventors: Jan Christianson, Ed Walton, Erwin Kroulik