Patents by Inventor Cyril Lea

Cyril Lea 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).

  • Method of withdrawing elongate tubular members
    Patent number: 4161810
    Abstract: An elongated tubular member is withdrawn from a bore in a support member by ixing at a leading end of the tubular member a hollow adapter, inserting through the tubular member and the hollow adapter a rod having an overall length greater than the combined length of the tubular member and the adapter, securing said rod to the adapter at one end of the tubular member, securing a broach to the rod at the other end, pulling the tubular member by suitable gripping means to withdraw it from the bore and thereby drawing the broach through the bore to re-shape it.A suitable form of gripping means is also disclosed in the form of a hydraulically operated chuck.
    Type: Grant
    Filed: January 17, 1978
    Date of Patent: July 24, 1979
    Assignee: The Production Engineering Research Association of Great Britain
    Inventors: James H. Beard, Cyril Lea, Bernard W. Ludwig
  • Method of withdrawing elongate tubular members
    Patent number: 4106177
    Abstract: An elongated tubular member is withdrawn from a bore in a support member by fixing at a leading end of the tubular member a hollow adapter, inserting through the tubular member and the hollow adapter a rod having an overall length greater than the combined length of the tubular member and the adapter, securing said rod to the adapter at one end of the tubular member, securing a broach to the rod at the other end, pulling the tubular member by suitable gripping means to withdraw it from the bore and thereby drawing the broach through the bore to re-shape it.A suitable form of gripping means is also disclosed in the form of a hydraulically operated chuck.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: August 15, 1978
    Inventors: James Henry Beard, Cyril Lea, Bernard William Ludwig