Patents by Inventor Robert C. Klingman

Robert C. Klingman 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).

  • Patent number: 4157199
    Abstract: Apparatus for grasping the exterior surface of a tubular member to facilitate removal thereof from within a well is characterized by a substantially hollow, elongated housing having first and second flapper members pivotally mounted within the housing for movement relative to the axis thereof from an open to a grasping position. In the grasping position the flapper members are disposed substantially perpendicularly to the interior surface of the housing. Each of the flappers is provided with a cutout portion which registers to define an opening therebetween, the opening between said flapper members having a dimension less than the outer diameter of a tubular member to be retrieved. The edges of the flapper members defining the opening are provided with means for graspingly engaging a tubular member.
    Type: Grant
    Filed: August 3, 1977
    Date of Patent: June 5, 1979
    Assignee: Wilson Industries
    Inventor: Robert C. Klingman