Patents by Inventor David F. Hickman

David F. Hickman 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).

  • Dielectric fitting
    Patent number: 11274779
    Abstract: A dielectric fitting includes a nut having inner threads and an axial compression surface, and a hole having a first diameter. A mating component includes outer threads that engage with the inner threads including a second axial compression surface. A first fitting includes a circumferential flange captured between the first axial compression surface and the second axial compression surface, the first fitting having a first wall that extends axially and passes through the first hole and includes first fitting threads. A second fitting includes second fitting threads that engage with the first fitting threads, the second fitting having a second wall and a bulge portion that radially projects to a second diameter and includes an O-ring. The nut and the mating component are dielectrically isolated from the first fitting and the second fitting, and the second diameter is larger than the first diameter.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: March 15, 2022
    Assignee: Legend Valve & Fitting, Inc.
    Inventor: David F. Hickman
  • DIELECTRIC FITTING
    Publication number: 20200271256
    Abstract: A dielectric fitting includes a nut having inner threads and an axial compression surface, and a hole having a first diameter. A mating component includes outer threads that engage with the inner threads including a second axial compression surface. A first fitting includes a circumferential flange captured between the first axial compression surface and the second axial compression surface, the first fitting having a first wall that extends axially and passes through the first hole and includes first fitting threads. A second fitting includes second fitting threads that engage with the first fitting threads, the second fitting having a second wall and a bulge portion that radially projects to a second diameter and includes an O-ring. The nut and the mating component are dielectrically isolated from the first fitting and the second fitting, and the second diameter is larger than the first diameter.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 27, 2020
    Inventor: David F. Hickman
  • Sillock and handle
    Patent number: D527797
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: September 5, 2006
    Inventor: David F. Hickman
  • Sillcock handle
    Patent number: D537147
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: February 20, 2007
    Assignee: Legend Valve & Fitting, Inc.
    Inventor: David F. Hickman