Patents by Inventor Bruce E. Peterson

Bruce E. Peterson 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).

  • Air shaft
    Patent number: 4254920
    Abstract: An expansible shaft including a hollow axially-extending body and operatively coupled core engaging and retracting sections within the body. The core engaging section includes a core engager movable relative to the body in a direction generally perpendicular to the axis of the body and biased towards a core engagement position in which it projects beyond the wall of the body; and the retracting section includes an actuator arranged to overcome the bias and move the core engager radially inwardly from its core engagement position.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: March 10, 1981
    Assignee: Double E Company, Inc.
    Inventor: Bruce E. Peterson
  • Core tools
    Patent number: 4155242
    Abstract: A tool for insertion into a core including a pair of pivotally connected levers having forwardly-extending jaws for insertion into the core and rearwardly-extending actuating portions to which the opposite ends of a flexible-wall fluid actuator are fixed for applying force to the actuating arms and pivotally expanding the jaws.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: May 22, 1979
    Assignee: Double E Company, Inc.
    Inventor: Bruce E. Peterson