Patents Assigned to Harroun Enterprises
  • Spindle extension with self-contained pull-stud draw bar assembly
    Patent number: 5342155
    Abstract: A spindle extension, especially for drilling and milling operations is desirable to complete many modern die molds or to protect the host machine spindle from undesirable wear. The inventive spindle extension contains its own pull stud draw bar assembly that works in tandem with the host machine power draw bar that is easily activated to provide quick and secure tool changes. Surrogate and long-reach embodiments are disclosed.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: August 30, 1994
    Assignee: Harroun Enterprises
    Inventor: Hugh Harroun