Patents by Inventor Earle R. Webster, Jr.

Earle R. Webster, Jr. 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).

  • Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
    Patent number: 6378847
    Abstract: A monolithic, fired ceramic gas diffuser for injecting gas into a molten metal bath, including a first portion, a second portion integrated with the first portion, and a bore passing through the first portion and communicating with the second portion for supplying gas to the second portion, wherein at least the second portion has a network of interconnected pores that provides preferential gas flow from the bore through the second portion to inject gas into the molten metal bath.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: April 30, 2002
    Inventors: Donald G. Rexford, David A. Larsen, Earle R. Webster, Jr.
  • Method of forming monolithic ceramic gas diffuser
    Patent number: 6322729
    Abstract: A method of forming a monolithic, fired ceramic gas diffuser for injecting gas into a molten metal bath includes the steps of: preparing first and second batch materials, depositing the batch materials into a mold to form different portions of the diffuser, and firing the casting to obtain the monolithic diffuser. Various embodiments of the method include vibrating the mold at least while the second batch material is deposited therein, partially freezing a first portion of the casting, and freezing the entire casting prior to firing.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 27, 2001
    Assignee: Blasch Precision Ceramics, Inc.
    Inventors: Donald G. Rexford, David A. Larsen, Earle R. Webster, Jr.
  • Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
    Patent number: 6199836
    Abstract: A monolithic, fired ceramic gas diffuser for injecting gas into a molten metal bath, including a first portion, a second portion integrated with the first portion, and a bore passing through the first portion and communicating with the second portion for supplying gas to the second portion, wherein at least the second portion has a network of interconnected pores that provides preferential gas flow from the bore through the second portion to inject gas into the molten metal bath.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: March 13, 2001
    Assignee: Blasch Precision Ceramics, Inc.
    Inventors: Donald G. Rexford, David A. Larsen, Earle R. Webster, Jr.