Patents by Inventor Randall Derek Riffle

Randall Derek Riffle 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).

  • Concrete slab load transfer apparatus and method of manufacturing same
    Patent number: 11434612
    Abstract: Various embodiments of the present disclosure provide a cast-in-place concrete slab load transfer apparatus and method of manufacturing same. In various embodiments, the concrete slab load transfer apparatus includes a plurality of load transfer dowels each having a top surface and a bottom surface, a basket supporting the load transfer dowels, and a plurality of welds including a plurality of breakable welds connecting the bottom surfaces of the load transfer dowels to the basket.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: September 6, 2022
    Assignee: Illinois Tool Works Inc.
    Inventors: Robert Alan Rodden, Zafar Imtiaz Ali, Matthew Douglas St. Louis, Randall Derek Riffle, Eddie Kao, Jimmy Lee Hall
  • SELF-DRILLING SELF-TAPPING FASTENER
    Publication number: 20220213919
    Abstract: A self-drilling self-tapping fastener that provides improved performance in both drilling time and pullout force without decreasing performance in any of ductility, tapping torque, torsional strength, and tension strength.
    Type: Application
    Filed: November 8, 2021
    Publication date: July 7, 2022
    Inventors: Yongping Gong, Randall Derek Riffle, Mark Latz, Alex Baciu
  • CONCRETE SLAB LOAD TRANSFER APPARATUS AND METHOD OF MANUFACTURING SAME
    Publication number: 20210054578
    Abstract: Various embodiments of the present disclosure provide a cast-in-place concrete slab load transfer apparatus and method of manufacturing same. In various embodiments, the concrete slab load transfer apparatus includes a plurality of load transfer dowels each having a top surface and a bottom surface, a basket supporting the load transfer dowels, and a plurality of welds including a plurality of breakable welds connecting the bottom surfaces of the load transfer dowels to the basket.
    Type: Application
    Filed: November 9, 2020
    Publication date: February 25, 2021
    Inventors: Robert Alan Rodden, Zafar Imtiaz Ali, Matthew Douglas St. Louis, Randall Derek Riffle, Eddie Kao, Jimmy Lee Hall
  • Concrete slab load transfer apparatus and method of manufacturing same
    Patent number: 10837144
    Abstract: Various embodiments of the present disclosure provide a cast-in-place concrete slab load transfer apparatus and method of manufacturing same. In various embodiments, the concrete slab load transfer apparatus includes a plurality of load transfer dowels each having a top surface and a bottom surface, a basket supporting the load transfer dowels, and a plurality of welds including a plurality of breakable welds connecting the bottom surfaces of the load transfer dowels to the basket.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: November 17, 2020
    Assignee: Illinois Tool Works Inc.
    Inventors: Robert Alan Rodden, Zafar Imtiaz Ali, Matthew Douglas St. Louis, Randall Derek Riffle, Eddie Kao, Jimmy Lee Hall
  • CONCRETE SLAB LOAD TRANSFER APPARATUS AND METHOD OF MANUFACTURING SAME
    Publication number: 20190276987
    Abstract: Various embodiments of the present disclosure provide a cast-in-place concrete slab load transfer apparatus and method of manufacturing same. In various embodiments, the concrete slab load transfer apparatus includes a plurality of load transfer dowels each having a top surface and a bottom surface, a basket supporting the load transfer dowels, and a plurality of welds including a plurality of breakable welds connecting the bottom surfaces of the load transfer dowels to the basket.
    Type: Application
    Filed: February 19, 2019
    Publication date: September 12, 2019
    Inventors: Robert Alan Rodden, Zafar Imtiaz Ali, Matthew Douglas St. Louis, Randall Derek Riffle, Eddie Kao, Jimmy Lee Hall