Patents by Inventor Norman Weldon Read

Norman Weldon Read 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).

  • Seal means for valve assembly
    Patent number: 4066241
    Abstract: An indexing valve assembly utilizes a mandrel having elastomeric seal means retained by a seal housing containing a seal island over which is slidably located a slotted indexing sleeve.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: January 3, 1978
    Assignee: Dresser Industries, Inc.
    Inventor: Norman Weldon Read
  • Indexing valve mechanism
    Patent number: 4022426
    Abstract: An indexing valve assembly utilizes a mandrel having elastomeric seal means retained by a seal housing containing a seal island over which is slidably located a slotted indexing sleeve.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: May 10, 1977
    Assignee: Dresser Industries, Inc.
    Inventor: Norman Weldon Read
  • Sleeve valve mandrel and seal means for indexing valve assembly
    Patent number: 4022427
    Abstract: A two piece valve sleeve mandrel utilizes replaceable insert seal carriers having peripheral elastomeric sealing areas thereon which may be partially or fully pressure-balanced.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: May 10, 1977
    Assignee: Dresser Industries, Inc.
    Inventor: Norman Weldon Read