Patents by Inventor Thomas W. Kerkman

Thomas W. Kerkman 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).

  • Articulated tractor loader with side rear view mirrors
    Patent number: 4379568
    Abstract: An articulated tractor loader vehicle which has side rear view convex mirrors mounted to the back of headlight housings for providing a panoramic rear view of the lateral sides of the tractor loader vehicle rearwardly of the front rubber tired wheels and rearwardly of the rear rubber tired wheels.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: April 12, 1983
    Assignee: Dresser Industries, Inc.
    Inventor: Thomas W. Kerkman
  • Counterboard retaining cap for chamfered stub shaft
    Patent number: T103302
    Abstract: A sealed pivotal connection includes a bore member having a chamfered end stub shaft, a pivoting member journalled on the stub shaft and having inner and outer grease seals, and an end retainer cap attached to the stub shaft end having a recess receiving the entire chamfered end of the stub shaft to assure location of the outer grease seal on the cylindrical portion of the stub shaft.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: August 2, 1983
    Inventor: Thomas W. Kerkman