Patents by Inventor David Kwierant

David Kwierant 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).

  • Spindle nut assembly having multiple stop cams
    Patent number: 10421446
    Abstract: A spindle nut assembly for an electric parking brake has a spindle and a spindle nut. The spindle has a plurality of spindle stops and a plurality of external threads. The plurality of external threads has at least two threads. The spindle nut is operatively connected to the spindle, has a plurality of stop cams, and has a plurality of internal threads. At least one of the plurality of stop cams is engaged with at least one of the plurality of spindle stops when a first thread of the plurality of internal threads is started on any external thread of the plurality of external threads.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: September 24, 2019
    Assignees: Lucas Automotive GmbH, Kelsey-Hayes Company
    Inventors: Michael Schaefer, Christian Dilla, Manuel Barbosa, David Kwierant
  • Spindle Nut Assembly Having Multiple Stop Cams
    Publication number: 20170261053
    Abstract: A spindle nut assembly for an electric parking brake has a spindle and a spindle nut. The spindle has a plurality of spindle stops and a plurality of external threads. The plurality of external threads has at least two threads. The spindle nut is operatively connected to the spindle, has a plurality of stop cams, and has a plurality of internal threads. At least one of the plurality of stop cams is engaged with at least one of the plurality of spindle stops when a first thread of the plurality of internal threads is started on any external thread of the plurality of external threads.
    Type: Application
    Filed: March 10, 2016
    Publication date: September 14, 2017
    Applicants: Lucas Automotive GmbH, Kelsey-Hayes Company
    Inventors: Michael Schaefer, Christian Dilla, Manuel Barbosa, David Kwierant
  • Drum-in-hat disc brake assembly
    Patent number: 8556045
    Abstract: A drum-in-hat (DIH) disc brake assembly has a backing plate configured to be supported relative to an axle flange and to support a drum brake shoe assembly of the drum-in-hat parking and emergency brake; a caliper bracket configured to be supported relative to the axle flange and to support a disc brake caliper assembly of the disc service brake; and a parking brake anchor configured to be supported relative to the axle flange. The parking brake anchor includes an anchor body and an abutment. The anchor body has an opening formed therein which is configured to receive a lever arm of a parking and emergency brake actuator which extends through the opening in the anchor body.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: October 15, 2013
    Assignee: Kelsey-Hayes Company
    Inventors: Anthony Schmandt, Brian Boyle, David Kwierant, Harry Miller, Eduardo Morais
  • Drum-in-hat disc brake assembly
    Patent number: 8356701
    Abstract: A drum-in-hat (DIH) disc brake assembly has a disc service brake, a DIH parking and emergency brake, and a parking brake anchor. A backing plate, an axle flange, and a caliper bracket each have at least two mounting apertures formed therethrough. The parking brake anchor includes a bracket portion having a pair of studs extending axially outwardly therefrom. The studs are structured and configured to extend through the respective mounting apertures of the backing plate, the axle flange, and the caliper bracket for securing the caliper bracket, parking brake anchor, and the backing plate to the axle flange.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: January 22, 2013
    Assignee: Kelsey-Hayes Company
    Inventors: Anthony Schmandt, Brian Boyle, David Kwierant, Harry D. Miller, Eduardo Morais
  • Electric actuator unit for a vehicle brake assembly
    Patent number: 8011482
    Abstract: An improved structure for an electric actuator unit for use in a brake assembly.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: September 6, 2011
    Assignee: Kelsey-Hayes Company
    Inventors: Brian Boyle, David Kwierant, Ralf Leiter
  • DRUM-IN-HAT DISC BRAKE ASSEMBLY
    Publication number: 20090314593
    Abstract: A drum-in-hat (DIH) disc brake assembly has a disc service brake, a DIH parking and emergency brake, and a parking brake anchor. A backing plate, an axle flange, and a caliper bracket each have at least two mounting apertures formed therethrough. The parking brake anchor includes a bracket portion having a pair of studs extending axially outwardly therefrom. The studs are structured and configured to extend through the respective mounting apertures of the backing plate, the axle flange, and the caliper bracket for securing the caliper bracket, parking brake anchor, and the backing plate to the axle flange.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Inventors: Anthony Schmandt, Brian Boyle, David Kwierant, Harry D. Miller, Eduardo Morais
  • Electric Actuator Unit for a Vehicle Brake Assembly
    Publication number: 20090260929
    Abstract: An improved structure for an electric actuator unit for use in a brake assembly.
    Type: Application
    Filed: October 26, 2006
    Publication date: October 22, 2009
    Inventors: Brian Boyle, David Kwierant, Ralf Leiter