Patents by Inventor David W. Holthaus

David W. Holthaus 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: 20210270374
    Abstract: A sealing comprises a seal portion and a plate portion fixed to the seal portion. The seal portion can have an undulating configuration of at least one peak and at least one valley, and the plate portion can circumferentially surround the seal portion. The seal portion can be made of a first material and the plate portion can be made of a second material more rigid than the first material. The seal portion can have a radially inward facing contact surface that defines a central opening of the sealing.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 2, 2021
    Applicant: Caterpillar Inc.
    Inventors: Anish MATHUR, Ryan P. MORGE, Gabriel Sbravatti FERREIRA, David W. HOLTHAUS, Mark J. KIESEL, Christopher A. MONROE
  • Patent number: 11040648
    Abstract: A dump body pivot pin, suspension node, and rear frame connection comprises a dump body pivot pin boss, a rear suspension connection boss, outer and inner upper rear frame tube connection bosses, outer and inner lower rear frame tube connection bosses, upper and lower beams, a beam connection web, and a support tube connection boss. The dump pivot pin boss has a pivot bore, a pin bore center axis, and inner and outer flat surfaces. The rear suspension connection boss includes a suspension connection center axis and inner and outer flat surfaces. The upper beam connects the outer and inner upper rear frame tube connection bosses to the dump body pivot pin boss. The lower beam connects the outer lower rear frame connection boss to the rear suspension connection boss and the dump body pivot pin boss and the inner lower rear frame tube connection boss to the dump body pivot pin boss.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: June 22, 2021
    Assignee: Caterpillar Inc.
    Inventors: Tad W Miller, David W Holthaus, Timothy D Harman, Venkara R Dantuluri
  • Publication number: 20210170863
    Abstract: A mounting system for mounting a tank to a space frame comprises a side mount configured to mount the tank to a center upper frame connection of the space frame, and a bottom mount configured to mount the tank to an elongate support member of the space frame. The bottom mount and the side mount are distinct mounts and configured to be mounted to the tank in a spaced apart relationship with respect to each other. The bottom mount and the side mount are coupled to a bottom and a rear side of the tank, respectively, and together are configured to mount the tank to the space frame.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 10, 2021
    Applicant: Caterpillar Inc.
    Inventors: Jared E Louis, Bruno L Risatti, David W. Holthaus
  • Publication number: 20210122284
    Abstract: A dump body pivot pin, suspension node, and rear frame connection comprises a dump body pivot pin boss, a rear suspension connection boss, outer and inner upper rear frame tube connection bosses, outer and inner lower rear frame tube connection bosses, upper and lower beams, a beam connection web, and a support tube connection boss. The dump pivot pin boss has a pivot bore, a pin bore center axis, and inner and outer flat surfaces. The rear suspension connection boss includes a suspension connection center axis and inner and outer flat surfaces. The upper beam connects the outer and inner upper rear frame tube connection bosses to the dump body pivot pin boss. The lower beam connects the outer lower rear frame connection boss to the rear suspension connection boss and the dump body pivot pin boss and the inner lower rear frame tube connection boss to the dump body pivot pin boss.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 29, 2021
    Applicant: Caterpillar Inc.
    Inventors: Tad W. Miller, David W. Holthaus, Timothy D. Harman, Venkara R. Dantuluri
  • Publication number: 20210122280
    Abstract: A support rocker configured to be pivotally coupled to a rocker attachment interface of a space frame comprises a rocker body having a pivot bore configured to receive therethrough a pivot pin to pivotally couple the rocker body to the rocker attachment interface; and a rocker support insert provided on a top portion of the rocker body. The rocker support insert can be removably coupled to the top portion of the rocker body, and the rocker support insert can define an upward-facing contact surface.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 29, 2021
    Applicant: Caterpillar Inc.
    Inventors: Ryan P. Morge, Pradeep Chapagain, David W. Holthaus
  • Publication number: 20210122430
    Abstract: A support arrangement for a haul truck comprises a space frame and a dump body operatively positioned on the space frame according to defined contact points. The space frame can include at least one rear support, at least one outer elongate support member, and at least one support rocker configured to pivot laterally about an axis. The dump body can include on a bottom thereof a rear pivot support and at least one flat contact surface, and on a front face thereof at least one vertical support structure. Each rear support of the space frame is configured to be pivotally coupled to the rear pivot support of the dump body. Each vertical support structure of the dump body is configured to be removably seated in a corresponding support rocker. Each flat contact surface is configured to be positioned adjacent to an outer lateral surface of an outer elongate support member.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 29, 2021
    Applicant: Caterpillar Inc.
    Inventors: David W. Holthaus, Andres Munoz-Najar
  • Publication number: 20100161246
    Abstract: A fault detection system for a fastener (224) in a machine (100) includes an ultrasonic sensor (404) that is integrated with the fastener and capable of emitting an ultrasonic signal (506) that travels through a length of the fastener (224). The ultrasonic sensor (404) receives a returning ultrasonic signal (506) and a processor (512) calculates a travel time between an emission of the ultrasonic signal (506) and a receipt of the returning ultrasonic signal (506). The processor (512) calculates an actual length (L) of the fastener (224) based on the travel time (510), compares the actual length (L) with a predetermined length of the fastener (224), and emits a wireless signal (519) to an electronic controller (612) of the machine (100) that is indicative of a structural state of the fastener (224).
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Applicant: Caterpillar Inc.
    Inventors: Mohit Verma, James W. Reinhart, Jon P. White, Christopher A. Pollum, Ricky J. Heller, David W. Holthaus